Revision 200807
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
Style
0411
0614
Power rating P
70
W
0,75 (P
50
= 1,0)
1,5 (P
25
= 2,0)
Resistance range
Ω
0R1 ... 1K2
0R1 ... 2K4
E-Series
E 24, E 12
Tolerances
%
± 5, ± 10
Temperature coefficient
10
-6
* K
-1
see table next page
max. cont. work. voltage
V
RMS
√
P
70
· R
Insulation voltage (1min.)
V
RMS
700
1000
Insulation resistance
Ω
> 10
4
M
Derating linear
o
C
70 ... 175 (0W)
Climatic category
55/175/56
Temperature range
o
C
- 55 ... 175
Thermal resistance
KW
-1
140
80
Failure rate
(Total,
ϑ
o
max., 60% conf. lev.)
10
-9
* h
-1
appr. 100, depends on value
Endurance
(P
70
, 1000h)
%
± 5,0 average
Damp heat, steady state
(40
o
C, 93% r.h., 56d)
%
± 2,0
Climatic sequence
%
± 2,0
Terminal strength
%
± 1
Terminal tensile strength
N
40
Resistance to soldering heat
(260
o
C, 10s)
%
± 0,2 typ.
Solderability
s 2,5 Flowtime, solderglobule test, IEC 60068-2-20-T
Marking
DIN-IEC-colour code, 4 bands
Series BW
Insulated Wirewound Resistors, moulded
Specifications
BW234-0
BW235-0
Type
[
∆
R
]
R
[
∆
R
]
R
[
∆
R
]
R
[
∆
R
]
R
[
∆
R
]
R
VITROHM
Revision 200807
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 BW
Dimensions in mm:
Ordering example:
BW 234-0
5
T
1K
Type
Tolerance Pack.-Code
R-Value
Packaging:
Type
Packaging
Pieces
Pack.Code
BW234-0
taped/Ammopack
1000
T
BW235-0
taped/Ammopack
1000
T
Typ
resistance
TC
Value
* 10
-6
K
-1
BW234-0
0R1 ... 0R15
±
600
0R16 ... 0R62
±
300
0R68 ... 1K2
±
150
BW235-0
0R1 ... 0R16
±
1000
0R18 ... 0R68
±
800
0R75 ... 2K4
±
400
Type
L
±
0,2
Ø
D
±
0,2
Ø
d
±
0,02
Tape step
BW234-0
9,9
3,6
0,8
5
BW235-0
14,3
5,7
1,0*
10
*Special lead diameter 0,8 mm available, type BW 235-006
Temperature coefficient
85
±1
73
D
d
*
VITROHM
Revision 200807
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 BW PULSE RATING
Resistance value
(Widerstandswert)
The curves are expressing the range, where no substantial effects are caused of recurrent pulses.
(Die Kurven geben den Bereich an, in dem wiederholte impulse keine merklichen Effekte am
Widerstand hervorrufen.)
A single pulse with a 3 – 5 times higher value will cause the destruction of the resistor!
(Ein Einzelimpuls mit 3 – 5 fachem Wert führt zur Zerstörung des Widerstandes!)
[Ws]
5
4
3
2
1
0.5
P
u
ls
e e
ner
gy
(I
m
p
u
ls
e
n
e
rg
ie
)
0
[
Ω
] 0.1 1.0 10 100 1000
235 - 0
234 - 0
P
≤
P
70
1
µ ≤
ti
≤
100
ms'
VITROHM