2SD128 NPN Transistor

The 2SD128 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2SD128 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2SD128 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 2SD128 transistor as follows.

2SD128 Transistor Specification

Transistor Code		2SD128
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-Emitter Voltage (Maximum)	VCE	30V
Collector Current (Maximum)	IC	0.5A
Operating Junction Temperature (Maximum)	TJ	175°C
Emitter-Base Voltage (Maximum)	VEB	12V
Forward Current Transfer Ratio (hFE Value)		40
Transition Frequency	FT	1MHz

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