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
High Value
Thick Film Resistor
Electrical Data
GC Series
• Value up to 1G ohm
• High stability thick film
• Tolerance down to 1%, 2%, 5%
IRC
Type
Power
Rating
at 70°C
(watts)
Resistance
Range
(ohms)
Limiting
Element
Voltage
(volts)
Isolation
Voltage
(volts)
TCR
(20 to
70°C)
(ppm/°C)
Resistance
Tolerance
(Code)
Standard
Values
Thermal
Impedance
(°C/watt)
Operating
Temperature
Range
(°C)
GC65 0.5 47K to 1G 3500 700 100 1(F), 2(G), 5(J)
EIA 2%
values
preferred
90 -55 to 155
Environmental Data
Typical
Load at Rated Voltage: 1000 hours @ 70°C ∆R% 0.1
Derating from Rated Power at 70°C zero at 155°C
Climatic ∆R% 1
Climatic Category 55/155/56
GC Series Issue October 2008 Sheet 1 of 2
CONSTRUCTION:
Thick film material is fired onto high grade ceramic rods. Nickel plated steel caps are force fitted to the rods and the terminations
are welded to the caps. The value is obtained by a helical cut in the film and, finally the resistor body is given a high temperature
protective coating.
TERMINATIONS:
Solder-coated copper wire.
MARKING:
Type reference, TCR code, resistance value, and tolerance code are legend marked.
SOLVENT RESISTANCE:
The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits.
• 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
Physical Data
High Value
Thick Film Resistor
Dimensions (Inches and (mm)) & WEIGHT (G)
IRC Type L max D max d nom Wt nom
GC65 0.394 (10.0) 0.146 (3.7) 0.024 (0.6) 0.4
d dia.
L 30mm
min.
d dia.
GC Series Issue October 2008 Sheet 2 of 2
Sample Part No.
IRC Type
GC65
Value
Tolerance (EIA format)
F = ±1%, J = ±5%
Packaging Details
A = Ammo Pkg, B = Box, R = Tape & Reel
Ordering Data
GC65 2M5 F Ammo
Specify type reference etc. as indicated in this example
of GC65 2.5Ω, 1%, taped and ammo boxed.
Packaging GC65 Packaging GC65
Box 100 Taped (reeled) 5000
Large box 1000 Taped (ammo box) 2000
Packaging Data
Loose packed in boxes or taped (on reel or in ammo box).
Standard Quantities Per Box/Spool:
