Series CR
Precision Power Wirewound Resistors
,
ceramic carrier, coated, axial
Specifications
CR
251-0
W
Ω
Resistance range
Tolerances
Temperature coefficient
%
10
-6
*
K
-
1
VITROHM
Type
Nominal Power rating P
40
P
70
CR
252-0
2,0
1,6
CR
253-0
2,5
2,0
CR
254-0
3,0
2,5
CR
255-0
3,3
3,0
See Page 2
CR
256-0
4,0
3,5
CR
257-0
5,0
4,3
CR
258-0
5,5
5,0
CR
259-0
7,2
6,5
1,1
1,0
Rmin. …Rmax.: ±5, ±2, ±1; R≥ 1R: ±0,5
See Page 2
Max. working voltage
Insulation voltage (1min.)
Insulation resistance
Derating linear
Climatic category
Temperature range
Thermal resistance
Failure Rate
(Total,
ϑ
0
V
RMS
V
RMS
Ω
ºC
max 75 V
not insulated
70…350 (0W)
55/200/56
ºC
KW
-1
10
-9
h
-1
125
100
85
65
-55 ~ 350
55
65
48
45
35
appr. 100 depends on value
± 3,0 average
± 1,0
,
max, 60% cont. lev.)
[∆R/R]
%
[∆R/R]
%
Endurance (P
70 ,
70°C, 1000h)
Damp heat, steady state
(40° 93% r.h., 56d)
C,
Climatic sequence
(IEX 115-1/23)
Terminal strength
Terminal Tensile Strength
Resistance to soldering heat
(260° 3,5s)
C,
Solderability
Marking
[∆R/R]
%
± 1,0
[∆R/R]
%
± 0,2
40
50
± 0,2 typ.
2,5 Flowtime; solderglobule test, IEC 60068-2-20-T
Printed in clear
N
[∆R/R]
%
s
Revision 200906
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 CR
Dimensions in mm:
VITROHM
L
máx
d
∅
2
6
±1
Lackhosen
Coating residues
2
D
∅
6
±1
C
±1
Temperature Coeficient ( -20ºC to 120ºC )
500 +400 ppm/K
251-0
252-0
253-0
254-0
255-0
256-0
257-0
258-0
259-0
------
≥
0R022
≥
0R01
≥
0R01
≥
0R015
≥
0R02
≥
0R027
≥
0R033
≥
0R047
------
≤
0R033
≤
0R02
≤
0R027
≤
0R024
≤
0R03
≤
0R047
≤
0R062
≤
0R075
400 ± 50 ppm/K
≥
0R01
≥
0R036
≥
0R022
≥
0R03
≥
0R027
≥
0R033
≥
0R051
≥
0R068
≥
0R082
≤
0R024
≤
0R062
≤
0R047
≤
0R075
≤
0R062
≤
0R062
≤
0R082
≤
0R13
≤
0R15
appr. +180 ppm/K
≥
0R027
≥
0R068
≥
0R051
≥
0R082
≥
0R068
≥
0R068
≥
0R091
≥
0R15
≥
0R16
≤
0R091
≤
0R091
≤
0R091
≤
0R091
≤
0R091
≤
0R091
≤
0R13
≤
0R16
≤
0R24
0 ± 20 ppm/K
≥
0R1
≥
0R1
≥
0R1
≥
0R1
≥
0R1
≥
0R1
≥
0R15
≥
0R18
≥
0R27
≤
15R
≥
160R
≤
47R
≤
47R
≤
68R
≤
130R
≤
150R
≤
160R
≤
180R
0 ± 10 ppm/K
≥
16R
≥
180R
≥
51R
≥
51R
≥
75R
≥
150R
≥
160R
≥
180R
≥
200R
≤
220R
≤
470R
≤
750R
≤
750R
≤
1K0
≤
1K5
≤
2K2
≤
2K7
≤
3K9
Type
Type
CR251-0
CR252-0
CR253-0
CR254-0
CR255-0
CR256-0
CR257-0
CR258-0
CR259-0
*R
≤
1R0 Dmax. +1
L max
9,0
9,7
14,5
12,6
15,0
17,0
18,0
22,0
27,0
∅
D * max
3,0
4,0
4,5
5,5
8,5
5,5
8,5
8,5
8,5
∅
d
0,65
0,80
0,65
0,80
0,80
0,80
0,80
0,80
0,80
Packaging:
Type
CR251-0
CR252-0
CR253-0
CR254-0
CR255-0
CR256-0
CR257-0
CR258-0
CR259-0
Packaging
taped
taped
taped
taped
taped
taped
taped
taped
taped
Pieces
1000
1000
1000
1000
500
1000
500
500
500
Pack.-code
T
T
T
T
T
T
T
T
T
C
65
65
85
85
85
85
85
85
85
s
5
5
10
10
10
10
10
10
10
Ordering example:
CR259-0
Type
1
Tolerance
T
Pack-Code
10R
R- value
Revision 200906
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
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