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CAGE Code: 5DME2
ITAR Registration Code: M28889

- October 21st 2017 -
Call: 1 (800) 377-3244
We Are Open Monday-Friday 8 am - 5 pm PT
E-mail: sales@coilws.com


Audio Choke Amorphous Core

Car Stereo Audio Noise Filter Inductor

AC Series Inductors
For Car Audio Filter Inductor, Speaker Crossover Inductor, Noise Filters and Output Inductors.

The AC Series inductors from CWS, Coil Winding Specialist, Inc is designed for application requiring very high saturation flux density or voltage swing, very stable high inductance with some DC bias over a wide temperature range. Application includes removing ignition noise or alternator noise from the automotive stereo systems, speaker crossover filters, noise filters, in-line filters, output inductor and other differential mode choke.

Please click here for Notes on Speaker Crossover.

Special Features of the AC Series Inductors are:

  • Manufactured with high permeability and temperature stable iron-based amorphous ribbons cores
  • Saturation flux density of 1.6 Tesla or 16,000 gauss which is much higher than MPP, Sendust, High Flux or Iron Powder Cores. As a comparison, KoolMu (Sendust) Bmax is 10,000 Gauss, Iron Powder Bmax is 14,000 Guass and High Flux Bmax is 15,000 Gauss
  • Core permeability of 300 to 1200 and Coersivity of 4 Hc (A/M)
  • Low core loss at high frequency
  • Using gapless toriodal structure for minimum magnetic leakage
  • Stable inductance at DC bias. Please see DC Bias table in pdf data sheet associated with each part number below.
  • Curie temperature rating of 400 degree Celcius (750 deg F), no thermal aging, little inductivity drift over wide temperature.
Please Contact Us For Carrying Optional Vertical and Horizontal Versions of Products.


  Part Number Inductance Tolerance, (+/-) Current Rating, Amps DCR Max, mOhms Price  
  AC-402U-1A 4,000.00 uH 15% 1 500.0 $2.75
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  AC-142U-2A 1,400.00 uH 15% 2 148.0 $2.75
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  AC-501U-3A 500.00 uH 15% 3 65.0 $2.75
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  AC-271U-4A 270.00 uH 15% 4 35.0 $2.75
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  AC-201U-5A 200.00 uH 15% 5 45.0 $2.75
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  AC-650U-8A 65.00 uH 15% 8 10.0 $2.75
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  AC-400U-10A 40.00 uH 15% 10 6.3 $2.75
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  AC-180U-15A 18.00 uH 15% 15 3.0 $2.75
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  AC-100U-20A 10.00 uH 15% 20 1.8 $2.75
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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.


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)