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KT9149B NPN Transistor

The KT9149B is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the KT9149B transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The KT9149B 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 KT9149B transistor as follows.

Circuit diagram symbol of the KT9149B transistor

KT9149B Transistor Specification

Transistor Code KT9149B
Transistor Type BJT
Transistor Polarity NPN
Transistor Material Silicon(SI)
Collector Power Dissipation (Maximum) PC 12W
Collector-Base Voltage (Maximum) VCB 45V
Collector-Emitter Voltage (Maximum) VCE 28V
Collector Current (Maximum) IC 2.1A
Operating Junction Temperature (Maximum) TJ 125°C
Emitter-Base Voltage (Maximum) VEB 2V
Forward Current Transfer Ratio (hFE Value) 10
Transition Frequency FT 2300MHz

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