---- June 16th 2024 ----

CAGE Code: 5DME2
ITAR Registration Code: M28889
Call: 1 (800) 377-3244
Monday to Friday 8 A.M. - 5 P.M. (Pacific Time)
E-mail questions and requirements to: sales@coilws.com

Pricing is subject to change depending on product availability and backorders.
*Please Note: Items without price are listed for CWS' capability purposes.

Ferrite Based

Planar Output Inductor using gapped low loss power ferrite core
Capable of handling very high DC bias current with low inductance roll off.
Helical Wound Bobbinless Surface Mount.
Co-planar SMT pre-tinned leads for directly soldered to PCB
Available as bulk packaging or in tape and reel packaging

Inductance ranges: 0.9 uH, 1.0 uH and 2 uH
DC Current Rating: 70 Amps and 50 Amps

Custom designs for other inductances and current rating available. Please contact us.

CWS-3XXXX Series : 20Amps to 70 Amps High Current
Surface Mount Power Inductors - Planar Output Choke - Planar Inductor.

Low Cost, Helical Winding, Gapped Ferrite Construction

  • Low Cost Planar Output Choke or Planar Inductor
  • Gapped PQ20 and RM10 power ferrite for low loss
  • Designed for commercial, industrial and military application
  • Operating temperature range: -55 deg C to +110 deg C
  • Storage temperature range: -60 deg C to +125 deg C
  • Inductance values : 0.4 uH to 4.5 uH
  • Current rating : 70A, 60A, 50A, 35A, 25A, 20A
  • DC Resistance: As low as 0.6 milli-ohms
  • Hi-Pot: 300 Vrms, helix winding to core
  • Dimension: PQ20 Types 0.82" x 0.87" max. Ht: 0.225" to 0.28"
    RM10 Types: 1.10" x 1.05" max. Ht: 0.28" to 0.36"
  • Surface Mount Leads: See PDF drawings

1 ) The prices shown below are for low volume quantity. Please call 800-377-3244 or
email sales@coilws.com for larger volume OEM pricing.
2 ) Our large OEM pricing is extremely competitive. Very high volume pricing is under $1 each, tape and reel packaging. We will meet or beat any competitors prices with better deliveries
3 ) Custom designs are available to meet any of your requirements. Please contact us
) The data shown below can be sorted by clicking each column header.Click once again to sort in reverse order.
5) Rated current is based on a 40 deg C temp rise above the ambient, up to a max component temp of 110 deg C. Ferrite curie temp is over 200 deg C and wire insulation is rated at 200 deg C.
6) Theta JA, Theta JC, Rja and Rjb used in simulation softwares are only applicable for active devices, such as integrated circuits, etc. Inductors such as this CWS series do not use any semiconductor material and do not have same potential failure modes. The junction temperature gradient in CWS inductors are almost zero since it is a continuous copper wires.

Part Number Inductance Current Rating DCR Max Core Type Dimensions,
Leads length,
3D Model Quantity
on hand
CWS-38366 7.5uH 40 Amps 1.45 milli ohms RM10 1.10 x 1.17 0.41 max 0.16 3D STEP 280
Buy Now
CWS-32020 REV.H 6uH 45 Amps 1.50 milli ohms PQ3220 1.35 x 1.20 0.75 max 0.25   0 $8.00
Buy Now
CWS-38365 5.5uH 50 Amps 1.45 milli ohms RM10 1.10 x 1.17 0.41 max 0.16 3D STEP 0 $11.00
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CWS-39764 4.4uH 20 Amps 2.50 milli ohms PQ20 0.90 x 0.85 0.28 max 0.13 3D STEP 539 $7.00
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CWS-39677 3.6uH 60 Amps 1.55 milli ohms RM10 1.14 x 1.12 0.39 max 0.34 3D STEP 850 $9.00
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CWS-39678 3.6uH 60 Amps 1.55 milli ohms RM10 1.14 x 1.12 0.39 max 0.23   1 $7.00
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CWS-39079 2.2uH 25 Amps 2.30 milli ohms PQ20 0.87 x 0.84 0.29 max 0.13 3D STEP 48 $10.00
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CWS-39206 2.1uH 50 Amps 1.20 milli ohms RM10 1.10 x 1.05 0.28 max 0.16   1 $7.00
Buy Now
CWS-38182 1.25uH 40 Amps 1.30 milli ohms PQ20 0.87 x 0.84 0.29 max 0.13   0 $7.00
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CWS-37819 1uH 40 Amps 1.00 milli ohms PQ20 0.87 x 0.82 0.23 max 0.13 3D STEP 181
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CWS-12974 1uH 75 Amps 0.90 milli ohms   1.00 x 1.12 0.35 MAX 0.18   9 $7.00
Buy Now
CWS-35067 0.6uH 70 Amps 0.70 milli ohms PQ20 0.90 x 0.84 0.28 max 0.13 3D STEP 664 $7.00
Buy Now
CWS-39536 0.4uH 70 Amps 0.70 milli ohms PQ20 0.87 x 0.84 0.28 max 0.13   36 $7.00
Buy Now

Disclaimer: Coil Winding Specialist, Inc., its affiliates, agents, and employees acting on behalf of Coil Winding Specialist, Inc. (collectively, CWS) disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. CWS reserves the right at any time and from time to time to make changes to design, technical specification, or construction of any product listed on this website without notice. CWS also reserves the right to discontinue or limit sale of any product or service available throughout this website on temporary or permanently basis without notice. CWS highly recommends customers not to use its products offered on this website for inappropriate use and applications. Products should be tested for its suitability by prospective customers in all possible applications and conditions. Customers using or selling CWS products for use in other than recommended applications do so entirely at their own risk and agree to fully indemnify CWS from any damages arising or resulting from such use or sale.

WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go towww.P65Warnings.ca.gov.

Any Comments, Suggestions or Questions? Contact us!
Email: sales@coilws.com
CWS 353 West Grove Ave. Orange, California 92865
Call us Toll Free: 1-800-679-3184 or 1 (800) 377-3244

Tel: (714) 279-9010, Fax: (714) 279-9482

Copyright 2008, Coil Winding Specialist, Inc
Updated July, 2013

CAGE Code: 5DME2(Registered with www.ccr.gov)