Series BW
Insulated Wirewound Resistors, moulded
Specifications
Type
Style
Power rating P
70
Resistance range
E-Series
Tolerances
Temperature coefficient
max. cont. work. voltage
Insulation voltage (1min.)
Insulation resistance
Derating linear
Climatic category
Temperature range
Thermal resistance
Failure rate
(Total,
ϑ
o
max., 60% conf. lev.)
Endurance
(P
70
, 1000h)
Damp heat, steady state
(40
o
C, 93% r.h., 56d)
Climatic sequence
Terminal strength
Terminal tensile strength
Resistance to soldering heat
(260
o
C, 10s)
Solderability
Marking
o
VITROHM
BW234-0
0411
W
Ω
0,75 (P
50
= 1,0)
0R1 ... 1K2
E 24, E 12
%
10
-6
* K
-1
V
RMS
V
RMS
Ω
o
BW235-0
0614
1,5 (P
25
= 2,0)
0R1 ... 2K4
± 5, ± 10
see table next page
√
P
700
70
·R
1000
> 10
4
M
70 ... 175 (0W)
55/175/56
C
C
140
- 55 ... 175
80
KW
-1
10
-9
* h
-1
appr. 100, depends on value
± 5,0 average
[
∆R
]
%
R
[
∆R
]
%
R
[
∆R
]
%
R
[
∆R
]
%
R
N
± 2,0
± 2,0
±1
40
± 0,2 typ.
2,5 Flowtime, solderglobule test, IEC 60068-2-20-T
DIN-IEC-colour code, 4 bands
[
∆R
]
%
R
s
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:
VITROHM
d
73
85
±1
*
Temperature coefficient
Typ
resistance
Value
0R1 ... 0R15
0R16 ... 0R62
0R68 ... 1K2
D
TC
* 10
-6
K
-1
BW234-0
±
600
±
300
±
150
±
1000
±
800
±
400
BW235-0
0R1
... 0R16
0R18 ... 0R68
0R75 ...
2K4
Type
BW234-0
BW235-0
L
±
0,2
9,9
14,3
Ø
D
±
0,2
3,6
5,7
Ø
d
±
0,02
0,8
1,0*
Tape step
5
10
*Special lead diameter 0,8 mm available, type BW 235-006
Packaging:
Type
BW234-0
BW235-0
Packaging
taped/Ammopack
taped/Ammopack
Pieces
1000
1000
Pack.Code
T
T
Ordering example:
BW 234-0
Type
5
Tolerance
T
Pack.-Code
1K
R-Value
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
VITROHM
P
≤
P
70
1
µ ≤
ti
≤
100 ms'
[Ws]
5
4
Pulse energy
(Im pulsenergie)
235 - 0
3
2
234 - 0
1
0.5
0
[Ω]
0.1
1.0
10
100
1000
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!)
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
