Through-hole resisTors
General Type
Carbon Film Resistors
Normal & Miniature Style [ CFR Series ]
FeATꢄꢅes
Power Rating
ResistanceTolerance
T.C.R.
1/6W, 1/4W, 1/2W, 1W, 2W, 3W
±2%, ±5%
seeTable 1
DeꢅATiNg CꢄꢅVe
For resistors operated in ambient temperatures above 70°C, power rating must be derated
in accordance with the curve below.
iNTꢅoDꢄCTioN
70
155 °C
Rated Load (%)
100
80
60
40
20
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.
Ambient Temperature (°C)
20 40 60 80 100 120 140 160
TABle 1 TeMPeꢅATꢄꢅe CoeFFiCieNT
sTYle
TeMP. CoeFFiCieNT (ppm/°C)
undꢃr 100KΩ 100K Ω - 1MΩ
1MΩ - 10MΩ
CFR100, CFR200, CFR2WS, CFR3WS -350~350
-500~0
-700~0
-1,500~0
CFR-12, CFR-25, CFR-50,
-350~500
CFR25S, CFR50S, CFR1WS
-1,500~0
DiMeNsioNs
Unit: mm
sTYle
Nꢀrmaꢁ
CFR-12
CFR-25
CFR-50
CFR100
CFR200
DiMeNsioN
l
Mꢂnꢂaturꢃ
CFR25S
øD
h
ød
3.4±0.3
6.3±0.5
9.0±0.5
11.5±1.0
15.5±1.0
1.9±0.2
2.4±0.2
3.3±0.3
4.5±0.5
5.0±0.5
28±2.0
28±2.0
26±2.0
35±2.0
33±2.0
0.45±0.05
0.55±0.05
0.55±0.05
0.8±0.05
0.8±0.05
ød
CFR50S
H
L
øD
CFR1WS
CFR2WS
CFR3WS