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CAGE Code: 5DME2
ITAR Registration Code: M28889

- July 11th 2020 -
Call: 1 (800) 377-3244
We Are Open Monday to Friday 8 A.M. - 5 P.M. (Pacific Time)
E-mail your questions and requirements at:

*Please contact us for available stock.
Stock quantity of zero may be reflected as it is not implemented yet.

MF Series

High Performance with very good DC Bias Cores used.
Capable of handling very high DC bias current with minimal inductance roll off.
High Temperature Performance and build to meet Temperature Class H (180 deg C).
Through hole mount with pre-tinned leads that can be directly soldered to PCB
Normally our customer specify the specs ( size, inductance, current)
and we built to meet the specs.
Also available in MPP, Sendust/KoolMu cores.

MF Series High Temperature & High Current Power Inductors.
Through Hole Mounting Construction

  • Designed using high saturation and high temperature stability "Flux Cores" with distributed air-gap
  • Excellent electromagnetic shielding due to toroidal design
  • Designed for commercial, industrial and military application
  • Low cost designs with pre-tinned leads for PCB through hole mounting
  • Inductance values from 1.5 uH to 1000 uH
  • Current rating from 1.0 Amps to 100 Amps
  • Temperature Rating: -55 deg C to +180 Deg C
  • Potted version available for military application
  • Custom designs are available to meet your specific requirements


Click the button to see examples of our custom wound products. We wind anything to meet your needs.
Generic Outline drawing and Schematic
Click individual part numbers in the shopping cart below to download detailed Engineering Drawing in .PDF
Dimensions of "A x B x C" and "D x E x F" are referenced in the shopping cart below

1) No tooling or set up fees required for standard parts
2) FREE Samples available for large OEMs
3) Typical Delivery: 4 to 6 weeks


Outline Drawing and Schematic

Part Numbering


MF270 : Hi Flux Size
101M : 120 uH
10A : 10 Amps rating
H : Horizontal Mount
V : Vertical Mount

) The prices shown below are for low volume quantity. Please call 800-377-3244 or
email 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) "Inductance at 1 Khz" ( 2nd column from left in table below ) is the inductance measured at zero or very low DC bias current.
6) "Current Rating" ( 3rd column from left in table below ) is based on a 40 deg C temperature rise at an ambient temperature of 90 deg C. This is the DC bias current through the inductor that will cause the inductor will reach a max. temp. rise of 40 deg C. above ambient with NO AIR FLOW.
7) "Incremental Current for 20% inductance drop" ( 4th column from left in table below ) is the DC bias current that will cause the inductance to drop by 20% from the value shown in Inductance at 1 Khz. At this current, the temperature rise may be above the 40 deg C stated above, so forced air flow may be required.
8) The saturation current is at least 5 times the max current listed in 5) or 6) above, so instantaneous high current spikes can be tolerated by these inductors.

  Part Number Inductance Current Rating, I DCR Max, Ohms JW Miller/Bourns CrossRef Quantity
on hand
MF270-102M-3.0AH 1,000.00 uH 3.0A .250 2300HT-102-RC 4 $5.00
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MF270-681M-3.5AV 680.00 uH 3.5A .180   9 $5.00
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MF270-581M-4AV 580.00 uH 4.0A .150   15 $5.00
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MF270-471M-4.5AV 470.00 uH 4.5A .100   14 $5.00
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MF270-471M-4.5AH 470.00 uH 4.5A .100   30 $5.00
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MF270-391M-5AV 390.00 uH 5.0A .080   0 $5.00
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MF270-391M-5AH 390.00 uH 5.0A .080   7 $5.00
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MF270-331M-6AV 330.00 uH 6.0A .070   10 $5.00
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MF270-271M-6.8AV 270.00 uH 6.8A .058   7 $5.00
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MF270-221M-7AV 220.00 uH 7.0A .048   14 $5.00
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MF270-181M-9AV 180.00 uH 9.0A .035   0 $5.00
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MF270-151M-9AV 150.00 uH 9.0A .035   119 $5.00
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MF270-121M-10AV 120.00 uH 10.0A .023   30 $5.00
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MF270-121M-10AH 120.00 uH 10.0A .023   12 $5.00
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MF270-101M-10AV 100.00 uH 10.0A .023   20 $5.00
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MF270-820M-10AV 82.00 uH 10.0A .023   0 $5.00
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MF270-700M-20AH 70.00 uH 20.0A .008   0 $5.00
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MF270-700M-20AV 70.00 uH 20.0A .008   73 $5.00
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MF270-680M-10AV 68.00 uH 10.0A .020   0 $5.00
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MF270-580M-10AV 58.00 uH 10.0A .020   5 $5.00
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MF270-580M-10AH 58.00 uH 10.0A .020   0 $5.00
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MF270-470M-13AV 47.00 uH 13.0A .015   15 $5.00
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MF270-470M-13AH 47.00 uH 13.0A .015   0 $5.00
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MF270-330M-16AV 33.00 uH 16.0A .010   56 $5.00
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MF270-330M-16AH 33.00 uH 16.0A .010   8 $5.00
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MF270-270M-20AV 27.00 uH 20.0A .008   372 $5.00
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MF270-270M-20AH 27.00 uH 20.0A .008   18 $5.00
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MF270-110M-30AV 10.80 uH 30.0A .004   5 $5.75
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MF270-110M-30AH 10.80 uH 30.0A .004   48 $5.00
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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.

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

Any Comments, Suggestions or Questions? Contact us! Email:
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