Introduction
The MJ2955 is a robust and widely used PNP power transistor, engineered using epitaxial-base planar technology. This manufacturing process contributes to its excellent performance in high-power applications, including audio, power linear, and switching circuits. Encased in a durable TO-3 metal can package, the MJ2955 is designed for superior thermal dissipation, which is crucial for handling the significant power and current that it’s rated for.

With a collector-emitter voltage (VCE) of -60V and a continuous collector current (IC) of -15A, the MJ2955 is well-suited for demanding tasks. It’s often paired with its complementary NPN transistor, the 2N3055, to form the output stage of audio power amplifiers. This complementary pair is a classic design choice, enabling the construction of powerful and efficient push-pull amplifier configurations.
MJ2955 PNP Transistor

MJ2955 PNP Transistor Pinout
Beyond audio applications, the MJ2955 is also a staple in voltage regulation, power supply circuits, and motor driver designs. Its reliability and high-current handling capability make it a go-to component for engineers and hobbyists building and repairing a wide range of power electronics. While newer, more advanced transistors exist, the MJ2955’s proven track record and widespread availability ensure its continued relevance in the field.

MJ2955 PNP Transistor Specifications
Characterstics | Rating (Max) |
---|---|
Collector-Base Voltage(VCBO) | 100 V |
Collector-Emitter Voltage(VCEO) | 60 V |
Emitter-Base Voltage(VEBO) | 7 V |
Continuous Collector Current(IC) | 15 A |
Continuous Base Current(IB) | 7 A |
DC Current Gain(hFE) | 120(Max) |
Collector Power Dissipation(PC) | 115 W |
Storage Temperature(TSTG) | -65 °C ~ 200 °C |
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Key Applications of the MJ2955 Transistor
Following are the key applications of this power transistor:
- Audio Amplifiers
- General Pupose
Equivalent transistors
Transistors that are exactly similar or equivalent to MJ2955 and can be replaced with the following:
- MJ2955A
- MJ2955SM
- MJ2955G
- GMJ2955
- 2N3055A
Download Datasheet of MJ2955
Click the following Button below to download the datasheet of MJ2955 NPN Transistor:
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