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Features
• Small compact size • Resettable switching device • Low current loss due to a low resistance in normal use • Protection against overcurrent and short circuit The PolySwitch device is a resettable switching device made from a polymer blend. The mode of action is based on the PTC effect. In standard use, the resistance of the PolySwitch device is very low so that only a small power loss arises. In the event of an error, e.g. short-circuit or overcurrent, the resistance value of this device increases and protects the equipment. After eliminating the error and switching off the supply voltage, the PolySwitch device quickly returns to a low impedance state.
Application
These components are ideal for use in PC cards for computer telecom applications and general electronics.
Technical Specifications
Part Nr.
IN
VMax
R1MJax
tA Max.
[A]
[V]
[Ohm]
[A/s]
SMD030F-2
0,3
60
4,80
1,5/3
SMD050F-2
0,5
60
1,40
2,5/4
SMD075F-2
0,75
30
1,00
8/0,3
SMD100F-2
1,1
30
0,48
8/0,5
SMD125F-2
1,25
15
0,25
8/2
SMD150F-2
1,5
15
0,25
8/5
SMD185F-2
1,85
33
0,15
8/5
SMD200F-2
2,0
15
0,125
8/12
SMD250F-2
2,5
15
0,085
8/25
SMD300F-2
3
6
0,048
8/35
IN = Rated Current, R1Max = 1 Hour Post-Trip Resistance Standard Trip, tTrip Current = Minimum Current a Device will Trip at Given Reference Current IS, All Data for Ambient Temperature at 20°C
Dimensions
Part Nr.
AMax
BMax
CMax
DMin
EMin
FMin
[mm]
[mm]
[mm]
[mm]
[mm]
[mm]
SMD030F-2
7,98
3,18
5,44
0,56
0,56
2,16
SMD050F-2
7,98
3,18
5,44
0,56
0,20
2,16
SMD075F-2
7,98
3,18
5,44
0,56
0,56
2,16
SMD100F-2
7,98
3,0
4,8
0,56
0,56
2,16
SMD125F-2
7,98
3,0
4,8
0,56
0,56
2,16
SMD150F-2
9,4
3,0
6,0
0,56
0,56
3,68
SMD185F-2
9,4
3,0
6,71
0,56
0,56
3,68
SMD200F-2
9,4
3,0
6,71
0,56
0,56
3,68
SMD250F-2
9,4
3,0
6,71
0,56
0,56
3,68
SMD300F-2
7,98
3,0
5,44
0,56
0,56
2,16
Hinweis
• These components are protected against overcurrent and overtemperature; not for continuous repeatable switching operations. • The valid VDE regulations must be observed when handling products which come into contact with electrical voltage.
