BUL128D NPN Transistor

The BUL128D is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BUL128D transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BUL128D 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 BUL128D transistor as follows.

BUL128D Transistor Specification

Transistor Code		BUL128D
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO220
Collector Power Dissipation (Maximum)	PC	2W
Collector-Base Voltage (Maximum)	VCB	700V
Collector-Emitter Voltage (Maximum)	VCE	400V
Collector Current (Maximum)	IC	4A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	9V
Forward Current Transfer Ratio (hFE Value)		8

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