TIP42 PNP Transistor Pinout Datasheet

Introduction

The TIP42 is a high-performance PNP bipolar junction transistor (BJT) designed for general-purpose switching and amplification applications. As a member of the TIP42 family, it stands out due to its higher voltage rating, making it a preferred choice for circuits that require reliable operation under more demanding electrical conditions. The TIP42 transistor is housed in a TO-220 package, which allows for efficient heat dissipation and high power handling, making it suitable for use in power electronics and audio amplifier stages.

Note: DATASHEET DOWNLOAD button is provided end of this article.

This transistor can handle a maximum collector current of -6A and a collector-emitter voltage (VCE) of up to -100V, enabling it to drive heavy loads with ease. Its robust characteristics make it ideal for medium to high-power switching applications, such as relay drivers, motor control circuits, and power management systems. The 65-watt collector dissipation allows the TIP42 to perform efficiently in high-power environments, particularly when mounted with a suitable heatsink to manage thermal stress.

TIP42 PNP Transistor

In amplification applications, the TIP42 is commonly used in audio amplifiers, including push-pull configurations when paired with its NPN counterpart (such as TIP41C). Its moderate current gain (hFE) and good linearity make it well-suited for signal amplification, particularly in output stages of audio systems where both power and fidelity are crucial. The transistor’s ability to operate reliably at elevated currents and voltages makes it a solid choice for DIY audio projects, commercial amplifier designs, and other analog circuit designs.

TIP42 Pinout

The TIP42 belongs to a family of similar transistors, including TIP42, TIP42A, and TIP42B, each differing primarily in their maximum voltage ratings. Among these, the TIP42 offers the highest voltage tolerance, making it the most versatile option for applications requiring greater voltage headroom. As a result, the TIP42 is frequently recommended in designs where voltage spikes or transients could pose a risk to less robust components.

Overall, the TIP42 PNP transistor offers a reliable and economical solution for a wide range of general-purpose electronics applications, from power switching to audio signal amplification. Its availability, durability, and compatibility with standard circuit designs make it a go-to component for engineers, hobbyists, and students alike. Whether used in power supplies, motor drivers, or audio amplifiers, the TIP42 continues to be a trusted and widely used general-purpose transistor in the electronics industry.

TIP42 Transistor Specifications/Characteristics

More Circuit Layouts

Key Applications of TIP42 PNP Transistor

• Audio Amplifiers
• Motor Driver Circuits
• Battery Charger Designs
• Power Supply Designs
• Switching Loads under -6A
• Darlington Pair

NPN Complimentary Transistor

NPN Complementary of TIP42 Transistor is TIP41.

Equivalent Transistors of TIP42 PNP Transistor

2SB595, 2SA77, 2N6134, 2SA1010, BD712, BD912, 2SB633, 2SB690, BDT42C, MJE34C, MJE42C, NSP42C, RCA1C06. (The pinout for certain transistors can vary from that of the TIP42).

Datasheet of TIP42 Transistor

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