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BF591 NPN Transistor

The BF591 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BF591 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BF591 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 BF591 transistor as follows.

Circuit diagram symbol of the BF591 transistor

BF591 Transistor Specification

Transistor Code BF591
Transistor Type BJT
Transistor Polarity NPN
Transistor Material Silicon(SI)
Package TO202
Collector Power Dissipation (Maximum) PC 1.3W
Collector-Base Voltage (Maximum) VCB 210V
Collector Current (Maximum) IC 0.15A
Operating Junction Temperature (Maximum) TJ 175°C
Forward Current Transfer Ratio (hFE Value) 30

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