General Purpose
Carbon Film Resistors
CF Series
•
High stability performance
•
Only available as Lead Free
•
Auto sequencing/insertion compatible
•
Ideal for commercial/industrial applications
Electrical Data
Tested per MIL-STD-202
CF 1/8
Power Rating (watts) at 70°C
Derated to 0 Load at
Maximum Working Voltage
Operating Temperature Range
(±5%)
Resistance Range
(±2%)
10
Ω
- 1 MΩ
200V
1/8
CF 1/4
1/4
155°C
250V
-55°C to +155°C
1.0
Ω
- 22 MΩ
10
Ω
- 4.7 MΩ
10
Ω
- 4.7 MΩ
350V
CF 1/2
1/2
Environmental Data
CF 1/8
Moisture Resistance
Thermal Shock
Load life at 70°C - 1000 hours
Shock and Vibration
Resistance to Soldering Heat
Terminal Strength
Dielectric Withstand Voltage
Maximum Pulse Voltage
Insulation Resistance
Voltage Coefficient
Short Time Overload
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
CF Series Issue Sept 2009 Sheet 1 of 3
CF 1/4
<100 K ± (3% + 0.05
Ω)
>100 K ± (5% + 0.05
Ω)
±0.5%
<100 K ± (2% + 0.05
Ω)
<100 K ± (3% + 0.05
Ω)
±0.2%
±0.5%
±0.5%
CF 1/2
300 volts RMS min.
400V
500 volts RMS min.
600V
10,000 meg min.
-10 ppm/Vmax.
±0.75%
700 volts RMS min.
700V
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
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 September 2009 Sheet 2 of 3
General Purpose
Carbon Film Resistors
Performance Curves
Temperature Coefficient (Typical)
Temperature Coefficient (ppm/°C)
-250
-500
-750
-1000
-1250
-1500
-1750
-2000
10
100
1K
10K
100K
1M
10M
Derating Curve (Typical)
100
Percent Rated Load (%)
80
60
40
20
0
0
20
40
60
80
100 120 140
160
Ambient Temperature (°C)
Ambient Temperature (°C)
Current Noise (Typical)
0
1.0
-10
0.32
-20
0.10
-30
0.032
-40
100
0.010
1K
10K
Resistance (ohms)
100K
1M
10M
Ordering Data
Sample Part No.
IRC Type
CF
CF - 1/4
102
J
BLK
Size
Resistance Value
2 digit range and 1 digit multiplier
Tolerance
G = 2%
J = 5%
K = 10%
Packaging
BLK = Bulk
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
Noise Voltage (µv/v)
Noise Index (db)
CF Series Issue September 2009 Sheet 3 of 3
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