CF/CFM Series
Carbon Film Resistor
Features:
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Stackpole Electronics, Inc.
Resistive Product Solutions
General purpose resistor ideal for commercial/industrial
applications
Flame retardant coatings standard
Flameproof version available as CFF
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
CF18
CF14
CF12
CF1
CF2
CFM14
CFM12
CFM1
Power Rating
(Watts) @ 70ºC
0.125W
0.25W
0.5W
1W
2W
0.25W
0.5W
1W
Maximum
Working
Voltage (1)
250V
350V
350V
500V
500V
250V
350V
600V
Maximum
Overload
Voltage
500V
600V
700V
1,000V
1,000V
500V
600V
1,000V
Dielectric
Withstanding
Voltage
350V
350V
600V
600V
600V
350V
350V
600V
<10Ω = ±400ppm/ºC
10Ω to 9.99KΩ = 0 ~ -400ppm/ºC
10KΩ to 99KΩ = 0 ~ -500ppm/ºC
100KΩ to 999KΩ = 0 ~ -850ppm/ºC
1MΩ and above = 0 ~ -1500ppm/ºC
Resistance Temperature Coefficient
per Ohmic Range
Ohmic Range (Ω)
and Tolerance
2%
10 - 1M
1 - 1M
10 - 1M
1 - 1M
10 - 1M
10 - 1M
10 - 1M
10 - 1M
5%
1 - 22M
1 - 22M
1 - 22M
1 - 10M
1 - 10M
1 - 10M
1 - 10M
1 - 10M
(1) Lesser of √PR or maximum working voltage.
Mechanical Specifications
Type / Code
CF18
CF14
CF12
CF1
CF2
CFM14
CFM12
CFM1
A
Body Length
0.130 ± 0.012
3.30 ± 0.30
0.236 ± 0.012
6.00 ± 0.30
0.335 ± 0.039
8.50 ± 1.00
0.433 ± 0.039
11.00 ± 1.00
0.591 ± 0.039
15.00 ± 1.00
0.130 ± 0.012
3.30 ± 0.30
0.236 ± 0.012
6.00 ± 0.30
0.354 ± 0.020
9.00 ± 0.50
B
Body Diameter
0.067 ± 0.012
1.70 ± 0.30
0.091 ± 0.012
2.30 ± 0.30
0.106 ± 0.020
2.70 ± 0.50
0.177 ± 0.020
4.50 ± 0.50
0.197 ± 0.020
5.00 ± 0.50
0.067 ± 0.012
1.70 ± 0.30
0.091 ± 0.012
2.30 ± 0.30
0.138 ± 0.020
3.50 ± 0.50
C
Lead Length(Bulk)
1.102 ± 0.118
28.00 ± 3.00
1.102 ± 0.118
28.00 ± 3.00
1.102 ± 0.118
28.00 ± 3.00
1.181 ± 0.118
30.00 ± 3.00
1.339 ± 0.157
34.00 ± 4.00
1.102 ± 0.118
28.00 ± 3.00
1.102 ± 0.118
28.00 ± 3.00
1.102 ± 0.118
28.00 ± 3.00
D
Lead Diameter
0.018 ± 0.003
0.45 ± 0.08
0.022 ± 0.003
0.55 ± 0.08
0.028 ± 0.002
0.70 ± 0.05
0.028 ± 0.002
0.70 ± 0.05
0.028 ± 0.002
0.70 ± 0.05
0.018 ± 0.003
0.45 ± 0.08
0.022 ± 0.003
0.55 ± 0.08
0.028 ± 0.002
0.70 ± 0.05
Unit
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
Rev Date: 12/26/2013
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
1
www.seielect.com
marketing@seielect.com
CF/CFM Series
Carbon Film Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Performance Characteristics
Test
Short Time Overload
Resistance to Solder Heat
Dielectric Withstanding Voltage
Load Life
Terminal Strength
Moisture Resistance
Operating Temperature Range: -55°C to +155°C
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%
Power Derating Curve:
100
80
-55ºC
70ºC
Power Load (%)
60
40
20
155ºC
0
-60
-40
-20
0
20
40
60
80
100
Ambient Temperature (ºC)
120
140
160
180
Rev Date: 12/26/2013
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
2
www.seielect.com
marketing@seielect.com
CF/CFM Series
Carbon Film Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
How to Order
1
2
3
4
5
6
7
8
9
10
C
Product Series
Standard
Flameproof
Mini
Panasert CF14
Panasert CF12
Tin plating on copper wire
Tin plating (mini)
Tin plating on copper wire
Panasert
F
1
Size Power Rating
0.125W
18
0.25W
14
0.5W
12
1W
1
2W
2
2
Tolerance
Code Tol
2%
G
5%
J
J
Code
B
T
Description
Bulk
1
0
0
Quantity
1,000
5,000
2,500
2,000
1,000
5,000
2,000
1,000
K
Resistance Value
Four characters with
the multiplier used as
the decimal holder.
10 ohm = 10R0
10.2 Kohm = 10K2
1 Mohm = 1M00
CF
CFF
CFM
PCF
PCFM
CFQ
CFQM
PCFQ
Size
CF18, CFM14, CF14, CFM12
CF12, CFM1, CF1, CF2
CF18, CFM14, CF14,
CFM12, CF12, PCF14, PCFM12
T
Tape and Reel
A
Ammo
CFM1
CF1
CF2
CF18, CFM14, CF14, CFM12
CF12, CFM1, PCF14, PCFM12
CF1, CF2
Legacy Part Number (before January 3, 2011):
SEI Type
Code
Nominal
Resistance
Tolerance
Packaging
CF
Code
CF
CFF
CFM
PCF
PCFM
CFQ
CFQM
PCFQ
Description
Standard
Flameproof
Mini
Panasert CF 1/4
Panasert CF 1/2
Tin plating on copper wire
Tin plating (mini)
Tin plating on copper wire
Panasert
1/2
Code Wattage
1/8 0.125W
1/4
0.25W
1/2
0.5W
1
1W
2
2W
100K
5%
Tolerance
2%
5%
Code
SEI Types
CF 1/8
CFM 1/4
CF 1/4
CFM 1/2
CF 1/2
CFM 1
CF 1
CF 2
PCF 1/4
PCFM 1/2
A
Bulk
R
R
Tape & Reel
T
Tape & Box
(Ammo Box)
1,000
1,000
1,000
1,000
1,000
N/A
5,000
5,000
2,500
2,000
1,000
5,000
5,000
2,000
2,000
1,000
1,000
2,000
Rev Date: 12/26/2013
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
3
www.seielect.com
marketing@seielect.com
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