DATA SH
E
E
T
LEADED POWER RESISTORS
CR - PRECISION wirewound, down to 0.25% tolerance
UP TO 7.2 W
Product Specification - Jun. 18, 2003 V.0
Specification
Type CR251-0 CR253-0 CR254-0 CR255-0 CR256-0 CR257-0 CR258-0 CR259-0
Power rating P40
ϑ0 = 235°C P70
W1,1
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
Resistance range see Page 2
Tolerance %Rmin. ... Rmax..: ± 5, ± 2, ± 1; R >_ 1R0: ± 0,5
Temperature coefficient 10-6 ∗ K-1 0 ± 20
working voltage VRMS
Insulation voltage (1min.) VRMS max. 75V
Insulation resistance Ωnot insulated
Derating linear °C 70 ... 350 (0W)
Climatic category 55/200/56
Temperature range °C - 55 ... 350
Thermal resistance KW-1 280 140 112 94 80 65 56 43
Failure rate
(Total, ϑ0 max., 60% conf. lev.) 10-9 ∗ h-1 appr. 10, depends on value
Endurance
(P70, 70°C, 1000h, intm.) %± 3,0 average
Damp heat, steady state
(40°C, 93% r. h., 56d) %± 1,0
Climatic sequence
(IEC 115-1/23) %± 1,0
Resistance to soldering heat
(260°C, 10s, 3mm) %± 0,2 typ.
Solderability s2,5 Flowtime, solderglobule test, IEC 60068-2-20
Terminal strength %± 0,2
Terminal tensile strength N50
Marking 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
P70 •R
∆
R
R
∆
R
R
∆
R
R
∆
R
R
∆
R
R
Type Resistance range Temperature Coefficient (-20 °C to +120 °C)
min. max. CuNi44
0±20 ppm/K NiCr20AlSi
0±10 ppm/K
CR251-0 0R1 82R >_ R50 < 62R >_ 62R <_ 82R
CR253-0 0R1 360R >_ R10 < 160R >_ 160R <_ 360R
CR254-0 0R1 360R >_ R10 < 160R >_ 160R <_ 360R
CR255-0 0R1 470R >_ R10 < 220R >_ 200R <_ 470R
CR256-0 0R1 750R >_ R15 < 330R >_ 330R <_ 750R
CR257-0 0R2 1K1 >_ R20 < 430R >_ 430R <_ 1K1
CR258-0 0R2 1K3 >_ R20 < 430R >_ 430R <_ 1K3
CR259-0 0R3 2K >_ R30 < 800R >_ 800R <_ 2K0
Dimensions in mm:
Type L
max. øD *
max.
ød
CR251-0 9,0 3,0 0,65
CR253-0 14,5 4,0 0,65
CR254-0 12,6 5,5 0,80
CR255-0 15,0 8,5 0,80
CR256-0 17,0 5,5 0,80
CR257-0 18,0 8,5 0,80
CR258-0 22,0 8,5 0,80
CR259-0 27,0 8,5 0,80
* R <_ 1R0 Dmax. +1
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 taped 1000 T
CR253-0 taped 1000 T
CR254-0 taped 1000 T
CR255-0 taped 500 T
CR256-0 taped 1000 T
CR257-0 taped 500 T
CR258-0 taped 500 T
CR259-0 taped 500 T
Ordering example: CR 259-0 1 T10R
Type Tolerance Pack.-Code 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
Series CR
Precision Power Wirewound resistors
axial, ceramic carrier, coated
