Spot supply Polytronics SMD1812P075TF / 33

Spot supply Polytronics SMD1812P075TF / 33

Product description:

Contact: Miss Tel: 13534079884 landline: 0755-36936813 QQ: 1660241460 Tradelink: ashun495

PPTC Principle

PPTC (Hereinafter referred to as fuses) made of a polymer resin matrix and conductive particles distributed in the inside of the composition, under normal circumstances, the conductive particles constituting the conductive path chain in the resin matrix, the fuse showed low impedance (a). Overcurrent circuit occurs, the heat flows through the fuse of a large current generated by the polymer resin matrix volume expansion, cut off the chain of conductive particles form a conductive path, leading to a rapid increase in the impedance of the fuse, and thus play a role in over-current protection circuit of ( b). 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. Hold Current ( Ih): 25 ℃ still air resistance without triggering the sharp increase of 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.
The maximum current ( Imax): PTC polymer resettable fuse can withstand maximum current.
5. Action Power ( Pdtyp):. At 25 ℃ ambient temperature of the power consumption of polymer PTC resettable fuse operation state.
6. operating time ( Ttrip): 5 times the maximum operating time keeping current.

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SMD1210P075TF SMD1210P110TF SMD1210P150TF SMD1812P010TF
SMD1812P014TF SMD1812P020TF SMD1812P050TF SMD1812P075TF
SMD1812P075TF / 24 SMD1812P075TF / 33 SMD1812P110TF SMD1812P110TF / 16
SMD1812P110TF / 24 SMD1812P110TF / 33 SMD1812P125TF / 16 SMD1812P125TF / 64L
SMD1812P150TF / 8 SMD1812P150TF / 12 SMD1812P150TF / 24 SMD1812P160TF / 8 (4L)
SMD1812P200TF SMD1812P260TF SMD1812P300TF SMD2016P030TF
SMD2016P050TF SMD2016P100TF SMD2016P100TF / 33 SMD2016P150TF
SMD2016P200TF SMD2920P030TF SMD2920P050TF SMD2920P075TF
SMD2920P100TF SMD2920P125TF SMD2920P150TF SMD2920P185TF
SMD2920P200TF SMD2920P200TF / 24 SMD2920P250TF SMD2920P260TF
SMD2920P300TF SMD2920P300TF / 15

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.

Contact: Miss Tel: 13534079884 landline: 0755-36936813 QQ: 1660241460 Tradelink: ashun495