MD990 PNP Transistor

The MD990 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the MD990 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The MD990 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 MD990 transistor as follows.

MD990 Transistor Specification

Transistor Code		MD990
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO77
Collector Power Dissipation (Maximum)	PC	0.6W
Collector-Base Voltage (Maximum)	VCB	50V
Collector-Emitter Voltage (Maximum)	VCE	35V
Collector Current (Maximum)	IC	0.6A
Operating Junction Temperature (Maximum)	TJ	200°C
Forward Current Transfer Ratio (hFE Value)		50
Transition Frequency	FT	60MHz
Collector Capacitance	CC	45pF

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