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www.tlcet.com.cn www.winvast.cn
Document No.:T30034
WSFD Series is a three terminals surface
mountable battery protector that can protect against
both overcurrent and overcharging.It comprises a fuse
element to ensure stable operation under normal
electrical current and to cut off the current when
overcurrent occurs.It also comprises a resistive heating
element that could be used in combination with a
voltage detecting means, such as IC and FET. When
overvoltage is detected, it will generate heat to blow
the fuse to achieve overvoltage protection.
Halogen Free
Protection for both overcurrent and overcharging
Surface Mount
Fast response
UL file:E467707
Electrical Characteristics
Part
Number
I
rated
(A)
Cell In
Series
V
max
(Vdc)
I
break
(A)
V
op
(V)
Resistance Agency Approvals
R
fuse
(mΩ)
WSFD4550 45 13-14 80 120 43.7-62.0 0.7-2.0
Current Capacity 100% x I
rated
, No Melting
Cut Time 200% x I
rated
, < 1 min
Interrupting Current
100A, power on 5 ms, power off 995 ms, 10000 cycles (WSFD9550 30A series)
150A, power on 5 ms, power off 995 ms, 10000 cycles (WSFD9550 45A series), No
Melting
Over Voltage Operation In operation voltage range, the fusing time is <1min