2N3054 NPN Silicon Medium Power Transistor 55V 4A TO-66 Metal Package

2N3054 NPN Silicon Medium Power Transistor 55V 4A TO-66 Metal Package

The 2N3054 is a medium power silicon NPN transistor widely used in audio, switching, and general-purpose amplifier applications. Designed for reliability and efficiency, it provides high collector current capability (up to 4A) and moderate voltage handling (55V), making it suitable for a range of linear and switching circuits.

Housed in a TO-66 metal case, the transistor offers excellent thermal performance and durability, ideal for environments where heat dissipation and mechanical strength are essential. Its construction allows for efficient operation under continuous load, making it a popular choice for both industrial and educational electronic projects.

The 2N3054’s moderate gain characteristics and low saturation voltage ensure good performance in audio power amplifiers, motor control, and signal processing circuits. It can be used in push-pull amplifier configurations and driver stages for larger transistors like the 2N3055.

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Key Features:

• NPN Silicon Medium Power Transistor
• Collector–Emitter Voltage (Vce): 55V
• Collector–Base Voltage (Vcb): 80V
• Emitter–Base Voltage (Veb): 7V
• Collector Current (Ic): 4A continuous
• Power Dissipation (Ptot): 25W at 25°C case temperature
• DC Current Gain (hFE): 20–70 (depending on current)
• Transition Frequency (fT): 3 MHz typical
• Junction Temperature (Tj max): 200°C
• Package Type: TO-66 Metal (flanged for heat sinking)
• Mounting Style: Through-hole
• Lead Finish: Tin-plated for easy soldering

Advantages:

• Excellent heat dissipation due to metal case construction
• High reliability and long service life
• Suitable for both linear and switching applications
• Low saturation voltage for efficient operation
• Compatible with complementary PNP types like 2N2955 or MJ2955

Typical Applications:

• Audio power amplifiers
• Voltage and current regulators
• Power drivers and control stages
• Relay, solenoid, and lamp drivers
• General-purpose medium power switching
• Educational and laboratory projects

2n3054-transistor-datasheet