MMBT4258 PNP Transistor

The MMBT4258 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the MMBT4258 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The MMBT4258 transistor symbol shows an arrow from the emitter into the base. This means that the current flows from emitter to collector terminal.

Circuit diagram symbol of the MMBT4258 transistor as follows.

MMBT4258 Transistor Specification

Transistor Code		MMBT4258
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO236
Transistor SMD Code		78
Collector Power Dissipation (Maximum)	PC	0.2W
Collector-Base Voltage (Maximum)	VCB	12V
Collector-Emitter Voltage (Maximum)	VCE	12V
Collector Current (Maximum)	IC	0.05A
Operating Junction Temperature (Maximum)	TJ	125°C
Emitter-Base Voltage (Maximum)	VEB	4V
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	700MHz
Collector Capacitance	CC	3pF

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