MJL21194 NPN Power Transistor Datasheet

Introduction

The MJL21194 is a high-power NPN bipolar junction transistor (BJT) designed for audio power amplifiers, power switching circuits, and high-current linear applications. Manufactured by ON Semiconductor, it comes in a TO-264 package that provides superior heat dissipation and mechanical strength, making it ideal for use in high-fidelity (Hi-Fi) audio amplifier stages and professional sound systems.

This transistor offers excellent linear gain performance, low distortion, and high current handling capability, which makes it a preferred choice for both class-AB and class-B amplifier output stages. With a collector current rating up to 16A, a collector-emitter voltage of 250V, and a power dissipation capacity of 200W, the MJL21194 can deliver high power output while maintaining exceptional thermal stability.

MJL21194 NPN Power Transistor

Thanks to its complementary pairing with the MJL21193 PNP transistor, the MJL21194 is widely used in push-pull amplifier designs where efficiency and sound quality are critical. It is also well-known for its rugged construction, wide safe operating area (SOA), and high gain linearity, making it suitable for demanding industrial and audio power applications.

MJL21194 Pinout

Pin Configuration

Key Features

• High-power NPN transistor for audio and power applications
• Large safe operating area (SOA) for robust performance under heavy loads
• High current gain with excellent linearity
• Low distortion for high-fidelity audio output stages
• TO-264 package for enhanced thermal management
• Complementary with MJL21193 (PNP) for push-pull amplifier designs
• Reliable performance for continuous industrial and commercial use

Characteristics

• Transistor Type: NPN
• Package Type: TO-264 (Plastic)
• Collector-Emitter Voltage (Vce): 250V
• Collector-Base Voltage (Vcb): 250V
• Emitter-Base Voltage (Veb): 5V
• Collector Current (Ic): 16A (maximum)
• Power Dissipation (Ptot): 200W
• DC Current Gain (hFE): 25 – 160
• Transition Frequency (fT): 4 MHz
• Operating Junction Temperature: -65°C to +150°C
• Thermal Resistance (Junction-to-Case): 0.875°C/W

More Circuit Layouts

Key Applications of MJL21194 NPN Power Transistor

• High-Fidelity Audio Power Amplifiers
• Professional Sound Systems and PA Amplifiers
• Power Output Stages in Class-AB and Class-B Amplifiers
• High-Current Voltage Regulators
• DC-DC and AC Power Converters
• Industrial Motor Control Circuits
• High-Performance Push-Pull Amplifier Designs

PNP Complementary Transistor

• MJL21193 — PNP Complementary Power Transistor (Perfect match for push-pull and high-power audio amplifier stages with MJL21194)

Equivalent of MJL21194 NPN Power Transistor

• 2SC5200
• MJ21194
• MJE15034
• 2N3055 (lower power version)
• MJ15024
• TIP35C
• BD249C

(Pin configuration of some transistors mentioned above may different from MJL21194).

Datasheet of MJL21194 NPN Power Transistor

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