BD140 Bipolar Transistor PNP 80V 1.5A TO-126

Description

BD140 Bipolar Transistor PNP 80V 1.5A TO-126 BD140 Bipolar Transistor PNP 80V 1.5A TO-126 – High-Gain, Reliable Amplifier & Switching Solution is a versatile PNP bipolar junction transistor designed for amplification and switching applications. With a collector-emitter voltage rating of 80V and a continuous collector current of 1.5A, the BD140 is ideal for audio amplifiers, driver stages, power management circuits, and general-purpose electronic designs. Housed in a compact TO-126 package, it offers dependable performance, efficient thermal characteristics, and easy integration into both professional and hobby electronics projects. Features PNP bipolar transistor for amplification and switching applications. High collector-emitter voltage rating of 80V. Supports continuous collector current up to 1.5A. Suitable for audio amplifier output and driver stages. Compact TO-126 package for efficient mounting. Reliable electrical performance and stability. Good gain characteristics for signal amplification. Compatible with a wide range of electronic circuits. Durable construction for long-term operation. Ideal for professional and DIY electronics projects. Specifications Parameter Details Part Number BD140 Transistor Type PNP Bipolar Junction Transistor Package Type TO-126 Mounting Type Through Hole Collector-Emitter Voltage (VCEO) 80V Collector-Base Voltage (VCBO) 80V Emitter-Base Voltage (VEBO) 5V Collector Current (IC) 1.5A Power Dissipation (PD) 12.5W DC Current Gain (hFE) 40 To 250 Operating Temperature -65°C To +150°C Dimensions Pinout Configuration Pin Number Pin Name Pin Description 1 Emitter Current Drains out through emitter, normally connected to ground 2 Collector Current flows in through collector, normally connected to load 3 Base Controls the biasing of the transistor, used to turn ON or OFF the transistor. How to use BD140 Transistor Transistors are current-controlled devices so to turn them on a little current is needed. For the BD140 Transistor, this base current is less than 10mA, as BD140 is a PNP transistor that means it will be on when the base is connected to the ground, and it will be off when a positive voltage is applied to the base of the transistor. The simulated circuit below shows how this transistor behaves when the base of the basic circuit is connected to the ground and when it’s connected to 12V of the power supply. When we turn on the transistor by connecting the base to the ground the transistor will remain on unless the voltage at the base of the transistor reaches more than the base turn-off voltage, for this transistor, it is somewhere in between 0.7 -0.9V. The base of the transistor cannot be left floating otherwise there could be false triggering, which may lead to issues in the circuit. To resolve this issue, we need to add pullup resistors as shown in the example, a 10K resistor is used to pull up the base of the transistor to VCC. Applications Audio amplifier circuits. Power amplifier driver stages. Signal amplification circuits. General-purpose switching applications. Power supply control circuits. Motor driver circuits. Electronic control systems. Educational and laboratory projects. DIY electronics development. Complementary transistor pair designs with NPN transistors. Datasheet BD140

From the supplier's page.