BD140 Power Transistor


BD140 is a three layer NPN or PNP device within the working range, the collector current IC is a function of the base current IB, a change in the base current giving a corresponding amplified change in the collector current for a given collector emitter voltage VCE.

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Transistor Polarity PNP
Collector−Emitter Voltage (VCEO) 80V
Collector−Base Voltage (VCBO) 80V
Continuous Collector Current (Ic) 1.5A
Continuous Base Current (Ib) 0.5A
DC Current Gain (hFE) 40-250
Operating Temperature Range -65 – 150°C
Power Dissipation (Pd) 12.5W
Thermal Resistance (ΘJA) 100°C/W
Thermal Resistance (ΘJC) 10°C/W


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