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