MJ2955 PNP Power Transistor TO-3 Metal Package

MJ2955 PNP Power Transistor TO-3 Metal Package

The MJ2955 is a high-power PNP bipolar junction transistor (BJT) designed for audio amplification, power switching, and regulation applications. It comes in a TO-3 metal can package, which provides excellent heat dissipation, making it ideal for high-current and high-power circuits.

As a PNP transistor, it conducts when the base is more negative relative to the emitter, allowing current to flow from emitter to collector. The MJ2955 is widely used in complementary output stages with the 2N3055 NPN transistor in power amplifier circuits.

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Key Features:

• Type: PNP Bipolar Power Transistor
• Collector-Emitter Voltage (Vce): 60V max
• Collector Current (Ic): 15A max
• Package: TO-3 Metal Can (excellent heat dissipation)
• Total Power Dissipation (Ptot): 115W max (with proper heat sinking)
• DC Current Gain (hFE): 20–70 (depending on collector current)
• Complementary NPN: Works with 2N3055 for push-pull amplifier stages
• High surge current handling
• Low thermal resistance due to TO-3 metal package

Applications:

1. Audio Power Amplifiers: Widely used in the output stage of high-power audio amplifiers.
2. Switching Regulators: Can handle high currents in linear and switching power supplies.
3. Motor Drivers: Suitable for driving DC motors and other high-current loads.
4. Industrial Control: Used in heavy-duty switching circuits and power controllers.
5. Push-Pull Stages: Complementary pairing with 2N3055 for class B or AB amplifier designs.

MJ2955-transistor-datasheet