CF / CFM Series
Carbon Film Resistors
Features:
Stackpole Electronics, Inc.
Resistive Product Solutions
General purpose resistor ideal for commercial/industrial
applications
Flame retardant coatings standard, flameproof optional;
contact factory
Panasert available on selected sizes; contact factory
Auto sequencing/insertion compatible
CFM (mini) ideal choice when size constraints apply
Cut and formed product is available on select sizes; contact
factory
Standard lead wire for CF/CFM is copper plated steel, with
100% tin over plate
100% tin plate on copper wire is available as type
CFQ/CFQM
RoHS compliant / lead-free
Electrical Specifications
Type / Code
CF 1/8
CF 1/4
CF 1/2
CF 1
CF 2
CFM 1/4
CFM 1/2
Power Rating
(Watts) @ 70ºC
0.125W
0.250W
0.500W
1.000W
2.000W
0.250W
0.500W
Maximum Working
Voltage
1
250V
350V
350V
500V
500V
250V
350V
Maximum Pulse
Voltage
500V
600V
700V
1,000V
1,000V
500V
600V
Dielectric Withstanding
Voltage
300V
500V
700V
1,000V
1,000V
500V
500V
Ohmic Range and Tolerance
2%
10Ω - 4.7MΩ
1Ω - 4.7MΩ
10Ω - 4.7MΩ
1Ω - 10MΩ
10Ω - 1MΩ
10Ω - 1MΩ
10Ω - 4.7MΩ
5%
1Ω - 22MΩ
1Ω - 22MΩ
1Ω - 22MΩ
1Ω - 22MΩ
1Ω - 22MΩ
1Ω - 22MΩ
1Ω - 22MΩ
1
Lesser of
√PR
or maximum working voltage.
How to Order
SEI Type
Code
Nominal
Resistance
Tolerance
Packaging
CF
Code
CF
CFM
PCF
PCFM
CFQ
CFQM
Description
Standard
Mini
Panasert CF 1/4
Panasert CF 1/2
Tin plating on copper wire
Tin plating (mini)
Code
1/8
1/4
1/2
1
2
1/2
Wattage
0.125W
0.250W
0.500W
1.000W
2.000W
100K
5%
Tolerance
2%
5%
R
SEI Types
CF 1/8, CF 1/4, CF 1/2, CFM 1/4, CFM 1/2
CF 1
CF 2
PCF 1/4, PCFM 1/2
CF 1/8, CF 1/4, CFM 1/4, CFM 1/2
CF 1/2
CF 1, CF 2
PCF 1/4, PCFM 1/2
ALL
Pkg Qty
5,000
2,000
1,000
2,000
5,000
2,000
1,000
5,000
1,000
Description
Tape
Code
R
Q
Ammo
Panasert
Bulk
T
P
A
Rev Date: 5/20/2009
1
www.seielect.com
marketing@seielect.com
CF / CFM Series
Carbon Film Resistors
Stackpole Electronics, Inc.
Resistive Product Solutions
Mechanical Specifications
Type / Code
CF 1/8
CF 1/4
CF 1/2
CF 1
CFM 1/4
CFM 1/2
L
Body Length
0.13 ± 0.01
3.2 ± 0.2
0.26 ± 0.02
6.5 ± 0.05
0.33 ± 0.02
8.5 ± 0.5
0.43 ± 0.04
11.0 ± 1.0
0.13 ± 0.01
3.2 ± 0.2
0.26 ± 0.02
6.5 ± 0.5
W
Body Diameter
0.07 ± 0.01
1.8 ± 0.2
0.09 ± 0.01
2.3 ± 0.2
0.11 ± 0.02
2.7 ± 0.5
0.18 ± 0.02
4.5 ± 0.5
0.07 ± 0.01
1.8 ± 0.2
0.09 ± 0.01
2.3 ± 0.2
H
Lead Length(Bulk)
1.10 ± 0.12
28.0 ± 3.0
1.10 ± 0.12
28.0 ± 3.0
1.18 ± 0.12
30.0 ± 3.0
1.18 ± 0.12
30.0 ± 3.0
1.10 ± 0.12
28.0 ± 3.0
1.10 ± 0.12
28.0 ± 3.0
D
Lead Diameter
0.018 ± 0.002
0.45 ± 0.05
0.022 ± 0.002
0.56 ± 0.05
0.024 ± 0.002
0.60 ± 0.05
0.031 ± 0.004
0.80 ± 0.1
0.018 ± 0.002
0.45 ± 0.05
0.022 ± 0.002
0.56 ± 0.05
Units
inches
mm
inches
mm
inches
mm
inches
inches
inches
mm
inches
mm
Performance Characteristics
Test
Short Time Overload
Resistance to Solder Heat
Dielectric Withstanding Voltage
Load Life
Terminal Strength
Moisture Resistance
Standard / Method
EIA-RS-172-B 3.2.6
MIL-STD 202 Method 210
JIS C 5202 5.6
MIL-STD 202 Method 108
MIL-STD 202 Method 211
MIL-STD 202 Method 106
Test Results
± 0.5%
± 0.5%
± 0.5%
± 1%
± 0.2%
± 0.5%
Operating Temperature Range: -55°C to +155°C
Rev Date: 5/20/2009
2
www.seielect.com
marketing@seielect.com
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