Series CRF
Power Wirewound Resistors
,
Flame retardant, safety version
VITROHM
UL Recognized
(UL 1412, fusing and temp. limited resistors, file E 330640)
Specifications
CRF
253-8
W
Ω
2,2
2,0
CRF
254-8
3,0
2,5
See Page 2
E24
%
10
-6
*
K
-1
V
RMS
V
RMS
Ω
ºC
max 75 V
not insulated
70…350 (0W)
55/350/56
ºC
KW
-1
10
-9
h
-1
[∆R/R]
%
[∆R/R]
%
[∆R/R]
%
[∆R/R]
%
N
[∆R/R]
%
s
85
-55 … 350
65
appr. 10 depends on value
± 5,0 average
± 5,0
± 2,0
± 0,2
50
± 0,5
2,5 Flowtime; solderglobule test, IEC 60068-2-20
Printed in clear
65
±1 , ±2 , ±5
120
±50
Type
Nominal Power rating P
40
P
70
Resistance range
E-Series
Tolerances
Temperature coefficient
Max. working voltage
Insulation voltage (1min.)
Insulation resistance
Derating linear
Climatic category
Temperature range
Thermal resistance
Failure Rate
(Total,
ϑ
0
, max, 60% cont. lev.)
Endurance (P
70 ,
70°C, 1000h)
Damp heat, steady state
(40° 93% r.h., 56d)
C,
Climatic sequence
Terminal strength
Terminal Tensile Strength
Resistance to soldering heat
(260° 10s)
C,
Solderability
Marking
CRF
256-8
4,0
3,5
Revision 200910
VITROHM PORTUGUESA, Lda. – Est. Nacional 249-4, Trajouce – 2765-653 S. Domingos de Rana – PORTUGAL
Tel:+ 351 214 457 700 - Fax:351 214 457 755 – Germany Sales Tel:+ 0049 4121 870 103 - e-mail:vitrohm.support@yageo.com – www.vitrohm.com
Series CRF
Type
CRF253-8
CRF254-8
CRF256-8
CRF253-8
CRF254-8
CRF256-8
UL – Voltage rating
230 V
230 V
230 V
120 V
120 V
120 V
Resistance range
10R … 330R
10R … 330R
10R … 330R
10R … 90R
10R … 90R
10R … 90R
VITROHM
Note: Resistors are designed to fuse safety when mains-voltage is applied.
In accordance with UL-testing fusing-characteristics are as shown below
1000
F u s in g t im e .( s e g )
100
253-8
254-8
256-8
10
1
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
Pow.(W)
10R
25x
10R
25x
10R
5%
8
5%
8
5%
6
±1
2
Lackhosen
Coating residues
2
6
±1
C
±1
Type
CRF253-8
CRF254-8
CRF256-8
*R <10R Dmax. +1
Packaging:
Type
CRF253-8
CRF254-8
CRF256-8
Ordering example:
CRF254-8
Type
Packaging
Taped/Ammopack
Taped/Ammopack
Taped/Ammopack
5
Tolerance
Pieces
1000
1000
1000
Pack.-code
T
T
T
15R
R- value
Revision 200910
VITROHM PORTUGUESA, Lda. – Est. Nacional 249-4, Trajouce – 2765-653 S. Domingos de Rana – PORTUGAL
Tel:+ 351 214 457 700 - Fax:351 214 457 755 – Germany Sales Tel:+ 0049 4121 870 103 - e-mail:vitrohm.support@yageo.com – www.vitrohm.com
L
max
14,5
12,5
17,0
∅
D*
max
4,5
6,0
6,0
∅
d
0,65
0,80
0,80
C
85
85
85
s
10
10
10
T
Pack-Code
S
±0.5
Dimensions in mm :
d
L
máx
25x
8
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