Introduction
The MJL21193 is a high-power PNP bipolar junction transistor (BJT) designed for audio power amplifier output stages, linear amplifiers, and high-current switching circuits. Manufactured by ON Semiconductor, this device is built in a TO-264 package, offering exceptional thermal stability and heat dissipation. It is widely used in Hi-Fi audio amplifier designs, professional sound reinforcement systems, and industrial power amplifiers that require both reliability and clean signal reproduction.

This transistor delivers excellent linear gain, low distortion, and a broad safe operating area (SOA), making it a perfect choice for high-fidelity class-AB push-pull amplifier configurations. It can handle a collector current of up to 16A, with a collector-emitter voltage of 250V and a power dissipation of 200W, ensuring consistent performance even under heavy load or thermal stress conditions.
MJL21193 PNP Power Transistor

The MJL21193 is specifically designed to operate as the PNP complementary pair of the MJL21194 (NPN) transistor, providing perfect symmetry for push-pull amplifier circuits. Its high reliability, wide frequency response, and rugged construction make it an ideal choice for both commercial and industrial audio applications where durability and performance are critical.
MJL21193 Pinout

Pin Configuration
| Pin# | Pin Name | Pin Description |
|---|---|---|
| 1 | Base (B) | Controls the transistor operation through input current. |
| 2 | Collector (C) | Main current path; connected to the load or supply. |
| 3 | Emitter (E) | Releases charge carriers; commonly connected to ground or negative rail. |
Key Features
- High-power PNP transistor designed for audio and linear amplifier stages
- Complementary to MJL21194 (NPN) for push-pull configurations
- Excellent linear gain and low crossover distortion
- Wide safe operating area (SOA) for high reliability under heavy loads
- Robust TO-264 package with superior heat dissipation capability
- Suitable for both professional and consumer audio power systems
- High voltage and current handling capacity for industrial applications
Characteristics
- Transistor Type: PNP
- Package Type: TO-264
- 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
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Key Applications of MJL21193 PNP Power Transistor
- High-Fidelity Audio Power Amplifiers
- Professional Sound and Studio Equipment
- Class-AB and Class-B Amplifier Output Stages
- DC-AC and DC-DC Power Conversion Circuits
- Motor Drive and Control Systems
- Industrial Linear Power Supplies
- Push-Pull Power Amplifier Designs
NPN Complementary Transistor
- MJL21194 — NPN Complementary Transistor
(Perfect matching device for push-pull and high-power audio output stages)
Equivalent of MJL21193 PNP Power Transistor
- 2SA1943
- MJ21193G (eco-friendly lead-free version)
- MJE15033
- 2N2955 (lower power equivalent)
- MJ15025
- TIP36C
- BD250C
(Pin configuration of some transistors mentioned above may different from MJL21193).
Datasheet of MJL21193 PNP Power Transistor
Click the following Button to download the datasheet of MJL21193 PNP Transistor :
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