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
Fireproof high
temperature ceramic
case with stand-off
Inorganic
fireproof
encapsulant
Metal Glaze™ thick film
resistive element
PWRG Series
• 3 and 5 watts
• 1Ω to 1MΩ range
• TC’s from +100 ppm/°C
• Radial leads for PC mount
General Purpose Power
Metal Glaze™ Resistor
Dimensions (Inches and (mm))
IRC Type A B C D E LD
PWRG-3 0.475 ±0.030
(12.0 ±0.8)
0.320 ±0.030
(8.1 ±0.8)
1.00 ±0.030
(25.4 ±0.8)
0.200 ±0.062
(5.08 ±1.6)
0.175 ±0.062
(4.44 ±1.6)
0.032 ±0.002
(1.02 ±0.05)
PWRG-5 0.500 ±0.030
(12.7 ±0.8)
0.350 ±0.030
(8.8 ±0.8)
1.00 ±0.030
(25.4 ±0.8)
0.200 ±0.062
(5.08 ±1.6)
0.175 ±0.062
(4.44 ±1.6)
0.032 ±0.002
(1.02 ±0.05)
Physical Data
Specifications
- Power Rating: 3 and 5 watts
- Resistance Range: 1Ω to 1MΩ
-Tolerance: ±1%, ±2%, ±5%, and ±10%,
- Flameproof inorganic construction
A
C
E
B
LD
D
0.080
±0.032
0.170
±0.062
Meniscus
permitted to
bottom of feet
PWRG Series Issue November 2008 Sheet 1 of 2
• 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
Temperature Rise Chart
300
200
100
0
0 20 40 60 80 100 120
Hot Spot Temperature (°C)
Rated Power (%)
PWRG - 3, 5
Power Derating Curve
100
80
60
40
0 50 100 150 200 250
Hot Spot Temperature (°C)
Rated Power (%)
20
0
85
PWRG - 3, 5
Sample Part No.
IRC Type
PWRG
Power
Resistance Range
Tolerance
J = ±5%, K = ±10%
Ordering Data
PWRG 5 1202 K
General Purpose Power
Metal Glaze™ Resistor
PWRG Series Issue November 2008 Sheet 2 of 2
