IRC TT CF-SERIES General purpose carbon film resistor Datasheet

General Purpose
Carbon Film Resistors
CF Series
• High stability performance
• Uniformity of all electrical parameters
• Auto sequencing/insertion compatible
• Ideal for commercial/industrial applications
Electrical Data
Tested per MIL-STD-202
CF 1/8
CF 1/4
CF 1/2
1/8
1/4
1/2
Power Rating (watts) at 70°C
Derated to 0 Load at
155°C
Maximum Working Voltage
200V
Operating Temperature Range
Resistance Range
350V
-55°C to +155°C
(±5%)
(±2%)
250V
1.0Ω - 22 meg
10Ω - 1 meg
10Ω - 4.7 meg
10Ω - 4.7 meg
CF 1/8
CF 1/4
CF 1/2
Environmental Data
<100K ± (3% + 0.05Ω)
Moisture Resistance
>100K ± (5% + 0.05Ω)
Thermal Shock
±0.5%
<100K ± (2% + 0.05Ω)
Load life at 70°C - 1000 hours
<100K ± (3% + 0.05Ω)
Shock and Vibration
±0.2%
Resistance to Soldering Heat
±0.5%
Terminal Strength
±0.5%
Dielectric Withstand Voltage
300 volts RMS min.
500 volts RMS min.
700 volts RMS min.
400V
600V
700V
Maximum Pulse Voltage
Insulation Resistance
Voltage Coefficient
Short Time Overload
10,000 meg min.
-10 ppm/Vmax.
±0.75%
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.
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
A subsidiary of
TT electronics plc
CF Series Issue August 2008 Sheet 1 of 3
General Purpose
Carbon Film Resistors
Physical Data
B
A
D
A
C
Dimensions (inches and (mm))
Dimension
CF 1/8
CF 1/4
A
CF 1/2
1.10 ± .08 (28.0 ± 2.0)
B
0.13 + .01/-.00 (3.2 + 0.2/-0.0)
0.24 ± .01 (6.0 ± 0.3)
0.33 ± .02 (8.5 ± 0.5)
C
0.018 ± .001 (0.45 ± 0.02)
0.022 ± .001 (0.55 ± 0.03)
0.026 ± .002 (0.65 ± 0.05)
D
0.07 ± .01 (1.8 ± 0.15)
0.09 ± .01 (2.3 ± 0.2)
0.11 ± .01 (2.8 ± 0.3)
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
General Purpose
Carbon Film Resistors
Performance Curves
Ordering Data
Temperature Coefficient (Typical)
Sample Part No.
CF - 1/4
102
J
BLK
Temperature Coefficient (ppm/°C)
IRC Type
CF
-250
Size
-500
Resistance Value
-750
2 digit range and 1 digit multiplier
-1000
Tolerance
-1250
G = 2%
J = 5%
K = 10%
-1500
Packaging
-1750
BLK = Bulk
-2000
10
100
1K
10K
100K
1M
10M
Ambient Temperature (°C)
Derating Curve (Typical)
Percent rated load (%)
100
80
60
40
20
0
0
20
40
60
80
100 120 140
160
Ambient Temperature (°C)
Current Noise (Typical)
1.0
-10
0.32
-20
0.10
-30
0.032
-40
100
Noise Voltage (µv/v)
Noise Index (db)
0
0.010
1K
10K
100K
1M
10M
Resistance (ohms)
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 3 of 3
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