The best power inductors depend on whether you need a broad assortment for prototyping, compact SMD parts for a board, or a coil with a specified current rating. I’d put the Minidodoca 242-piece kit first for general bench work because it spans 25 values from 1 µH to 100 mH. The Swpeet 140-piece CD54 kit is a more focused choice for SMD experiments, while the uxcell 5-piece 50 µH, 20 A toroidal set suits projects that call for a stated high-current part. The main tradeoffs are breadth versus a specific electrical rating, and through-hole versus surface-mount assembly. Read on for how each option fits different builds and what to check before choosing.
Get business pricing on garage and car supplies
- Business-only prices and quantity discounts
- Tax-exempt purchasing
- Multiple users, one account, clear invoices
Complete the kit
Key Takeaways
- Minidodoca leads for range: its 25 values from 1 µH to 100 mH make it a flexible starting assortment, though the listing details provided do not specify current ratings for each piece.
- Swpeet’s 140-piece CD54 set is the focused SMD pick: 14 values from 2.2 µH to 680 µH keep the assortment centered on compact surface-mount experiments.
- Rated toroidal coils serve a different purpose from mixed kits: uxcell’s 50 µH 20 A set and 100 µH 20 A single coil state a current rating, unlike the assorted-value kits described here.
- Assortment size does not settle suitability: kits with many values still need datasheet checks for saturation current, resistance, core type, and tolerance before use in a power stage.
- Package format narrows the choice quickly: radial and I-shape kits suit leaded prototyping, while CD54, CD43, and shielded SMD parts suit compact board layouts.
| Minidodoca 242-Piece Inductor Kit, 25 Values, 1 µH to 100 mH |  | Best for Broad Through-Hole Coverage | Quantity: 242 pieces | Number of values: 25 | Inductance range: 1 µH to 100 mH | VIEW LATEST PRICE | See Our Full Breakdown |
| Yetaida 130-Piece CD54 SMD Power Inductor Assortment Kit |  | Best for Temperature-Range Documentation | Quantity: 130 pieces | Inductance values: 2.2 µH, 3.3 µH, 4.7 µH, 6.8 µH, 10 µH, 22 µH, 33 µH, 47 µH, 100 µH, 220 µH, 330 µH, 470 µH, 680 µH | Type: CD54 SMD wire-wound power inductors | VIEW LATEST PRICE | See Our Full Breakdown |
| Swpeet 30-Piece Toroidal Inductor Assortment Kit, 6 Values |  | Best for Toroidal Power Experiments | Quantity: 30 pieces | Inductance values: 10 µH, 22 µH, 33 µH, 47 µH, 100 µH, 220 µH | Quantity per value: 5 pieces | VIEW LATEST PRICE | See Our Full Breakdown |
| 75-Piece I-Shape Power Inductor Kit, 15 Values, 2.2 µH–10 mH |  | Best for Compact Through-Hole Boards | Quantity: 75 pieces | Number of values: 15 | Quantity per value: 5 pieces | VIEW LATEST PRICE | See Our Full Breakdown |
| VANXY CD43 Wire-Wound SMD Power Inductor Assortment Kit, 200 Pieces, 20 Values |  | Best for Reflow-Soldered SMD Prototypes | Quantity: 200 pieces | Number of values: 20 | Quantity per value: 10 pieces | VIEW LATEST PRICE | See Our Full Breakdown |
| BOJACK 200-Piece Inductor Assortment Kit, 20 Values, 10 µH to 10 mH, 1 W |  | Best for Broad Through-Hole Prototyping | Quantity: 200 pieces | Number of values: 20 | Inductance range: 10 µH to 10 mH | VIEW LATEST PRICE | See Our Full Breakdown |
| 75-Piece 0912 I-Shape Power Inductor Kit, 15 Values |  | Best Compact Radial DIP Kit | Quantity: 75 pieces | Number of values: 15 | Inductance range: 2.2 µH to 1 mH | VIEW LATEST PRICE | See Our Full Breakdown |
| EGSCST 265-Piece Inductor Assortment Kit, 30 Values, 1 µH–100 mH, 6 × 8 mm |  | Best for the Widest Inductance Range | Quantity: 265 pieces | Number of values: 30 | Inductance range: 1 µH to 100 mH | VIEW LATEST PRICE | See Our Full Breakdown |
| uxcell 10-Piece 100 µH Toroidal Inductor Coils, 3 A |  | Best for a Defined 3 A Toroidal Replacement | Quantity: 10 coils | Inductance: 100 µH | Inner diameter: 5 mm | VIEW LATEST PRICE | See Our Full Breakdown |
| Swpeet 140-Piece CD54 SMD Power Inductor Assortment Kit, 14 Values from 2.2 µH to 680 µH |  | Best for RoHS-Compliant SMD Prototyping | Quantity: 140 pieces | Number of values: 14 | Inductance range: 2.2 µH to 680 µH | VIEW LATEST PRICE | See Our Full Breakdown |
| 20-Value Radial Inductor Kit, 1 µH to 10 mH, 160 Pieces |  | Best for Bench Prototyping | Quantity: 160 pieces | Number of values: 20 | Inductance range: 1 µH to 10 mH | VIEW LATEST PRICE | See Our Full Breakdown |
| uxcell 5-Piece 50 µH 20 A Toroidal Inductor Coils |  | Best for 50 µH High-Current Filtering | Quantity: 5 coils | Inductance: 50 µH | Overall size: 13 × 26 mm (thickness × diameter) | VIEW LATEST PRICE | See Our Full Breakdown |
| LIDUOLE 30-Value Inductor Assortment Kit, 136 Pieces |  | Best for Broad Through-Hole Selection | Brand: LIDUOLE | Quantity: 136 pieces | Number of values: 30 | VIEW LATEST PRICE | See Our Full Breakdown |
| uxcell 100uH 20A Toroidal Inductor Coil |  | Best Single-Coil Power Filter | Inductance: 100 µH | Overall size: 13 × 29 mm | Internal diameter: 7.7 mm | VIEW LATEST PRICE | See Our Full Breakdown |
| 10-Pack 15 µH Shielded SMD Power Inductors, 10 × 10 × 4 mm |  | Best Compact SMD Pick | Quantity: 10 | Inductance: 15 µH | Package size: 10 × 10 × 4 mm | VIEW LATEST PRICE | See Our Full Breakdown |
| power inductor | Quantity | Number of values | Inductance range |
|---|---|---|---|
| Minidodoca 242-Piece Inductor | 242 pieces | 25 | 1 µH to 100 mH |
| Yetaida 130-Piece CD54 SMD Pow | 130 pieces | — | — |
| Swpeet 30-Piece Toroidal Induc | 30 pieces | — | — |
| 75-Piece I-Shape Power Inducto | 75 pieces | 15 | 2.2 µH to 10 mH |
| VANXY CD43 Wire-Wound SMD Powe | 200 pieces | 20 | 1 µH to 2.2 mH |
| BOJACK 200-Piece Inductor Asso | 200 pieces | 20 | 10 µH to 10 mH |
| 75-Piece 0912 I-Shape Power In | 75 pieces | 15 | 2.2 µH to 1 mH |
| EGSCST 265-Piece Inductor Asso | 265 pieces | 30 | 1 µH to 100 mH |
| uxcell 10-Piece 100 µH Toroida | 10 coils | — | — |
| Swpeet 140-Piece CD54 SMD Powe | 140 pieces | 14 | 2.2 µH to 680 µH |
| 20-Value Radial Inductor Kit | 160 pieces | 20 | 1 µH to 10 mH |
| uxcell 5-Piece 50 µH 20 A Toro | 5 coils | — | — |
| LIDUOLE 30-Value Inductor Asso | 136 pieces | 30 | 1 µH to 100 mH |
| uxcell 100uH 20A Toroidal Indu | — | — | — |
| 10-Pack 15 µH Shielded SMD Pow | 10 | — | — |
More Details on Our Top Picks
Minidodoca 242-Piece Inductor Kit, 25 Values, 1 µH to 100 mH
The Minidodoca kit covers an unusually wide span, from 1 µH to 100 mH, with 25 values for through-hole experiments and repairs. Its individual compartments make the broad assortment easier to sort than the Swpeet toroidal kit, which has only six values. Copper conductors with PVC protection and listed current and DC resistance data give buyers useful selection details, though the supplied product information does not show the actual ratings. That gap matters when choosing parts for a power stage, where current capacity and resistance affect heat and losses. This is a practical bench assortment for trying different inductance values, but I would verify each part’s ratings before using one in a design with firm electrical limits.
Pros:- 25 values span 1 µH to 100 mH
- Individual compartments help keep values organized
- Through-hole leads suit breadboards and hand-soldered prototypes
- Current and DC resistance are specified for the inductors
Cons:- The provided data does not state the individual current or resistance ratings
- Radial through-hole parts are unsuitable for designs limited to SMD footprints
Best for: Through-hole hobbyists and repair technicians who want many inductance values available for prototyping.
Not ideal for: Designers who need confirmed current and resistance figures before choosing components for a power circuit.
- Quantity:242 pieces
- Number of values:25
- Inductance range:1 µH to 100 mH
- Mounting type:Through-hole
- Material:Copper conductors with PVC protection
- Dimensions:0.24 in W × 0.31 in H
- Storage:Individual compartments
Our verdict“Choose this kit for wide-ranging through-hole experiments, provided you can confirm the ratings for the specific parts you use.”
Yetaida 130-Piece CD54 SMD Power Inductor Assortment Kit
The Yetaida CD54 assortment is a focused choice for SMD boards, with 13 values from 2.2 µH to 680 µH and a stated operating range of -55°C to 105°C. That temperature information makes it easier to screen parts for environments where conditions matter, while the Minidodoca kit offers a wider range but uses through-hole components. Yetaida’s ferrite-core, wire-wound construction fits common converter and circuit-board work, and its labeled box keeps the values identifiable. The main limitation is the ±20% tolerance, which may be too broad where inductance must stay close to a target. Rated voltage also varies by model, so this kit suits general prototyping better than designs that need fully specified, interchangeable parts.
Pros:- 13 SMD values cover common power-inductor ranges
- Operating temperature is specified from -55°C to 105°C
- Labeled storage box helps identify parts
- Ferrite-core wire-wound construction suits board-level electronics
Cons:- ±20% tolerance may not suit circuits sensitive to inductance variation
- Rated voltage varies by model
- The value range tops out at 680 µH
Best for: SMD prototypers who need several common CD54 values and a stated operating-temperature range.
Not ideal for: Engineers whose converter designs require tight inductance tolerance or a single confirmed voltage rating across the assortment.
- Quantity:130 pieces
- Inductance values:2.2 µH, 3.3 µH, 4.7 µH, 6.8 µH, 10 µH, 22 µH, 33 µH, 47 µH, 100 µH, 220 µH, 330 µH, 470 µH, 680 µH
- Type:CD54 SMD wire-wound power inductors
- Core material:Ferrite
- Tolerance:±20%
- Operating temperature:-55°C to 105°C
- Package dimensions:4.45 × 3.54 × 1.06 in
- Storage:Labeled plastic box
Our verdict“Pick Yetaida for general CD54 prototyping when temperature data matters more than tight tolerance.”
Swpeet 30-Piece Toroidal Inductor Assortment Kit, 6 Values
For projects that call for toroidal coils, this Swpeet assortment supplies five pieces each in six values from 10 µH to 220 µH. The description gives current ratings from 1.25 A to 2.8 A, a useful starting point for power-supply and filter experiments. That makes it more targeted for current-conscious toroidal work than the Minidodoca kit, whose actual current figures are not included in the supplied details. The tradeoff is limited selection: 30 parts across six values cannot match Minidodoca’s 25-value span or the Yetaida kit’s 13 SMD values. Wire diameter also changes by value, and dimensions are incomplete, so buyers should check fit and electrical details for the intended circuit before ordering.
Pros:- Toroidal format suits relevant power and filter experiments
- Five pieces are included for each of six values
- Current ratings are stated as ranging from 1.25 A to 2.8 A
- Storage box is included
Cons:- Only six inductance values are included
- Some dimensions are incompletely specified
- The description provides no performance measurements
Best for: DIY builders experimenting with toroidal coils in power supplies, filters, or transformer projects.
Not ideal for: SMD board designers or anyone needing a broad selection of values and complete dimensional data.
- Quantity:30 pieces
- Inductance values:10 µH, 22 µH, 33 µH, 47 µH, 100 µH, 220 µH
- Quantity per value:5 pieces
- Wire diameter:0.6 mm (10, 22, 33 µH); 0.5 mm (47, 100 µH); 0.4 mm (220 µH)
- Outer diameter:12 mm
- Material:Copper wire
- Storage:Storage box
Our verdict“Choose Swpeet for small toroidal power experiments when its six values cover your circuit needs.”
75-Piece I-Shape Power Inductor Kit, 15 Values, 2.2 µH–10 mH
This kit’s 8 × 10 mm radial DIP format gives through-hole builders a compact option across 15 values, from 2.2 µH to 10 mH. Five pieces per value make it useful for repeated prototypes, while the Minidodoca assortment offers more pieces and a wider range for broader bench work. The I-shaped parts are described as suitable for hand soldering and automated assembly, so the format can carry from a prototype board into some production workflows. Its main drawback is missing electrical detail: the supplied information lists neither current ratings nor tolerance. That makes it harder to choose safely for a power stage than a part with clear ratings. I’d treat it as a footprint and value assortment, then confirm component limits before committing to a design.
Pros:- 15 values span 2.2 µH to 10 mH
- Five pieces per value support repeated prototypes
- Compact 8 × 10 mm radial package
- Suitable for hand soldering and automated assembly
Cons:- Current ratings are not provided in the supplied description
- Inductance tolerance is not specified
- Only 75 pieces are included
Best for: Through-hole PCB prototypers who want compact radial parts and several repeats of each value.
Not ideal for: Power designers who need stated current capacity or inductance tolerance to size components confidently.
- Quantity:75 pieces
- Number of values:15
- Quantity per value:5 pieces
- Inductance range:2.2 µH to 10 mH
- Dimensions:8 × 10 mm
- Package:Radial DIP, I-shaped
- Assembly:Hand soldering and automated assembly
Our verdict“This is a useful compact DIP assortment when footprint and value variety matter and you can verify ratings separately.”
VANXY CD43 Wire-Wound SMD Power Inductor Assortment Kit, 200 Pieces, 20 Values
The VANXY CD43 kit is aimed at compact SMD work: 200 wire-wound inductors cover 20 values from 1 µH to 2.2 mH, with ten parts at each value. Carrier tape supports reflow assembly, and the listed 4.5 × 4 × 3.2 mm size gives board builders a clear package reference. Compared with Yetaida’s CD54 assortment, VANXY offers more values and extends to a higher inductance, while Yetaida provides a stated temperature range and tolerance. VANXY’s listing instead leaves current capacity and tolerance unspecified, so buyers cannot judge power handling from the provided data alone. Its lead-free, RoHS-compliant construction suits electronics assembly, but circuit-critical designs still need fuller component specifications.
Pros:- 20 values span 1 µH to 2.2 mH
- 200 total pieces provide ten of each value
- Carrier tape supports reflow soldering
- Lead-free and RoHS-compliant
Cons:- Current capacity is not specified in the supplied details
- Tolerance and operating-temperature limits are not listed
- Ten pieces per value may be insufficient for larger production runs
Best for: SMD prototypers assembling boards by reflow who want many values in a compact CD43 package.
Not ideal for: Engineers who need documented current ratings, tolerance, or temperature limits to qualify parts for a design.
- Quantity:200 pieces
- Number of values:20
- Quantity per value:10 pieces
- Inductance range:1 µH to 2.2 mH
- Type:Wire-wound SMD power inductor
- Size:4.5 × 4 × 3.2 mm
- Packaging:Carrier tape
- Compliance:Lead-free, RoHS-compliant
Our verdict“Choose VANXY for varied reflow SMD prototypes when you can obtain the electrical ratings needed for your circuit.”
BOJACK 200-Piece Inductor Assortment Kit, 20 Values, 10 µH to 10 mH, 1 W
The BOJACK kit is a practical pick for through-hole prototypes that need several inductance options on hand: it supplies 20 values from 10 µH to 10 mH, with 10 pieces of each. That balanced quantity makes it more useful for repeated experiments than the EGSCST 265-piece kit, which covers more values but does not specify pieces per value here. BOJACK’s stated 1 W rating gives a basic power reference, though it does not replace the current and saturation data needed to qualify an inductor for a particular converter. Its 10% tolerance also makes it a weaker fit for circuits sensitive to inductance variation. The included case helps keep the assortment together, but buyers seeking compact SMD parts should choose a surface-mount kit instead.
Pros:- Covers 20 inductance values from 10 µH to 10 mH
- Provides 10 pieces of each value for repeat builds
- Includes a plastic storage case
- Lists a 1 W rating
Cons:- 10% inductance tolerance may not suit circuits sensitive to component variation
- No current or saturation rating is supplied in the product details
Best for: Hobbyists and electronics students building through-hole prototypes who want ten pieces each of common inductance values.
Not ideal for: Engineers selecting inductors for tightly controlled converters or compact SMD boards, because the tolerance is 10% and the supplied details do not specify current ratings.
- Quantity:200 pieces
- Number of values:20
- Inductance range:10 µH to 10 mH
- Pieces per value:10
- Inductance tolerance:10%
- Storage:Plastic case
- Model:BJ-IDT1W-200P
Our verdict“Choose BOJACK for a stocked through-hole workbench assortment with even quantities across 20 values, provided 10% tolerance fits your circuit.”
75-Piece 0912 I-Shape Power Inductor Kit, 15 Values
For PCB builders who need compact radial parts, this VANXY 0912 assortment offers a 9 × 12 mm I-shaped package and 15 inductance values from 2.2 µH to 1 mH. Its smaller stated package dimensions make it easier to place than the BOJACK kit, whose supplied details do not give component dimensions. The tradeoff is quantity: five pieces per value means less room for repeated assembly or failed prototypes than BOJACK’s ten. The kit is described for power supplies, filters, and DC-DC converters, but the product information omits current ratings and tolerances. Those gaps make it suitable for experimenting with footprints and circuit behavior, not for choosing a production power component by spec alone. Buyers who need a broader high-inductance range should also look at the EGSCST kit.
Pros:- 15 inductance values from 2.2 µH to 1 mH
- Compact 9 × 12 mm radial DIP package
- Five pieces of each value for small prototype runs
Cons:- Only five pieces per value, fewer than the BOJACK kit
- No current ratings or inductance tolerances are provided
Best for: PCB hobbyists prototyping radial power-supply or filter circuits who value a stated compact package and need a moderate range of values.
Not ideal for: Designers qualifying a converter for a defined load, because current capacity and inductance tolerance are not provided.
- Quantity:75 pieces
- Number of values:15
- Inductance range:2.2 µH to 1 mH
- Pieces per value:5
- Package:Radial DIP
- Dimensions:9 × 12 mm
- Manufacturer:VANXY
- Model:0912 15Values inductors
Our verdict“Pick this kit for compact radial PCB experiments, but use specified components when current capacity or tolerance must be known.”
EGSCST 265-Piece Inductor Assortment Kit, 30 Values, 1 µH–100 mH, 6 × 8 mm
The EGSCST set spans 30 values from 1 µH to 100 mH, giving experimenters a wider sweep than the BOJACK kit, which tops out at 10 mH. That range suits exploratory filter work and projects where the needed value is not settled yet. The 6 × 8 mm radial DIP format, guide pins, insulating sleeves, and storage case make the parts straightforward to organize and mount on a PCB. Its breadth comes with a selection caveat: the product details do not say how many pieces of each value are included, so buyers cannot plan repeated builds as confidently as with BOJACK’s ten-per-value assortment. Current and resistance ratings are also absent, and the sleeve material is described inconsistently as PVC or UL-rated tubing. Treat it as a prototyping assortment, not a fully specified power design kit.
Pros:- 30 inductance values spanning 1 µH to 100 mH
- Compact 6 × 8 mm radial DIP components
- Guide pins support PCB mounting and soldering
- Organized plastic case and insulating sleeves are included
Cons:- Current and resistance ratings are not specified
- Pieces per value are not stated
- Sleeve material may vary between PVC and UL-rated tubing
Best for: Experimenters and repair hobbyists who want a broad radial inductor range for trying multiple circuit values, including high-inductance options.
Not ideal for: Power-electronics designers who need confirmed current, resistance, sleeve material, or per-value quantities before committing to a build.
- Quantity:265 pieces
- Number of values:30
- Inductance range:1 µH to 100 mH
- Inductor size:6 × 8 mm
- Mounting type:Radial DIP
- Protection:PVC or UL-rated insulating sleeve
- Storage:Plastic case
- Brand:EGSCST
Our verdict“Choose EGSCST when testing a wide range of through-hole inductance values matters more than knowing exact per-value stock or electrical limits.”
uxcell 10-Piece 100 µH Toroidal Inductor Coils, 3 A
Unlike the mixed-value BOJACK assortment, this uxcell pack focuses on one clearly stated combination: 100 µH inductance and a 3 A rated current. That makes it easier to match when a design calls for this specific toroidal coil, and the ten-piece quantity supports replacements or a small batch of identical builds. Its 5 mm inner diameter may help with mounting or routing a conductor through the core, while the 0.5 mm wire diameter gives a useful physical reference. The narrow value selection is the main limitation; it cannot support the broad experiments covered by the EGSCST kit. Product details also omit core material, resistance, and operating conditions, so the 3 A figure alone is not enough to establish suitability for every power circuit.
Pros:- States both 100 µH inductance and a 3 A rated current
- Pack of 10 supports repeated builds or spares
- Compact 6.5 × 14.5 mm overall size
- 5 mm inner diameter and 0.5 mm wire diameter are specified
Cons:- All 10 coils have the same inductance, limiting experimentation
- Core material, resistance, and operating conditions are not detailed
Best for: Repair technicians and builders replacing or assembling several circuits that call for a 100 µH toroidal coil rated at 3 A.
Not ideal for: Designers exploring multiple inductance values or needing full core, resistance, and operating-condition data for component qualification.
- Quantity:10 coils
- Inductance:100 µH
- Inner diameter:5 mm
- Wire diameter:0.5 mm
- Overall size:6.5 × 14.5 mm (thickness × diameter)
Our verdict“Choose this uxcell set when you need several matching 100 µH, 3 A toroidal coils and can verify the remaining circuit requirements separately.”
Swpeet 140-Piece CD54 SMD Power Inductor Assortment Kit, 14 Values from 2.2 µH to 680 µH
The Swpeet CD54 kit is the surface-mount choice in this group, with 14 wire-wound values from 2.2 µH to 680 µH and ten parts at each value. Its RoHS-compliant, lead-free construction and stated operating range of −40°C to +125°C give board designers useful selection details that the VANXY 0912 radial kit does not provide. In return, Swpeet covers a narrower inductance span than through-hole assortments such as the EGSCST kit, and the listing omits individual dimensions, tolerance, and current ratings. That leaves important fit and power checks unresolved for a finished design. A labeled box helps sort values during bench work, though it does not compensate for the missing electrical limits.
Pros:- 14 CD54 wire-wound SMD values from 2.2 µH to 680 µH
- Ten pieces per value for repeated prototypes
- Lead-free and RoHS compliant
- Specified operating temperature range of −40°C to +125°C
Cons:- No current ratings or inductance tolerances are provided
- Individual inductor dimensions are not specified
- Its value range is narrower than the EGSCST through-hole assortment
Best for: Electronics builders prototyping compact SMD boards who need several common values and require lead-free, RoHS-compliant components.
Not ideal for: Engineers choosing inductors for a production converter or a tight PCB footprint, because current ratings, tolerances, and individual dimensions are not listed.
- Quantity:140 pieces
- Number of values:14
- Inductance range:2.2 µH to 680 µH
- Pieces per value:10
- Type:CD54 wire-wound SMD power inductor
- Operating temperature:−40°C to +125°C
- Compliance:Lead-free, RoHS compliant
- Packaging:Labeled plastic storage box
Our verdict“Choose Swpeet for organized, RoHS-compliant SMD prototyping across common values, and verify package dimensions and electrical limits before design-in.”
20-Value Radial Inductor Kit, 1 µH to 10 mH, 160 Pieces
Broad value coverage makes this radial kit a practical fit for engineers and hobbyists who need through-hole parts on hand while prototyping. It supplies 160 inductors across 20 values from 1 µH to 10 mH, with individual compartments that make it easier to find a value than in a loose mixed assortment. Compared with the LIDUOLE 30-Value Inductor Assortment Kit, this set has fewer values and a lower stated piece count, but its separate compartment doors offer a useful organizational detail. The stated 6 × 8 mm vertical format suits compact through-hole layouts, and PVC tubing protects the components in storage. The listed sequence includes an apparent 20 µH anomaly, and the provided data omits current and DC resistance ratings, so I would treat this as a prototyping assortment rather than a source for selecting a part for a demanding power stage.
Pros:- Covers 20 inductance values from 1 µH to 10 mH
- Individual compartments with separate doors help keep values organized
- PVC tubing protects the inductors in storage
- Vertical radial format fits through-hole prototyping
Cons:- Current and DC resistance ratings are not specified in the supplied details
- The listed 20 µH value appears inconsistent with the otherwise ascending sequence
- Through-hole parts are less suited to compact automated surface-mount assembly
Best for: Through-hole prototypers who want a compartmentalized selection of common inductance values for experiments and repairs
Not ideal for: Designers choosing parts for high-current converters, because current and DC resistance ratings are not provided
- Quantity:160 pieces
- Number of values:20
- Inductance range:1 µH to 10 mH
- Inductor type:Vertical radial
- Dimensions:6 × 8 mm
- Storage:Individual compartments with separate doors
- Protection:PVC tubing
Our verdict“Choose this kit for organized through-hole experiments across a useful inductance range, but verify the part ratings before using an inductor in a power stage.”
uxcell 5-Piece 50 µH 20 A Toroidal Inductor Coils
This five-coil set serves a different purpose from assortment kits: it gives a circuit builder five matching 50 µH toroidal coils with a stated 20 A rating. That makes it the more focused pick for a design needing repeated parts for power-output smoothing or noise suppression, while the uxcell 100uH Toroidal Inductor Coil offers twice the inductance as a single coil. The 50 µH value and 20 A rating are useful selection points, but they do not by themselves establish suitability for every circuit; the supplied details do not include DC resistance, core material, tolerance, or operating conditions behind the rating. Its 13 × 26 mm dimensions and 1 mm wire also require more board or enclosure space than the compact 10 × 10 × 4 mm SMD option. I would choose it when its specified value matches the design and the circuit can accommodate a toroidal form.
Pros:- Five coils share the same stated 50 µH inductance
- Rated current is specified as 20 A
- Toroidal format is intended for power smoothing and noise suppression
- 1 mm wire diameter is specified for evaluating physical fit
Cons:- DC resistance, tolerance, and core material are not specified in the supplied details
- The toroidal dimensions require more space than compact SMD inductors
- A fixed 50 µH value limits use when a circuit needs another inductance
Best for: Power-electronics builders who need several matching 50 µH toroidal coils for a circuit with a verified 20 A requirement
Not ideal for: PCB designers working with tight footprints or automated surface-mount assembly, since these are larger toroidal coils rather than SMD parts
- Quantity:5 coils
- Inductance:50 µH
- Overall size:13 × 26 mm (thickness × diameter)
- Internal diameter:8 mm
- Wire diameter:1 mm
- Net weight:152 g
Our verdict“Pick this set when a design calls for multiple 50 µH toroidal coils and its electrical and physical requirements match the supplied ratings.”
LIDUOLE 30-Value Inductor Assortment Kit, 136 Pieces
For buyers who need to explore a wide span of through-hole inductance values, the 30-value range from 1 µH to 100 mH is this kit’s main distinction. It reaches beyond the 10 mH upper limit of the 20-Value Radial Inductor Kit, despite containing fewer pieces overall. Labeled compartments in a transparent box help identify and return parts, while guide pins are intended to support stable soldering. Those features make it a useful parts drawer for repair work, learning circuits, and early prototypes where the required value is not yet settled. Its breadth does not make it a ready answer for power-stage selection: rated current and DC resistance are unspecified, so buyers cannot judge those limits from the provided data. The 6 × 8 mm vertical DIP radial format also suits through-hole boards better than dense surface-mount designs.
Pros:- Includes 30 inductance values across a 1 µH to 100 mH range
- 136 pieces provide multiple parts across the assortment
- Transparent box has labeled values for identification and organization
- Guide pins support stable soldering
Cons:- Rated current and DC resistance are not specified
- Vertical DIP radial components do not suit compact SMD assembly
- Fewer total pieces than the 160-piece radial kit
Best for: Through-hole hobbyists and repair technicians who want many inductance values, including values up to 100 mH, in one labeled kit
Not ideal for: Power converter designers who need documented current capacity and DC resistance before choosing a component
- Brand:LIDUOLE
- Quantity:136 pieces
- Number of values:30
- Inductance range:1 µH to 100 mH
- Size:6 × 8 mm
- Material:Copper coil with PVC insulation
- Design:Vertical DIP radial with guide pins
- Storage:Transparent storage box with labeled values
Our verdict“Choose this assortment when value range and labeled through-hole storage matter more than documented power ratings or maximum piece count.”
uxcell 100uH 20A Toroidal Inductor Coil
This single-coil option is aimed at a buyer who already knows the circuit calls for 100 µH and a stated 20 A rating. Its toroidal core is described as intended to limit magnetic leakage, making the coil a targeted candidate for power-output smoothing or noise suppression in power and signal lines. Compared with the uxcell 5-Piece 50 µH Toroidal Inductor Coils, it supplies twice the inductance but only one coil, so it fits a one-off repair or design position better than a build needing several matching parts. Its 13 × 29 mm body and 0.8 mm wire diameter give useful fit information, though they also make board space a factor. The supplied data does not state DC resistance, tolerance, or the conditions for its current rating, so this is a spec-specific component, not a general-purpose assortment.
Pros:- Specified 100 µH inductance for targeted circuit matching
- Stated 20 A rated current
- Toroidal magnetic core is intended to provide low magnetic leakage
- Overall and internal dimensions are provided for fit checks
Cons:- Only one coil is included
- DC resistance, tolerance, and current-rating conditions are not specified
- Its 13 × 29 mm size may be difficult to fit on a space-constrained board
Best for: Repair technicians and power-electronics builders replacing or selecting one toroidal coil for a design that specifies 100 µH
Not ideal for: Buyers assembling multiple prototypes or exploring values, since the package contains only one fixed-value coil
- Inductance:100 µH
- Overall size:13 × 29 mm
- Internal diameter:7.7 mm
- Wire diameter:0.8 mm
- Net weight:46 g
- Package content:1 inductor coil
Our verdict“Select this coil for a circuit that specifically calls for 100 µH in a toroidal format, after confirming its full electrical ratings against the design.”
10-Pack 15 µH Shielded SMD Power Inductors, 10 × 10 × 4 mm
Among these five options, this is the clear choice for a compact surface-mount board: its 10 × 10 × 4 mm molded package is far smaller and easier to place in an automated assembly flow than the radial and toroidal coils. The integrated shielding is designed to reduce electromagnetic interference, which can help when a converter shares a board with noise-sensitive circuitry. A ten-piece pack also gives a builder matching components for a small run, unlike the single uxcell 100uH Toroidal Inductor Coil. The tradeoff is limited electrical detail: only the 15 µH value and package information are supplied, with no current rating or tolerance. That leaves an important selection gap for a power inductor, since a compact footprint alone cannot show whether it can handle the circuit’s load. I’d shortlist it for layout fit, then confirm the full part data before committing.
Pros:- Compact 10 × 10 × 4 mm package suits space-constrained boards
- Integrated shielding is designed to reduce electromagnetic interference
- Surface-mount format supports automated PCB assembly
- Ten matching inductors support small builds and replacements
Cons:- Current rating and inductance tolerance are not specified
- No measured performance data is supplied
- Fixed 15 µH value is unsuitable when the design requires another inductance
Best for: PCB designers building compact converter boards who need shielded surface-mount 15 µH parts and can verify ratings from the component source
Not ideal for: Buyers who need a documented current rating and tolerance in the supplied listing, or who need through-hole leads
- Quantity:10
- Inductance:15 µH
- Package size:10 × 10 × 4 mm
- Package type:1040
- Mounting type:Surface mount
- Construction:Molded, integrated shielded
Our verdict“Consider this pack for compact shielded SMD layouts when 15 µH fits the design and the missing current and tolerance data can be confirmed.”
How We Picked
I compared the 15 listings by the details available to a buyer: inductance range, number of values and pieces, package style, stated current or power rating, and whether the assortment is aimed at broad prototyping or a defined application. Those details affect how quickly a part can be matched to a circuit and how much follow-up identification a buyer may need. I gave more weight to a stated application-relevant rating when the use case calls for it, while treating broad assortments as convenient for exploration rather than as proof of power-stage capability.
The ranking reflects distinct roles, not a claim that one format works for every circuit. Minidodoca is the broad general-purpose pick; Swpeet’s CD54 assortment represents focused SMD coverage; and uxcell’s rated toroidal coils are the targeted option for buyers who already know their inductance and current needs. Where the supplied product details omit electrical specifications, I keep the recommendation limited and call out the need to verify the manufacturer’s datasheet before purchase or installation.
Factors to Consider When Choosing Best Power Inductors
Before selecting a power inductor, start with the circuit requirements and board constraints, then use assortment size and convenience as tie-breakers. The following checks help prevent a common mistake: choosing a part because its inductance value matches while overlooking the properties that determine whether it will work in the actual design.
Match Inductance to the Circuit, Not the Kit Range
Inductance is only one input to a converter or filter design, and a kit’s advertised range does not show which values your circuit needs most. Check the design equations or reference design for the target value and its tolerance, then account for how the inductance may change with current and temperature. A wide assortment such as Minidodoca’s can help when you are prototyping several circuits, but its breadth does not replace a calculated value. For a defined repair or build, a smaller focused assortment may leave you with fewer unused parts. Avoid substituting a nearby value without checking the effect on ripple, transient response, and stability. Keep a record of the tested part value so a successful prototype can be reproduced with a documented component.
Check Saturation Current and Heating
For power circuits, the saturation current and thermal current rating can matter more than the nominal inductance printed on a listing. Saturation current describes when the core begins to lose inductance under load, while heating depends on winding resistance, frequency, airflow, and PCB copper. A stated 20 A rating is a useful starting point, but buyers should confirm the rating conditions and the corresponding temperature rise in the datasheet. Do not assume that every coil in an assortment can handle the same load simply because the kit is described as a power inductor set. Leave margin for startup surges and ripple current, especially in switching supplies. If the listing lacks current and temperature data, treat that part as a prototyping candidate until you can verify its limits.
Choose the Package for Your Assembly Method
Through-hole radial and I-shape parts are easy to swap on prototyping boards and can be practical for hand assembly. Surface-mount CD54 and CD43 packages take less board area, but they require suitable pads and soldering tools; their size also affects heat removal. Toroidal coils can offer a useful form for particular power designs, yet physical dimensions, lead arrangement, and mounting clearance need to fit the enclosure and PCB. Before ordering, compare the actual package drawing with your board footprint rather than relying on a family label alone. A package mismatch can turn a nominally correct electrical part into a difficult assembly. For early experiments, select the format that makes measurement and replacement straightforward.
Treat Shielding and EMI as Design Choices
Shielded inductors can help limit stray magnetic fields and reduce coupling into nearby traces or sensitive components. That can matter in dense layouts, audio paths, radios, and switching converters packed near signal circuitry. Shielding does not by itself guarantee low noise: switching frequency, layout, current loops, and the inductor’s construction all contribute. An unshielded toroid or leaded part may suit an open prototype, while a shielded SMD option can be easier to place near other components on a compact board. Compare the manufacturer’s EMI and electrical data when noise is a design constraint. Do not choose by the word “shielded” alone if the dimensions or ratings do not match the circuit.
Balance Assortment Breadth Against Traceability
Mixed-value kits make it easier to explore alternatives without placing repeated orders, which is useful for teaching, repair benches, and early prototypes. Their tradeoff is that individual parts may have less complete documentation or less consistent sourcing than a specified component from a manufacturer. When a circuit moves beyond experimentation, record the exact part number, supplier, tolerance, and relevant ratings for the selected inductor. Check whether values and piece counts are clearly labeled and whether the parts can be identified after they leave their packaging. Paying more attention to traceability can save time during maintenance and future production. For a one-off experiment, breadth may matter most; for a repeatable design, documentation deserves greater weight.
Read the Datasheet Before Committing the Board
Confirm the complete part number and datasheet before locking in a footprint or ordering parts for a finished design. Useful details include saturation current, RMS current, DC resistance, tolerance, core material, self-resonant frequency, and operating temperature. Listings often present a nominal inductance and package size without enough information to compare those limits across products. If a datasheet is unavailable, ask whether the seller can provide one or choose a documented component for a design where performance matters. Also check measurement conditions, since different test frequencies can affect quoted inductance. This step is especially valuable when replacing an existing part, because matching only the inductance can change losses, noise, and circuit behavior.
Frequently Asked Questions
Should I buy a mixed inductor kit or a single rated coil?
Choose a mixed kit when you are learning, repairing varied equipment, or prototyping circuits whose final values are not settled. Choose a single rated coil when the design already specifies its inductance, current needs, and physical form. The assortment saves time across multiple experiments, but it may not give you enough documentation to approve a part for a finished power supply. A rated coil narrows the choice, though you still need to check how the rating was measured. For production or a critical repair, use the exact documented part or a qualified equivalent.
Is a 20 A rating enough to choose the uxcell toroidal coils?
It is a useful screening detail, but it does not establish that the coil fits every 20 A application. Check the datasheet for saturation current, RMS current, winding resistance, temperature rise, and the conditions behind the stated rating. The circuit’s ripple current and startup behavior can raise stress above its steady average current. Also verify inductance, dimensions, mounting, and operating temperature against the design. If those supporting specifications are unavailable, do not treat the headline current figure as a complete design approval.
Can I use a CD54 or CD43 SMD inductor in place of a radial part?
Only when its electrical ratings and physical footprint suit the circuit. Package labels describe a form factor, not guaranteed equivalence in inductance behavior, current capability, resistance, or shielding. Surface-mount parts can save board space, while radial parts may be easier to replace on a hand-built prototype. Check the PCB pads, height clearance, and soldering method as well as the datasheet. If the circuit is already designed around a particular inductor, compare all relevant specifications before substituting.
Which assortment makes sense for a beginner learning inductors?
A broad, clearly organized assortment can help a beginner compare values across simple circuits, and Minidodoca’s 25-value range offers a wide spread for that kind of exploration. A radial or I-shape kit may be easier to handle on a breadboard than a small SMD set. Beginners should still use a meter or LCR meter where available and label parts after sorting them. Avoid applying substantial current until you know the part’s ratings. A kit supports learning, but it should not be treated as a set of interchangeable high-power components.
What should I do if a listing does not provide a datasheet?
First, look for the exact manufacturer part number and package drawing, since a seller title may omit the information needed to identify the component. Ask the seller for the datasheet or written electrical limits if they are not available. For experiments where failure has little consequence, you can characterize an unknown part at low energy and monitor inductance and heating, but that does not establish long-term reliability. For a finished converter, safety-related equipment, or a repeatable product, select a component with traceable documentation. Do not infer current capability from size or inductance alone.
Conclusion
For a flexible starting point, I recommend the Minidodoca 242-piece kit as the best overall choice because its 25 values cover a broad range of prototyping needs. The best value in practical coverage is the Swpeet 140-piece CD54 assortment for buyers who specifically need a spread of SMD values; it is not a substitute for a rated power component. Beginners can start with a broad radial or leaded assortment and learn to match values before moving to a documented part. For a premium-style choice among these listings, the uxcell 5-piece 50 µH 20 A toroidal set is the more targeted option when its stated rating and form suit the design, subject to datasheet verification. For compact boards, consider the CD54, CD43, or shielded SMD options; for a known high-current requirement, compare the uxcell toroidal coils against the full circuit specifications before choosing.
Fall Picks
fall essentials
As an affiliate, we earn on qualifying purchases.
