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BD258 PNP Transistor

The BD258 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the BD258 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BD258 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 BD258 transistor as follows.

Circuit diagram symbol of the BD258 transistor

BD258 Transistor Specification

Transistor Code BD258
Transistor Type BJT
Transistor Polarity PNP
Transistor Material Silicon(SI)
Package TOP3
Collector Power Dissipation (Maximum) PC 125W
Collector-Base Voltage (Maximum) VCB 45V
Collector-Emitter Voltage (Maximum) VCE 45V
Collector Current (Maximum) IC 25A
Operating Junction Temperature (Maximum) TJ 150°C
Forward Current Transfer Ratio (hFE Value) 10
Transition Frequency FT 3MHz

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