Automotive Dropping Resistors

PWHW Series

TCR of 150 ppm/°C

Flameproof package

±5% Resistance Tolerance

Maximum Delta R over life <5%

Typicalresistancerangeof0.100Ωto0.900Ω

Packageratingsof30W,45W,&115Wforcontinuousoperationat125°C

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.

A subsidiary of

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

PWHW Series

Ω to 0.900Ω

Automotive Dropping

Resistors

PWHW Series Products

• Fan Speed Control

• Daytime Running Lamps

• Fuel Pump

• Other Running Voltage Applications

PWHW Construction Accessories

• Lead Harness

• Connector

• Resettable or One Time Fuse

• Mounting Brackets and Relay Fasteners

Test

Condition

Duration

Short Time Overload

25°C

10 seconds @ 4x power

Intermittent Operating Life

25°C

400 cycles over 2000 hours

Weld Pull Test

20 lb min

Destructive test

Moisture No-Load Test

32°C / 95% RH

240 hours

Life Test

25°C

30K cycles

Steady State Load Life Test

125°C

160 hours

Low Temp Storage Test

-40°C

24 hours

Resistance to Freezing Test

-40°C

24 hours water soak, 12 hour dwell

Thermal Shock Test

25°C

Load temp water quench, 5 cycles

Salt Solution Soak Test

25°C

96 hours

Vibration Test

25°C

10 G per axis, linear sweep 100-250 hz

4 hours per axis minimum

Temp Cycle - Rated Power*

-40 to 115°C

30 cycles, 2 hour dwell per each extreme

Light Rain / Spray*

25°C

3.2 L/min for 10 minutes

Salt Mist Atmosphere*

25 to 75°C

3.2 L/min for 10 minutes, 96 hour power cycle

Temp Cycle Battery Potential*

-40 to 115°C

Battery potential and open return

Environmental Data

* DRL only

PWHW Series Issue December 2008 Sheet 1 of 2

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.

A subsidiary of

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

PWHW Series

Ω to 0.900Ω

Automotive Dropping

Resistors

PWHW Series Products

• Fan Speed Control

• Daytime Running Lamps

• Fuel Pump

• Other Running Voltage Applications

PWHW Construction Accessories

• Lead Harness

• Connector

• Resettable or One Time Fuse

• Mounting Brackets and Relay Fasteners

Test

Condition

Duration

Short Time Overload

25°C

10 seconds @ 4x power

Intermittent Operating Life

25°C

400 cycles over 2000 hours

Weld Pull Test

20 lb min

Destructive test

Moisture No-Load Test

32°C / 95% RH

240 hours

Life Test

25°C

30K cycles

Steady State Load Life Test

125°C

160 hours

Low Temp Storage Test

-40°C

24 hours

Resistance to Freezing Test

-40°C

24 hours water soak, 12 hour dwell

Thermal Shock Test

25°C

Load temp water quench, 5 cycles

Salt Solution Soak Test

25°C

96 hours

Vibration Test

25°C

10 G per axis, linear sweep 100-250 hz

4 hours per axis minimum

Temp Cycle - Rated Power*

-40 to 115°C

30 cycles, 2 hour dwell per each extreme

Light Rain / Spray*

25°C

3.2 L/min for 10 minutes

Salt Mist Atmosphere*

25 to 75°C

3.2 L/min for 10 minutes, 96 hour power cycle

Temp Cycle Battery Potential*

-40 to 115°C

Battery potential and open return

Environmental Data

* DRL only

PWHW Series Issue December 2008 Sheet 1 of 2

Resistors

Make Possible

07.14

General Note

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

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

© TT Electronics plc

www.ttelectronicsresistors.com