THROUGH-HOLE RESISTORS
DIMENSIONS
Unit: mm
STYLE
DIMENSION
Normal
Miniature
L
øD
H
ød
CFR-12
CFR25S
3.4±0.3
1.9±0.2
28±2.0
0.45±0.05
CFR-25
CFR50S
6.3±0.5
2.4±0.2
28±2.0
0.55±0.05
CFR-50
CFR1WS
9.0±0.5
3.3±0.3
26±2.0
0.55±0.05
CFR100
CFR2WS
11.5±1.0
4.5±0.5
35±2.0
0.8±0.05
CFR200
CFR3WS
15.5±1.0
5.0±0.5
33±2.0
0.8±0.05
FEATURES
Power Rating
1/6W, 1/4W, 1/2W, 1W, 2W, 3W
Resistance Tolerance
±2%, ±5%
T.C.R.
see Table 1
DERATING CURVE
For resistors operated in ambient temperatures above 70°C, power rating must be derated
in accordance with the curve below.
TABLE 1
TEMPERATURE COEFFICIENT
STYLE
TEMP. COEFFICIENT (ppm/°C)
under 100K
Ω
100K
Ω
- 1M
Ω
1M
Ω
- 10M
Ω
CFR100, CFR200, CFR2WS, CFR3WS
-350~350
-500~0
-1,500~0
CFR-12, CFR-25, CFR-50,
CFR25S, CFR50S, CFR1WS
-350~500
-700~0
-1,500~0
ød
H
L
øD
INTRODUCTION
The CFR Series Carbon Film Resistors are
manufactured by coating a homogeneous
film of pure carbon on high grade ceramic
rods.
After a helical groove has been cut in
the resistive layer, tinned connecting leads of
electrolytic copper are welded to the end-caps.
The resistors are coated with layers of tan
color lacquer.
General Type
Normal & Miniature Style [ CFR Series ]
Carbon Film Resistors
Rated Load (%)
Ambient Temperature (°C)
160
140
120
100
80
60
40
100
80
60
40
20
20
70
155 °C
Note: RCWV(Rated Continuous Working Voltage) =
Power Rating x Resistance Value or Max. working voltage listed above, whichever less.
Revision: 201304
Note:
27
ELECTRICAL CHARACTERISTICS
STYLE
CFR-12
CFR25S
CFR-25
CFR50S
CFR-50
CFR1WS
CFR100
CFR2WS CFR200
CFR3WS
Power Rating at 70°C
1/6W
1/4W
1/2W
1W
2W
3W
Maximum Working Voltage
150V
200V
250V
300V
350V
400V
500V
Maximum Overload Voltage
300V
400V
500V
600V
700V
800V
1,000V
Voltage Proof on Insulation
300V
400V
500V
700V
1,000V
Resistance Range
1
Ω
- 10M
Ω
& 0
Ω
for E24 series value
Operating Temp. Range
-55°C to +155°C
Temperature CoefFcient
see Table 1
Note: Special value is available on request
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST
TEST METHOD
APPRAISE
Short Time Overload
IEC 60115-1 4.13
2.5 times RCWV for 5 Sec.
±0.75%+0.05
Ω
Voltage Proof on Insulation
IEC 60115-1 4.7
in V-block for 60 Sec., test voltage by type
By type
Temperature CoefFcient
IEC 60115-1 4.8
-55°C to +155°C
By type
Insulation Resistance
IEC 60115-1 4.6
in V-block for 60 Sec.
>1,000M
Ω
Solderability
IEC 60115-1 4.17
235±5°C for 3±0.5 Sec.
95% Min. coverage
Solvent Resistance of Marking
IEC 60115-1 4.30
IPA for 5±0.5 Min. with ultrasonic
No deterioration of
coatings and markings
Robustness of Terminations
IEC 60115-1 4.16
Direct load for 10 Sec. in the direction of the terminal leads
≥2.5kg (24.5N)
Periodic-pulse Overload
IEC 60115-1 4.39
4 times RCWV 10,000 cycles (1 Sec. on, 25 Sec. off)
±1.0%+0.05
Ω
Damp Heat Steady State
IEC 60115-1 4.24
40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV
±3.0%+0.05
Ω
Endurance at 70°C
IEC 60115-1 4.25
70±2°C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off)
±3.0%+0.05
Ω
Temperature Cycling
IEC 60115-1 4.19
-55°C
Room Temp.
+155°C
Room Temp. (5 cycles)
±1.0%+0.05
Ω
Resistance to Soldering Heat
IEC 60115-1 4.18
260±3°C for 10±1 Sec., immersed to a point 3±0.5mm from the body
±1.0%+0.05
Ω
88
EXPLANATIONS OF ORDERING CODE
EXCEPTION:
●Cement series:
●JPW series:
<Code 8>: Special packing style code
B: Bulk with wirewound or metal oxide sub-assembly for resistance value
W: Bulk with ceramic based wirewound sub-assembly for resistance value
M: Bulk with metal oxide sub-assembly for resistance value
F: Bulk with Fiberglass based wirewound sub-assembly for resistance value
<Code 10-12>:
Without forming code
Example:
SQP500J
B
-10R
<Code 13-17>: without resistance value code
Example:
JPW-06-T-52-
-12
Code 4 - 6
Power Rating
-05 = ød0.5mm
-06 = ød0.6mm
-07 = ød0.7mm
-08 = ød0.8mm
-10 = ød1.0mm
-14 = ød1.4mm
-12 = 1/6W
-25 = 1/4W
25S = 1/4WS
-50 = 1/2W
50S = 1/2WS
100 = 1W
1WS = 1WS
200 = 2W
2WS = 2WS
204 = 0.4W
207 = 0.6W
300 = 3W
3WS = 3WS
3WM = 3WM
400 = 4W
500 = 5W
5WS = 5WS
5SS = 5WSS
700 = 7W
7WS = 7WS
10A = 10W
20A = 20W
30A = 30W
40A = 40W
50A = 50W
10S = 10WS
15A = 15W
25A = 25W
10B = 100W
25B = 250W
F
Code 7
Tolerance
P = ±0.02 %
A = ±0.05 %
B = ±0.1 %
C = ±0.25%
D = ±0.5 %
F = ±1 %
G = ±2 %
J = ±5 %
K = ±10 %
- = Base on Spec.
T
Code 8
Packing Style
T = Tape/Box
R = Tape/Reel
B = Bulk
F
Code 9
Temperature Coef-
fcient oF Resistance
- = Base on Spec.
A = ±5 ppm/°C
B = ±10 ppm/°C
C = ±15 ppm/°C
S = ± 20ppm/°C
D = ±25 ppm/°C
E = ±50 ppm/°C
F = ±100 ppm/°C
G = ±200 ppm/°C
H = ±250 ppm/°C
I = ±300 ppm/°C
J = ±350 ppm/°C
52-
Code 10 - 12
Forming Type
26- = 26mm
52- = 52.4mm
73- = 73mm
81- = 81mm
91- = 91mm
F = F Type
FK = FK Type
FKK = FKK Type
FFK = F-form Kink
M = M-Type Forming
MB = M-form W/²at
MT = MT Type Forming
MR = MR Type
AV = AVIsert
PN = PANAsert
100R
Code 13 - 17
Resistance Value
0R1 = 0.1
100R = 100
10K = 10,000
10M = 10,000,000
MFR
Code 1 - 3
Series Name
See Index