POLYMER RESETTABLE FUSE
SMD2920 Series
Trustworthy electronic circuit protection expert
SMD2920 Series
Features
Smaller size saves board space and cost
Resettable circuit protection
Fast time-to-trip
Low resistance
Surface mount packaging for automated assembly
Lead-free and compliant with the European Union RoHS Directive 2002/95/EC
Application
●Polymer Resettable Fuse for over-current, over-temperature and short-circuit protection
●Computer motherboards
●IEEE1394 Ports
●USB hub, ports and peripherals
●Data communication
●Modems/ Ethernet/LAN
General Description
●Polymer resettable fuse are made of polymeric PTC materials which is a matrix of
●polymer containing dispersed conductive particles. Generally, the device has a very
●low resistance. If an over-current happened, as a response to the damage current,
●the resistance will immediately increase to very high, reducing the current of the
●circuit to a safe value that the loading can carry. Once fault to the circuit is weed out
●and power is recuperated, the polymer will deflate itself , the device will reset and is
●ready for normal operation.
Product Dimensions (mm)
A
B
C
D
Min.
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
型号
Min.
6.73
6.73
6.73
6.73
6.73
6.73
6.73
6.73
6.73
6.73
6.73
Max.
7.98
7.98
7.98
7.98
7.98
7.98
7.98
7.98
7.98
7.98
7.98
Min.
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
Max.
5.44
5.44
5.44
5.44
5.44
5.44
5.44
5.44
5.44
5.44
5.44
1
Min.
0.6
0.6
0.6
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3
Max.
1.15
1.15
1.15
1.00
0.90
0.90
0.90
0.90
0.90
0.90
0.90
SMD2920-030
SMD2920-050
SMD2920-075
SMD2920-100
SMD2920-125
SMD2920-150
SMD2920-185
SMD2920-200
SMD2920-250
SMD2920-260
SMD2920-300
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Rev:19.3