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
Precision Metal Film
Resistors
Electrical Data
GP Series
• Meets requirements of MIL-R-10509
• Flame-retardant coatings are standard
• 10 ohm - 10 megohm resistance range
• Resistance range tolerance of ±0.1% - 1%
• Temperature coefficients from ±25 to ±100ppm/°C
IRC
Type
IRC Power
Rating
(watts) MIL
Reference
Maximum
Working
Voltage
Resistance
Temperature
Coefficient
(±ppm/°C)
Tolerance & Resistance Range
+1% ±.5% ±.25 and ±0.1%
@
70°C
@
125°C
GP-50 (T0) 1/8 1/10 RN50 200 100 10 - 2.37 Meg 10 ohm - 499K ohm 100 ohm - 100K ohm
GP-50 (T2) 1/8 1/10 RN50 200 50 10 ohm - 1 Meg 10 ohm - 499K ohm 100 ohm - 100K ohm
GP-50 (T9) 1/8 1/10 RN50 200 25 49.9 ohm - 499K ohm 49.9 ohm - 499K ohm 100 ohm - 100K ohm
GP-55 (T0) 1/4 1/8 RN55 250 100 10 ohm - 10 Meg 10 ohm - 499K ohm 30 ohm - 300K ohm
GP-55 (T2) 1/4 1/8 RN55 250 50 10 ohm - 4.99 Meg 10 ohm - 499K ohm 30 ohm - 300K ohm
GP-55 (T9) 1/4 1/8 RN55 250 25 30 ohm - 499K ohm 30 ohm - 499K ohm 30 ohm - 300K ohm
GP-60 (T0) 1/2 1/4 RN60 350 100 10 ohm - 10 Meg 10 ohm - 499K ohm 100 ohm - 100K ohm
GP-60 (T2) 1/2 1/4 RN60 350 50 10 ohm - 4.99 Meg 10 ohm - 499K ohm 100 ohm - 100K ohm
GP-60 (T9) 1/2 1/4 RN60 350 25 49.9 ohm - 499K ohm 49.9 ohm - 499K ohm 100 ohm - 100K ohm
GP Series Issue October 2008 Sheet 1 of 4
• 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
Metal Glaze™ Resistor
Environmental Data
GP Series Issue October 2008 Sheet 2 of 4
Environmental (%∆R)
MIL-R-10509
Char. C EIA RS-196
Class 1
Typical Char. D
Moisture Resistance ±0.5 ±1.5 ±0.5 ±1.5
Thermal Shock ±0.25 ±0.5 ±0.25 -
Load life @ 70°C - 1000 hours ±0.5 ±1.0 ±0.5 ±2.0
Shock and Vibration ±0.25 ±0.5 ±0.25 -
Resistance to Soldering Heat ±0.1 ±0.5 ±0.1 -
Terminal Strength ±0.2 ±0.2 ±0.2 -
Dielectric Withstand Voltage ±0.25 ±0.5 ±0.25 ±0.5
Short Time Overload ±0.25 ±0.5 ±0.25 ±0.5
Operating Temperature Range -55°C to +165°C -55°C to +165°C -55°C to +165°C
Maximum Pulse Voltage GP50 400V, GP55
500V, GP60 600V
Insulation Resistance 10,000 meg min.
Voltage Coefficient 100ppm/V
• 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
Metal Glaze™ Resistor
Dimensions (inches and (mm))
Dimension GP50 GP55 GP60
A1.10 ± .08 (28.0 ± 2.0) 1.10 ± .08 (28.0 ± 2.0) 1.10 ± .08 (28.0 ± 2.0)
B0.13 + .01/-.00 (3.2 + 0.2/-0.0) 0.24 ± .01 (6.0 ± 0.3) 0.33 ± .02 (8.5 ± 0.5)
C0.018 ± .001 (0.45 ± 0.02) 0.023 ± .002 (0.60 ± 0.05) 0.027 ± .002 (0.70 ± 0.05)
D0.073 ± .006 (1.85 ± 0.15) 0.09 ± .01 (2.4 ± 0.2) 0.11 ± .01 (2.8 ± 0.3)
Construction
1. COLOR BANDS.
The resistors are permanently color banded for resistance value and tolerance in accordance with EIA specifications.
2. HELIXING.
The units are helixed to a predetermined base to final value ratio to obtain the best TCR, noise and stability characteristics.
3. FILM.
Carbon-film resistors have a homogeneous film of pure carbon deposited by a pyrolitic process at carefully controlled
temperatures.
4. SUBSTRATES.
The substrates are of a proprietary non alkaline ceramic, prepared and processed under exacting conditions to guarantee the
utmost in uniformity and surface characteristics.
5. INSULATION.
The resistors are coated with multiple layers of a baked-on fire-retardant synthetic resin which provides the units with a high
degree of mechanical and electrical protection in the most adverse operating conditions.
6. TERMINATIONS.
Positive contact is provided to the resistance element by precision-made end caps. The lead wires are attached by using
proprietary welding techniques.
B
C
AAD
123 4 5 6
Physical Data
GP Series Issue October 2008 Sheet 3 of 4
• 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
Metal Glaze™ Resistor
100
80
60
40
20
020 40
Percent Rated Load (%)
Ambient Temperature (°C)
60 120 140 160
0
80 100 180
Sample Part No.
IRC Type
Size
TCR
Resistance Value
3 digit range and 1 digit multiplier
Tolerance
F = 1%, D = .5%, C = .25%, B = .1%
Packaging
Bulk or Tape and Reel
Ordering Data
GP 55 100 1001 F BLK
GP Series Issue October 2008 Sheet 4 of 4
Performance Curves
High-Frequency Characteristics (Typical)
Derating Curve (Typical)
Current Noise (Typical)
0.003
10 100 1K 10K 100K
Nominal Resistance (ohms)
Ratio Rf / RDC
0
-10
-20
-30
-50
(db)
-40
0.01
0.03
0.1
0.3
1.0 GP-55
GP-60
1.0
0.8
0.6
0.4
0.2
0
0.1
Frequency (MHz)
Ratio RF / RDC
1 10 100
100Ω
1KΩ
10KΩ
100KΩ
