MJE2955 Pinout, Equivalent, Application, Datasheet

The MJE2955 is a high-current PNP power transistor commonly used in complementary power stages. This article explains the MJE2955 pinout, specifications, working principle, and applications in a clear 9-heading format.

Introduction

The MJE2955 is a PNP bipolar junction power transistor designed for high-current and medium-voltage applications. It is widely used as a complementary pair with the MJE3055 in audio amplifiers, power supplies, and other linear power circuits.

MJE2955 Pinout

Understanding the MJE2955 Pinout Configuration

The MJE2955 comes in a TO-220 package with a B-C-E pin configuration:

Correct identification of the MJE2955 pinout is critical for proper circuit operation and device safety.

MJE2955 Key Features

• PNP power transistor
• High collector current handling capability
• Suitable for complementary amplifier designs
• Good thermal stability
• Reliable performance in linear power applications
• TO-220 package allows efficient heat dissipation

MJE2955 Characteristics / Specifications

• Collector-Emitter Voltage (VCE): −60V
• Collector-Base Voltage (VCB): −70V
• Emitter-Base Voltage (VEB): −5V
• Collector Current (IC): −10A
• Power Dissipation (PD): 75W
• Junction Temperature (Tj): 150 °C
• Storage Temperature (Tstg): −55 °C to +150 °C
• Package Type: TO-220
• Pin Configuration: Base – Collector – Emitter

More Circuit Layouts

Key Applications of MJE2955 PNP Power Transistor

• Audio power amplifiers (complementary pairs)
• Linear regulated power supplies
• Power switching circuits
• Motor driver stages
• Push-pull amplifier designs

NPN Complementary Transistor

• MJE3055 — NPN complementary transistor designed to pair with MJE2955 in push-pull or class AB amplifier configurations.

Equivalent of MJE2955 PNP Power Transistor

Equivalent Transistors:

• 2N2955
• TIP2955

Alternative Transistors:

• MJ15016
• BD250
• TIP36

(Pin configuration of some transistors mentioned above may different from MJE3055 ).

Working Principle of MJE2955

The MJE2955 operates as a current-controlled PNP transistor. When the base is driven negative with respect to the emitter, it allows current to flow from emitter to collector. This behavior makes it suitable for high-side switching and complementary output stages.

Frequently Asked Questions (FAQ)

Q1: Is MJE2955 complementary to MJE3055?
Yes, MJE2955 (PNP) is commonly used as a complementary pair with MJE3055 (NPN).

Q2: Can MJE2955 be used in audio amplifiers?
Yes, it is widely used in audio output stages and power amplifier circuits.

Q3: Does MJE2955 require a heat sink?
Yes, a heat sink is recommended for high current and high power operation.

Q4: What type of transistor is MJE2955?
It is a PNP bipolar junction power transistor.

Conclusion

The MJE2955 transistor is a reliable PNP power device ideal for complementary and high-current applications. With its clear B-C-E pinout, strong power handling capability, and TO-220 package, it remains a popular choice in power electronics and audio amplifier designs.

Datasheet of MJE2955 PNP Power Transistor

Click the following Button to download the datasheet of MJE2955 Transistor :

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