Resettable fuse SMD1206P005TF

Resettable fuse SMD1206P005TF

Product description:

Since the resumption of fuses (hereinafter referred to as fuse) made of a polymer resin matrix and conductive particles distributed inside the composition, under normal circumstances, the conductive particles constituting the chain conductive path in a resin matrix, fuse showed low impedance (a). Circuit There are over current occurs when heat flows generated by a large current fuse the polymer resin matrix volume expansion, cutting off the chain of conductive particles form a conductive path, leading to a rapid increase in the impedance of the fuse, which play on the circuit overcurrent Protective effects of (b). After troubleshooting, the resin re-cooling and crystallization, the volume contraction, the conductive particles form a conductive path again, returns to a low impedance fuse.
Resettable fuse parameters

Since the resumption of fuses in the selection process, mainly related to the following parameters

1. Maintain current (Ih): 25 ℃ still air resistance without triggering sharp increase in the maximum current.
2. Trigger Current (It): 25 ℃ still air PTC polymer resettable fuse from the low resistance into the minimum current high impedance.
3. The maximum voltage (Vmax): PTC polymer resettable fuse maximum operating voltage.
4. The maximum current (Imax): PTC polymer resettable fuse can withstand maximum current.
5. Action power (Pdtyp.): 25 ℃ ambient temperature when the power consumption of polymer PTC resettable fuse operation state.
6. Action time (Ttrip): 5 times the maximum operating time keeping current.
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Professional production and sales: ESD static impedance device, chip varistor, varistors, thermistors, transient suppression diodes, rectifier diodes, ceramic discharge tube, glass discharge tube, semiconductor discharge tube, since the resumption of fuses, ESD electrostatic diode.
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