---- July 20th 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.

72-40X (35 Amps Surface Mount)

72- 400 Series 50 Khz to 500 Khz Current Sense Transformer.
Low Profile, Surface Mount, High Turn Ratio

  • Surface Mount Current Sense Transformer
  • High Current application : primary rated to 35 Amps
  • Designed for switch mode power supply application
  • 500 Vrms primary to secondary for hi-pot
  • Frequency range of 50 Khz to 500 Khz
  • Turn Ratio from 30: 1 to 300: 1
  • Low Profile : 10mm height


Click the button to see examples of our custom wound products. We wind anything to meet your needs.
Outline drawings and Schematics
Industrial and Commercial
Bulk or Tape and Reel

1) No tooling or set up fees required for standard parts
2) Minimum order : 20 pieces. Samples available to large OEMs
3) Typical Delivery: 2 to 6 weeks



Please see pdf files for details.
See link below for some sample PDF files.



Part Numbering

72 - 400

72 : CWS current sense
400 - Types

) The prices shown below are for low volume quantity. Please call  800-377-3244 or
email sales@coilws.com for larger volume OEM pricing.
) Our large OEM pricing is extremely competitive. We will meet or beat any competitors prices with better deliveries
) 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) Stock qty shown can be shipped immediately. Subject to prior sales. High volume Production qty delivery lead is 4 to 6 weeks

Part Number Inductance Max
Turns Ratio
Max Primary
on hand
72-401 0.5mH 0.34 ohms 1:30 35 Amps 500 0 $5.00
Buy Now
72-402 1.3999mH 0.57 ohms 1:50 35 Amps 500 930 $5.00
Buy Now
72-403 2.7mH 0.80 ohms 1:70 35 Amps 500 12 $5.00
Buy Now
72-404 5.5999mH 1.50 ohms 1:100 35 Amps 500 364 $5.00
Buy Now
72-405 22mH 5.00 ohms 1:200 35 Amps 500 0 $5.00
Buy Now
72-406 50mH 12.00 ohms 1:300 35 Amps 500 15 $5.00
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)