ST9 NPN Transistor

The ST9 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the ST9 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The ST9 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 ST9 transistor as follows.

ST9 Transistor Specification

Transistor Code		ST9
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO5
Collector Power Dissipation (Maximum)	PC	0.15W
Collector-Emitter Voltage (Maximum)	VCE	15V
Collector Current (Maximum)	IC	0.05A
Operating Junction Temperature (Maximum)	TJ	175°C
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	20MHz
Collector Capacitance	CC	3pF

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