2SD128A NPN Transistor

The 2SD128A is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2SD128A transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2SD128A 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 2SD128A transistor as follows.

2SD128A Transistor Specification

Transistor Code		2SD128A
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Germanium(GE)
Package		TO1
Collector Power Dissipation (Maximum)	PC	0.25W
Collector-Base Voltage (Maximum)	VCB	32V
Collector Current (Maximum)	IC	0.5A
Operating Junction Temperature (Maximum)	TJ	175°C
Forward Current Transfer Ratio (hFE Value)		46
Transition Frequency	FT	1MHz

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