General Note

IRC reserves the right to make changes in product specification without notice or liability.

All information is subject to IRC’s own data and is considered accurate at time of going to print.

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Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com

MHP TO-247 Series Issue May 2009

MHP TO-247 Series

Power Resistor

Electrical Data

IRC’s MHP series resistors satisfy demanding applications for accurate

and stable power resistors housed in the convenient TO-247 case. The

resistance element is isolated from the mounting tab by an alumina ceramic layer, providing very low thermal

resistance and ensuring high insulation resistance between terminals and metal back plate. The non-inductive

design makes these products especially useful in high frequency and high speed pulse applications.

Type

Voltage

Thermal

Resistance

Resistance

Range

Tolerances

Nominal

Resistance

Typ. Temperature

Min

Max

MHP100LF

100W

3W

700V

1.3°C/W

0.01Ω

0.09Ω

±5%

E6

±250 ppm/°C

0.1Ω

9.1Ω

±1%, ±5%

E12

±100 ppm/°C

10Ω

51KΩ

±1%, ±5%

E24

±50 ppm/°C

MHP140LF

140W

3W

700 V

0.9°C/W

0.01Ω

0.09Ω

±5%

E6

±250 ppm/°C

0.1Ω

9.1Ω

±1%, ±5%

E12

±100 ppm/°C

10Ω

51KΩ

±1%, ±5%

E24

±50 ppm/°C

1

Maximum current 25 amps

2

Power rating based on 25°C case temperature

3

Power rating based on 25°C ambient temperature

4

Maximum voltage 700V or P x R

5

See TCR Chart for resistance values below 1ohm

√

MHP TO-247 Series

Frequency Characteristics

1K

100

10

1

10K

100K

1M

10M

100M

1G

Frequency(Hz)

Pulse Energy Durability

100K

MHP100/140LF R200 J to MHP100/140LF 100R F

10K

1K

100

Pulse Width (seconds)

Safety Zone

100n

1µ

10µ

100µ

1m

10m

Damage Level

MHP100/140LF 10R0 F

MHP100/140LF 100R F

MHP100/140LF 1K0 F