General Purpose Radial Terminal

Power Wirewound Resistor 

PW Radial Series

0.10 to 2.0K

20 watts to 50 watts

±10% or ±5% tolerance

RoHS compliant construction available

Custom parts available - consult factory

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

Inorganic

fireproof

encapsulant

Steatite

ceramic case

Alloy resistance wire on

fiberglass substrate

Tinned steel

PW Radial Series

• 0.10

Ω to 2.0KΩ

• 20 watts to 50 watts

• ±10% or ±5% tolerance

• RoHS compliant construction available

• Custom parts available - consult factory

General Purpose

Radial Terminal

Power Wirewound Resistor

Type

Power Rating @ 25°C

(watts)

Resistance

Range (ohms)

PW-20E

20

0.1 to 2.0K

PW-30

30

0.5 to 1.2K

PW-40

40

0.65 to 1.5K

PW-50E

50

0.08 to 1.8K

- Flameproof inorganic construction

- EIA RS-344, insulated fixed wirewound resistors

- 1000 hour load life at 25°C: 5% max.

- Moisture no load 240 hours: 2% max.

- Temperature cycling (5 cyc.): 5% max.

Electrical Data

Power Derating Curve

100

80

60

40

0

50

100

150

200

250

Ambient Temperature (°C)

20

0

PW - 20E, PW - 30, PW - 40

PW - 50E without Bracket

Temperature Rise Chart

300

200

100

0

0

25

50

75

100

125

Percent of Rated Load

PW - 50E

PW - 20E

PW - 40

PW - 30

With Bracket:

PW-30 Increased to 40 watts

PW-40 Increased to 50 watts

PW-50 Increased to 60 watts

PW Radial Series Issue March 2011 Sheet 1 of 2

07.19

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

All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)

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