GENERAL PURPOSE
CARBON FILM RESISTORS
ISO-9001
Registered
CF
SERIES
•
•
•
•
High stability performance
Uniformity of all electrical parameters
Ideal for commercial/industrial applications
Auto sequencing/insertion compatible
PERFORMANCE CHARACTERISTICS (TESTED PER MIL-STD-202):
ELECTRICAL
Power Rating (watts) @ 70°C
Derated to 0 Load at
Maximum Working Voltage
Operating Temperature Range
Resistance Range
(±5%)
(±2%)
ENVIRONMENTAL
Moisture Resistance
Thermal Shock
Load Life @ 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
<100K±(3%+0.05Ω)
>100K±(5%+0.05Ω)
±0.5%
<100K±(2%+0.05Ω)
>100K±(3%+0.05Ω)
±0.2%
±0.5%
±0.5%
300 volts RMS min.
400V
10,000 meg min.
-10 ppm/Vmax.
±0.75%
<100K±(3%+0.05Ω)
>100K±(5%+0.05Ω)
±0.5%
<100K±(2%+0.05Ω)
>100K±(3%+0.05Ω)
±0.2%
±0.5%
±0.5%
500 volts RMS min.
600V
10,000 meg min.
-10 ppm/Vmax.
±0.75%
<100K±(3%+0.05Ω)
>100K±(5%+0.05Ω)
±0.5%
<100K±(2%+0.05Ω)
>100K±(3%+0.05Ω)
±0.2%
±0.5%
±0.5%
700 volts RMS min.
700V
10,000 meg min.
-10 ppm/Vmax.
±0.75%
CF 1/8
1/8
155°C
200V
-55°C to +155°C
1.0Ω - 22 meg
10Ω - 1 meg
CF 1/4
1/4
155°C
250V
-55°C to +155°C
1.0Ω - 22 meg
10Ω - 4.7 meg
CF 1/2
1/2
155°C
350V
-55°C to +155°C
1.0Ω - 22 meg
10Ω - 4.7 meg
DIMENSIONS
(Inches and (mm)):
A
B
A
D
C
Dimension
A
B
C
D
CF 1/8
1.10±.08 (28.0±2.0)
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 1/4
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)
CF 1/2
1.10±.08 (28.0±2.0)
0.33±.02 (8.5±0.5)
0.026±.002 (0.65±0.05)
0.11±.01(2.8±0.3)
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road
•
Boone, North Carolina 28607-1860
•
Tel: 828-264-8861
•
Fax: 828-264-8866
•
www.irctt.com
1
ISO-9001
Registered
CF PERFORMANCE CURVES:
Temperature Coefficient (Typical)
Temperature Coefficient (ppm/°C)
-250
-500
-750
-1000
-1250
-1500
-1750
-2000
10
CF CONSTRUCTION:
100
1K
10K
100K
1M
10M
1. COLOR BANDS.
The resistors are permanently color banded for resistance value and
tolerance in accordance with EIA specifications.
Ambient Temperature (°C)
2. HELIXING.
Derating Curve (Typical)
100
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.
80
Percent Rated Load
4. SUBSTRATES.
60
The substrates are of a proprietary non alkaline ceramic, prepared
and processed under exacting conditions to guarantee the utmost in
uniformity and surface characteristics.
40
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.
20
6. TERMINATIONS.
0
0
20
40
60
80
100
120
140
160
Ambient Temperature (°C)
Positive contact is provided to the resistance element by precision-
made end caps. The lead wires are attached by using proprietary
welding techniques.
Current Noise (Typical)
HOW TO ORDER:
Sample Part No.:
0
1.0
CF-1/4
Noise Voltage (µv/v)
102 J
Noise Index (db)
-10
0.32
IRC Type
Size
Resistance
Value
2 digit range and
1 digit multiplier
-20
0.10
-30
0.032
-40
100
1K
10K
100K
1M
0.010
10M
Tolerance
G = 2%, J = 5%
Resistance (ohms)
Packaging
Bulk or Tape and Reel
2
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road
•
Boone, North Carolina 28607-1860
•
Tel: 828-264-8861
•
Fax: 828-264-8866
•
www.irctt.com
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