DATA SHEET
LEADED POWER RESISTORS
U
P TO
7.2 W
CR - PRECISION wirewound, down to 0.25% tolerance
Product Specification - Jun. 18, 2003 V.0
Series CR
Precision Power Wirewound resistors
axial, ceramic carrier, coated
Specification
Type
Power rating
ϑ
0
= 235°C
Resistance range
Tolerance
Temperature coefficient
working voltage
Insulation voltage (1min.)
%
10
-6
∗
K
-1
V
RMS
V
RMS
Ω
°C
P
40
P
70
W
CR251-0 CR253-0 CR254-0 CR255-0 CR256-0 CR257-0 CR258-0 CR259-0
1,1
1,0
2,2
2,0
3,0
2,5
3,3
3,0
4,0
3,5
5,0
4,3
5,5
5,0
7,2
6,5
see Page 2
Rmin. ... Rmax..: ± 5, ± 2, ± 1; R > 1R0: ± 0,5
_
0 ± 20
P
70
•
R
max. 75V
Insulation resistance
Derating linear
Climatic category
Temperature range
Thermal resistance
Failure rate
(Total,
ϑ
0
max., 60% conf. lev.)
Endurance
(P
70
, 70°C, 1000h, intm.)
Damp heat, steady state
(40°C, 93% r. h., 56d)
Climatic sequence
(IEC 115-1/23)
Resistance to soldering heat
(260°C, 10s, 3mm)
Solderability
Terminal strength
Terminal tensile strength
Marking
not insulated
70 ... 350 (0W)
55/200/56
°C
KW
-1
10
-9
∗
h
-1
∆R
%
R
∆R
%
R
∆R
%
R
∆R
R
s
∆R
R
N
%
%
280
140
112
- 55 ... 350
94
80
65
56
43
appr. 10, depends on value
± 3,0 average
± 1,0
± 1,0
± 0,2 typ.
2,5 Flowtime, solderglobule test, IEC 60068-2-20
± 0,2
50
printed in clear
Yageo Europe GmbH Ramskamp 70 D-25337 Elmshorn Germany T.: +49 4121 870-0 F.: +49 4121 870-297
File: CR_E_108 (07)
29.04.03
Page 1 of 3
Series CR
Precision Power Wirewound resistors
axial, ceramic carrier, coated
Type
Resistance range
min.
max.
82R
360R
360R
470R
750R
1K1
1K3
2K
Temperature Coefficient
(-20 °C to +120 °C)
CuNi44
0±20 ppm/K
_
> R50
_
> R10
_
> R10
_
> R10
_
> R15
_
> R20
_
> R20
_
> R30
< 62R
< 160R
< 160R
< 220R
< 330R
< 430R
< 430R
< 800R
NiCr20AlSi
0±10 ppm/K
_
> 62R
_
> 160R
_
> 160R
_
> 200R
_
> 330R
_
> 430R
_
> 430R
_
> 800R
_
< 82R
_
< 360R
_
< 360R
_
< 470R
_
< 750R
_
< 1K1
_
< 1K3
_
< 2K0
CR251-0
CR253-0
CR254-0
CR255-0
CR256-0
CR257-0
CR258-0
CR259-0
Dimensions in mm:
0R1
0R1
0R1
0R1
0R1
0R2
0R2
0R3
Type
L
max.
9,0
14,5
12,6
15,0
17,0
18,0
22,0
27,0
Dmax. +1
øD
*
max.
3,0
4,0
5,5
8,5
5,5
8,5
8,5
8,5
ød
CR251-0
CR253-0
CR254-0
CR255-0
CR256-0
CR257-0
CR258-0
CR259-0
0,65
0,65
0,80
0,80
0,80
0,80
0,80
0,80
*
R < 1R0
_
Yageo Europe GmbH Ramskamp 70 D-25337 Elmshorn Germany T.: +49 4121 870-0 F.: +49 4121 870-297
File: CR_E_108 (07)
29.04.03
Page 2 of 3
Series CR
Precision Power Wirewound resistors
axial, ceramic carrier, coated
Packaging:
Type
Packaging
Pieces
Pack.-Code
CR251-0
CR253-0
CR254-0
CR255-0
CR256-0
CR257-0
CR258-0
CR259-0
taped
taped
taped
taped
taped
taped
taped
taped
1000
1000
1000
500
1000
500
500
500
T
T
T
T
T
T
T
T
Ordering example: CR 259-0
Type
1
Tolerance
T
Pack.-Code
10R
R-Value
Yageo Europe GmbH Ramskamp 70 D-25337 Elmshorn Germany T.: +49 4121 870-0 F.: +49 4121 870-297
File: CR_E_108 (07)
29.04.03
Page 3 of 3
