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BC145 NPN Transistor

The BC145 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BC145 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BC145 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 BC145 transistor as follows.

Circuit diagram symbol of the BC145 transistor

BC145 Transistor Specification

Transistor Code BC145
Transistor Type BJT
Transistor Polarity NPN
Transistor Material Silicon(SI)
Package TO106
Collector Power Dissipation (Maximum) PC 0.3W
Collector-Base Voltage (Maximum) VCB 120V
Collector-Emitter Voltage (Maximum) VCE 120V
Collector Current (Maximum) IC 0.1A
Operating Junction Temperature (Maximum) TJ 125°C
Emitter-Base Voltage (Maximum) VEB 5V
Forward Current Transfer Ratio (hFE Value) 30
Transition Frequency FT 40MHz
Collector Capacitance CC 9pF

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