A bd140 transistor is a PNP transistor that works with the medium power, the moderate current device at the circuits, and the applications based on bd140 are at project allied circuits.

The total gain at the bd140 transistor is from the value 25 to 250hFE, the peak current gain value is very important on the applications like amplifiers and voltage regulators.

The collector current at the bd140 transistor is -1.5A, the negative at the current value indicates it is a PNP transistor, but the maximum collector current represents the peak load allowable on the bd140 transistor, at the circuits like amplifiers and h-bridge utilize this specification.

The base current at the bd140 is -0.5A, the maximum allowable base voltage to trigger the transistor.

The power dissipation at the bd140 device is 12.5W, this particular value indicates the peak value of power dissipation allowable on to a transistor and the to-126 transistor package is good at power dissipation.

The transition frequency on the bd140 transistor is 190MHZ, it is the main thing at the switching circuits. The junction temperature of the bd140 transistor is 150°C.

BD140 Transistor specification

• It is a Bipolar PNP Transistor
• DC Current Gain range is 25 to 250h_FE
• Collector current (I_C) is -1.5A
• Collector to base Voltage (V_CB) is -80V
• Collector to emitter voltage (V_CE) is -80v
• Emitter to base voltage (V_EB) is -5V
• Junction temperature (T_J) is 150°C
• Base Current (I_B) is -0.5A
• Power dissipation at the transistor is 12.5W
• Transition frequency (F_T) is 190MHz 

BD140 pinout