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
Thick Film Semi-Precision
Metal Glaze™
Power Resistors
Electrical Data
GS-3 Series
• Superior surge performance
• Resistance range from 1Ω - 3MΩ
• Standard tolerances of ±1%, ±2%, ±5%
• Power rating of 3W @25°C; 2W @70°C
• Effective as carbon composite replacement
Environmental Data
GS-3 Series Issue October 2008 Sheet 1 of 3
Part
Number
Power Rating
(Watts)
Resistance
Range
(Ohms)
Tolerance
(±%)
TCR
(±ppm/°C)
Maximum
Operating
Voltage
(Volts)
Dielectric
Withstanding
Voltage
(Volts)
GS-3 2.0 (@ 70°C)
3.0 (@ 25°C) 1.0 - 3M 1, 2, 5 50 (>10Ω)
100, 200 (≤ 10Ω)1000 1000
Test
Maximum ∆R Limits
MIL-R-26 MIL-R-10509D MIL-R-22684 GS-3
TCR ±ppm/°C 30 100 200 100/50
Load life 0.5 1.0 2.0 2.0
Short term overload 0.20 0.50 0.50 0.20
Moisture 0.20 1.50 1.50 0.40
Temperature Cycling 0.20 0.50 - 0.20
Solder Effect - 0.50 0.50 0.20
Termination Strength 0.10 0.20 0.50 0.10
Shock 0.10 0.50 0.50 0.10
Vibration 0.10 0.50 0.50 0.10
Operating Temperature -55°C to +175°C
%∆R
%∆R
%∆R
%∆R
%∆R
%∆R
%∆R
%∆R
• 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
Thick Film Semi-Precision
Metal Glaze™
Power Resistors
GS-3 Series Issue October 2008 Sheet 2 of 3
Dimensions (inches and (mm))
Type L W H ød
GS-3 0.515 ± 0.010
(13.1 ± 0.3)
0.225 ± 0.008
(5.7 ± 0.2)
1.50 ± 0.125
(38.1 ± 3.2)
0.032 ± 0.002
(0.8128 ± 0.05)
Physical Data
Power Derating Chart
075 125 175
100
80
60
40
20
0
Ambient Temperature (°C)
Percent Rated Power
Hot Spot Temperature +25°C Ambient
025 50 75
125
100
75
50
25
0
Percent 25°C Power Rating
Degrees (°C)
100
150
175
200
L
W
H
GS-3
d
• 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 GS-3 Series Issue October 2008 Sheet 3 of 3
Thick Film Semi-Precision
Metal Glaze™
Power Resistors
Sample Part No.
IRC Type
GS = (Fixed Film Resistor High Stability)
Power Rating
3 = 3W @ 25°C / 2W @ 70°C
TCR Characteristics
50 = ±50 pmm/°C
100 = ±100 pmm/°C
200 = ±200 pmm/°C
(available on values greater than 10 ohms)
Resistance Value
(100 ohms and greater - First 3 significant digits plus 4th digit multiplier)
Example: 100 ohms = 1000, 1000 ohms = 1001, 150,000 ohms = 1503
(Less than 100 ohms - "R" is used to designate decimal)
Example: 51 ohms = 51R0, 1 ohm = 1R00, 0.25 ohms = R250
Tolerance
F = ±1%, G = ±2%, J = ±5%
RoHS Compliance
LF = RoHS-compliant product
Packaging
SLT = Standard Lead Tape
T24
T25
Ordering Data
GS - 3 100 1000 J LF SLT
