PTC Resettable Fuses
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— IC芯片 | 连接器 | 传感器 | 被动器件 —

PTC Resettable Fuses are designed to stop current flow when it exceeds a certain limit (overcurrent protection). The Fuses work by increasing its resistance as its temperature rises due to the current increase. The trip current ranges from 14 mA to 50 A with the Time to trip ranging from 8 ms to 90 s. PTC = Positive Temperature Coefficient.
| Select products | Mfr | Description | Package | Supplier Device Package | Mounting Type | Series | Operating Temperature |
|---|---|---|---|---|---|---|---|
![]() MICROSMD250LR-A-2 $0.73 | Littelfuse Inc. | PTC RESET FUSE 6V 2.5A 1210 | Tape & Reel (TR),Cut Tape (CT) | Surface Mount | PolySwitch®, LoRho | - | |
![]() MICROSMD350LR-2 $0.73 | Littelfuse Inc. | PTC RESET FUSE 6V 3.5A 1206 | Tape & Reel (TR),Cut Tape (CT) | Surface Mount | PolySwitch®, microSMD | - | |
![]() MICROSMD350LR-D-2 $0.73 | Littelfuse Inc. | PTC RESET FUSE 6V 3.5A 1206 | Tape & Reel (TR),Cut Tape (CT) | Surface Mount | PolySwitch®, microSMD | -40°C ~ 80°C | |
![]() MICROSMD380LR-2 $0.73 | Littelfuse Inc. | PTC RESET FUSE 6V 3.8A 1206 | Tape & Reel (TR),Cut Tape (CT) | Surface Mount | PolySwitch®, microSMD | -40°C ~ 80°C | |
![]() MICROSMD400LR-2 $0.73 | Littelfuse Inc. | PTC RESET FUSE 6V 4A 1206 | Tape & Reel (TR),Cut Tape (CT) | Surface Mount | PolySwitch®, microSMD | -40°C ~ 80°C | |
![]() MICROSMD450LR-2 $0.73 | Littelfuse Inc. | PTC RESET FUSE 5V 4.5A 1210 | Tape & Reel (TR),Cut Tape (CT) | Surface Mount | PolySwitch®, microSMD | -40°C ~ 80°C | |
![]() MICROSMD450LR-C-2 $0.30 | Littelfuse Inc. | PTC RESET FUSE 12V 4.5A 1206 | Tape & Reel (TR) | Surface Mount | PolySwitch®, LoRho | -20°C ~ 85°C | |
| Littelfuse Inc. | PTC RESET FUSE 12V 4.5A 1206 | Tape & Reel (TR) | - | * | - |