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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TT electronics plc

• 4222 South Staples Street • Corpus Christi Texas 78411 USA

Wire and Film Technologies Division

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

High Voltage

Metal Film Resistor

MH Series

Electrical Data

IRC

Type

Power

Rating

@ 70°C

(watts)

Resistance

Range

(ohms)

Limiting

Element

Voltage

(volts dc or ac

peak)

TCR

(ppm/°C)

Isolation

Voltage

(volts)

Resistance

Tolerance

(%)

Standard

Values

Thermal

Impedance

(°C/watt)

Operating

Temperature

Range

(°C)

MH25

0.25

100K - 2M2

1600

100

700

1, 2, 5

E24 &

E96

Preferred

140

-55 to 155

MH37

0.50

100K - 1M0

3500

112

Performance

Maximum

Typical

Load at Rated Voltage: 1000 hrs at 70°C

1.5

0.47

Derating

Zero at 155°C

Short Time Overload

1.0

0.25

Dry Heat: 16 hrs @ 155°C

1.5

0.2

56 days DHSS

1.5

0.2

Climatic

1.5

0.2

Climatic Category

55/155/56

Temperature Rapid Change

0.5

0.05

Resistance to Solder heat

0.5

0.05

Vibration and Bump

0.5

0.05

Voltage Proof

700 min

Environmental Data

MH Series Issue October 2008 Sheet 1 of 2