PT657 NPN Transistor

The PT657 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the PT657 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The PT657 transistor symbol shows an arrow from the base into the emitter. This means that the current flows from collector terminal to emitter terminal.

Circuit diagram symbol of the PT657 transistor as follows.

PT657 Transistor Specification

Transistor Code		PT657
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO61
Collector Power Dissipation (Maximum)	PC	25W
Collector-Base Voltage (Maximum)	VCB	100V
Collector-Emitter Voltage (Maximum)	VCE	80V
Collector Current (Maximum)	IC	1.2A
Operating Junction Temperature (Maximum)	TJ	200°C
Forward Current Transfer Ratio (hFE Value)		15
Transition Frequency	FT	140MHz
Collector Capacitance	CC	30pF

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