HF 270 Series

Distributed Air Gap. High Flux Cores used.
Capable of handling very high DC bias current with minimal inductance roll off.
Best suited for high Power, high AC & DC Bias at high Switching Frequency.
Normally our customer specify the specs ( size, inductance, current)and we built to meet the specs.
Also available in MPP, Sendust/KoolMu cores.

HF Series High Flux Toroidal Power Inductors.


FEATURES:
  • Designed using high saturation (15,000 gauss) and high temperature stability "High 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 3.2 uH to 1000 uH
  • Current rating from 2.1 Amps to 50 Amps
  • Temperature Rating: -55 deg C to +125 Deg C
  • Potted version available for military application
  • Custom designs are available to meet your specific requirements
  • Application: Inductor for switching regulators, In-line noise filters; Flyback Transformers, PFC, Pulse transformer, Output Inductor, energy storage inductor

Click the button to see examples of our custom wound products. We wind anything to meet your needs.

IMPORTANT
1) See Shop Cart below for stock and Sample Quantity pricing
2) Note that quantity shown is subject to prior sales
3) FREE Samples available for large OEMs
4) If not in stock, Typical Delivery: 4 weeks


Notes:
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. 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
4
) 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.
9) "Dimensions:"

  • A = Outer Dimension
  • B = Height
  • C = Vertical Mounting Hole Distance
  • D = Lead length
  • E = Lead Width
  • F = Horizontal Mounting Hole Distance



Part Number Inductance Current
Rating
Incremental
Current
for 20 percent
L Drop
DCR
Max
SRF
Min
Dimensions
A / B / C
In Inches
Dimensions
D / E / F
In Inches
SolidWorks Model Thermal Model Quantity
on hand
Price
HF270-102M-2.4AH 1,000.00 uH 2.4 amps 3.5 amps 235 milli-Ohms 400.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.028 / 1.250     29 $9.25
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HF270-102M-2.4AV 1,000.00 uH 2.4 amps 3.5 amps 235 milli-Ohms 400.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.028 / 1.250     22 $9.25
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HF229-751M-2.1AV 750.00 uH 2.1 amps 2.5 amps 240 milli-Ohms 600.0 kHz 1.100 / 0.475 / 0.450 0.500 / 0.025 / 1.050 SolidWorks Model   45 $8.00
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HF270-751M-3.0AH 750.00 uH 3.0 amps 4.0 amps 160 milli-Ohms 600.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.032 / 1.250     56 $9.25
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HF270-751M-3.0AV 750.00 uH 3.0 amps 4.0 amps 160 milli-Ohms 600.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.032 / 1.250     99 $9.25
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HF2292-751M-3.0AV 750.00 uH 3.0 amps   180 milli-Ohms 783.0 kHz 1.11 / 0.84 / 0.79 0.50 / 0.81 SolidWorks Model   20
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HF2292-751M-3.0AH 750.00 uH 3.0 amps   180 milli-Ohms 783.0 kHz 1.13 / 0.79 0.50 / 0.81 / 1.10     20
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HF270-681M-4AV 680.00 uH 4.0 amps 5.5 amps 134 milli-Ohms 843.7 kHz 1.300 / 0.670 / 0.600 0.750 / 0.040 / 1.250 SolidWorks Model   45
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HF270-681M-4AH 680.00 uH 4.0 amps 5.5 amps 134 milli-Ohms 843.7 kHz 1.300 / 0.670 / 0.600 0.750 / 0.040 / 1.250     49
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HF229-501M-2.6AH 500.00 uH 2.6 amps 3.8 amps 160 milli-Ohms 8000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.028 / 1.050     124 $8.00
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HF229-501M-2.6AV 500.00 uH 2.6 amps 3.8 amps 160 milli-Ohms 8000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.028 / 1.050     47 $8.00
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HF270-501M-3.4AH 500.00 uH 3.4 amps 4.6 amps 131 milli-Ohms 800.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.032 / 1.250     24 $9.25
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HF270-501M-3.4AV 500.00 uH 3.4 amps 4.6 amps 131 milli-Ohms 800.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.032 / 1.250     44 $9.25
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HF229-251M-3.5AH 250.00 uH 3.5 amps 5.6 amps 88 milli-Ohms 1000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.032 / 1.050     59 $8.00
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HF229-251M-3.5AV 250.00 uH 3.5 amps 5.6 amps 88 milli-Ohms 1000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.032 / 1.050     48 $8.00
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HF270-251M-5.0AH 250.00 uH 5.0 amps 6.8 amps 60 milli-Ohms 1000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.040 / 1.250     23 $9.25
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HF270-251M-5.0AV 250.00 uH 5.0 amps 6.8 amps 60 milli-Ohms 1000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.040 / 1.250     23 $9.25
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HF270-201M-10AH 200.00 uH 10.0 amps 5.5 amps 25 milli-Ohms 4000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.051 / 1.250     31 $8.00
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HF270-201M-10AV 200.00 uH 10.0 amps 5.5 amps 25 milli-Ohms 4000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.051 / 1.250 SolidWorks Model   0 $8.00
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HF229-151M-4.5AH 150.00 uH 4.5 amps 6.0 amps 52 milli-Ohms 1000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.036 / 1.050     72 $8.00
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HF229-151M-4.5AV 150.00 uH 4.5 amps 6.0 amps 52 milli-Ohms 1000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.036 / 1.050 SolidWorks Model   50 $8.00
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HF270-151M-6.5AH 150.00 uH 6.5 amps 9.0 amps 35 milli-Ohms 1000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.045 / 1.250     58 $9.25
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HF270-151M-6.5AV 150.00 uH 6.5 amps 9.0 amps 35 milli-Ohms 1000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.045 / 1.250 SolidWorks Model   46 $9.25
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HF229-101M-4.9AH 100.00 uH 4.9 amps 8.2 amps 44 milli-Ohms 2000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.036 / 1.050     44 $8.00
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HF229-101M-4.9AV 100.00 uH 4.9 amps 8.2 amps 44 milli-Ohms 2000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.036 / 1.050     48 $8.00
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HF270-101M-8.0AH 100.00 uH 8.0 amps 10.0 amps 23 milli-Ohms 2000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.045 / 1.250     36 $9.25
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HF270-101M-8.0AV 100.00 uH 8.0 amps 10.0 amps 23 milli-Ohms 2000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.045 / 1.250 SolidWorks Model   42 $9.25
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HF229-750M-5.9AH 75.00 uH 5.9 amps 9.1 amps 30 milli-Ohms 30000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.040 / 1.050     10 $8.00
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HF229-750M-5.9AV 75.00 uH 5.9 amps 9.1 amps 30 milli-Ohms 30000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.040 / 1.050 SolidWorks Model   49 $8.00
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HF270-750M-8.0AH 75.00 uH 8.0 amps 12.0 amps 23 milli-Ohms 3000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.051 / 1.250     255 $9.25
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HF270-750M-8.0AV 75.00 uH 8.0 amps 12.0 amps 23 milli-Ohms 3000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.051 / 1.250     43 $9.25
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HF270-700M-20AH 70.00 uH 20.0 amps 10.0 amps 8 milli-Ohms 4000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.072 / 1.250     63 $9.25
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HF270-700M-20AV 70.00 uH 20.0 amps 10.0 amps 8 milli-Ohms 4000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.072 / 1.250     158 $9.25
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HF2702-700M-15.0AH 70.00 uH 15.0 amps 10.0 amps 9 milli-Ohms >10000.0 kHz 1.320 / 0.750 / 1.150 0.750 / 0.065 / 1.250     20 $12.50
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HF2702-700M-15.0AV 70.00 uH 15.0 amps 10.0 amps 9 milli-Ohms >10000.0 kHz 1.320 / 0.750 / 1.150 0.750 / 0.065 / 1.320 SolidWorks Model   6 $12.50
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HF229-500M-6.9AH 50.00 uH 6.9 amps 12.0 amps 22 milli-Ohms 4000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.046 / 1.050     16 $8.00
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HF229-500M-6.9AV 50.00 uH 6.9 amps 12.0 amps 22 milli-Ohms 4000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.046 / 1.050 SolidWorks Model   50 $8.00
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HF229-500M-8.3AH 50.00 uH 8.3 amps 12.0 amps 22 milli-Ohms 4000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.051 / 1.050     45 $8.00
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HF229-500M-8.3AV 50.00 uH 8.3 amps 12.0 amps 22 milli-Ohms 4000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.051 / 1.050     50 $8.00
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HF270-500M-9.9AH 50.00 uH 9.9 amps 15.2 amps 16 milli-Ohms 4000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.051 / 1.250     123 $9.25
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HF270-500M-9.9AV 50.00 uH 9.9 amps 15.2 amps 16 milli-Ohms 4000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.051 / 1.250 SolidWorks Model   50 $9.25
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CWS-1HF-12723 40.00 uH 22.0 amps 20.0 amps 8 milli-Ohms 7300.0 kHz 1.340/0.710/0.65 0.75/0.07     0 $9.25
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HF270-290M-12.8AH 29.00 uH 12.8 amps 18.2 amps 13 milli-Ohms 8000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.051 / 1.250     58 $9.25
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HF270-290M-12.8AV 29.00 uH 12.8 amps 18.2 amps 13 milli-Ohms 8000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.051 / 1.250     44 $9.25
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HF229-250M-9.8AH 25.00 uH 9.8 amps 16.0 amps 11 milli-Ohms 8000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.051 / 1.050     10 $8.00
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HF229-250M-9.8AV 25.00 uH 9.8 amps 16.0 amps 11 milli-Ohms 8000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.051 / 1.050 SolidWorks Model   63 $8.00
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HF270-250M-12.8AH 25.00 uH 12.8 amps 20.0 amps 7 milli-Ohms 8000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.072 / 1.250     45 $9.25
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HF270-250M-12.8AV 25.00 uH 12.8 amps 20.0 amps 7 milli-Ohms 8000.0 kHz 1.300 / 0.650 / 0.600 0.750 / 0.072 / 1.250 SolidWorks Model   50 $9.25
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HF229-200M-15AH R D 20.00 uH 15.0 amps 17.0 amps 8 milli-Ohms 8000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.064 / 1.050     110 $8.00
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HF229-200M-15AV 20.00 uH 15.0 amps 17.0 amps 8 milli-Ohms 8000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.064 / 1.050 SolidWorks Model   85 $8.00
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HF229-100M-14.5AH 10.00 uH 14.5 amps 21.0 amps 8 milli-Ohms 20000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.051 / 1.050     8 $8.00
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HF229-100M-14.5AV 10.00 uH 14.5 amps 21.0 amps 8 milli-Ohms 20000.0 kHz 1.100 / 0.475 / 0.370 0.500 / 0.051 / 1.050 SolidWorks Model   43 $8.00
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HF203-050M-22AV 5.40 uH 22.0 amps 22.4 amps 2 milli-Ohms 30000.0 kHz 1.063 / 0.453 / 0.470 0.500 / 0.073 / 1.000     36 $8.00
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HF203-050M-22AH 5.40 uH 22.0 amps 22.4 amps 2 milli-Ohms 30000.0 kHz 1.063 / 0.453 / 0.470 0.500 / 0.073 / 1.000     16 $8.00
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HF270-040M-50AV 4.00 uH 50.0 amps 54.0 amps 1.30 milli-Ohms >10000 KHz 1.30 / 1.71 / 1.00 0.083 x 0.17 / 0.64     54 $9.25
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HF270-040M-50AH 4.00 uH 50.0 amps 54.0 amps 1.30 milli-Ohms >10000.0 kHz 1.44 / 0.61 0.98 / 0.06x0.165 / 0.46 SolidWorks Model   176 $9.25
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HF203-3R2M-30AV 3.20 uH 30.0 amps 29.1 amps 1 milli-Ohms 40000.0 kHz 1.080 / 0.500 / 0.500 0.500 / 0.080 / 1.000 SolidWorks Model   10 $8.00
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HF203-3R2M-30AH 3.20 uH 30.0 amps 29.1 amps 1 milli-Ohms 40000.0 kHz 1.120 / 0.520 / 0.500 0.500 / 0.080 / 1.120     14 $8.00
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CWS-1HF-12723-H 0.00                 0 $9.25
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CWS-1HF-12723-V 0.00                 0 $9.25
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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 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)