General Purpose
Carbon Film Resistors
Physical Data
A
B
A
D
C
Dimensions (inches and (mm))
Dimension
A
B
C
D
0.13 + .01/-.00 (3.2 + 0.2/-0.0)
0.018 ± .001 (0.45 ± 0.02)
0.07 ± .01 (1.8 ± 0.15)
CF 1/8
CF 1/4
1.10 ± .08 (28.0 ± 2.0)
0.24 ± .01 (6.0 ± 0.3)
0.022 ± .001 (0.55 ± 0.03)
0.09 ± .01 (2.3 ± 0.2)
0.33 ± .02 (8.5 ± 0.5)
0.026 ± .002 (0.65 ± 0.05)
0.11 ± .01 (2.8 ± 0.3)
CF 1/2
Construction
1
2
3
4
5 6
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.
Wire and Film Technologies Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
CF Series Issue August 2008 Sheet 2 of 3
IRCTT [ IRC - A TT ELECTRONICS COMPANY. ]
