onsemi MJW21193

Overview

MJW21193 from onsemi is a PNP silicon power transistor designed for high-power linear amplification, specifically in complementary audio output stages and precision linear applications such as disk head positioners. It features 250 V_CEO, 16 A continuous collector current, 200 W power dissipation at T_C = 25°C, TO-247 package, and Perforated Emitter technology for improved gain linearity and SOA.

For engineers reviewing the MJW21193 datasheet, pinout, applications, or equivalent options, key selection criteria include safe operating area (SOA) performance at 50–80 V, THD characterization down to 0.08% (matched pair), DC current gain (h_FE = 20–80 at 8 A), and thermal resistance R_θJC = 0.7°C/W - all critical for Class AB audio amplifier design and high-reliability linear control circuits.

Technical Context

The MJW21193 operates as a high-voltage, high-current PNP bipolar junction transistor optimized for linear-mode operation. Its Perforated Emitter construction enhances current gain uniformity and second-breakdown immunity, enabling stable operation under sustained high-voltage/high-current stress (e.g., V_CE = 50 V, I_C = 4.0 A for 1 s non-repetitive).

It is electrically characterized for total harmonic distortion (THD ≤ 0.08% at 1 kHz, 100 W RMS into 8 Ω), exhibits f_T = 4 MHz at I_C = 1 A, and maintains h_FE linearity across 0.1–16 A - confirming suitability for low-distortion analog signal amplification rather than switching applications.

Key Specifications

Pinout & Package

Package: TO-247 (Case 340L, Style 3), Pb-free, through-hole mounting with isolated collector tab. Thermal path optimized via metal backside contact to heatsink.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP high-power linear transistor applications.

Compared with BDW83C and MJE15033, the MJW21193 uniquely combines 250 V rating, 16 A current, validated THD performance, and Perforated Emitter-enhanced SOA - making it the only option qualified for full-range, high-fidelity audio output and demanding linear servo applications.

Availability

MJW21193 is available at Aetrix Electronics and suitable for high-fidelity audio amplifier production, disk head positioner manufacturing, and industrial linear regulator design requiring stable component supply, long-term lifecycle support, and traceable Pb-free sourcing.

Supply support for MJW21193 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient, high-performance power management, analog, and discrete components for automotive, industrial, and cloud infrastructure applications.

The MJW21193 belongs to onsemi's Silicon Power Transistors product line, engineered specifically for high-reliability linear amplification - emphasizing SOA integrity, THD minimization, and thermal robustness in audio, servo, and precision analog systems.

FAQ

What is the maximum continuous collector current rating for the MJW21193?

The MJW21193 has a maximum continuous collector current (I_C) rating of 16 A at T_C = 25°C. This rating assumes proper heatsinking and derating per the 1.43 W/°C thermal slope above 25°C. At elevated case temperatures, the allowable current decreases linearly - for example, to approximately 12.5 A at T_C = 75°C. The MJW21193 must not exceed this limit to avoid thermal runaway or second-breakdown failure.

Is the MJW21193 pin-compatible with the MJW21194?

No, the MJW21193 and MJW21194 are complementary PNP/NPN devices with identical TO-247 package outlines and pin assignments (Pin 1: Base, Pin 2 & 4: Collector, Pin 3: Emitter), but they are not functionally interchangeable due to opposite polarity. The MJW21193 must be used as the PNP element in a complementary pair, while the MJW21194 serves as its NPN counterpart - both share identical mechanical and thermal characteristics but require mirrored biasing and layout.

Does the MJW21193 have documented total harmonic distortion (THD) performance?

Yes, the MJW21193 datasheet specifies THD performance: unmatched units achieve ≤0.8% THD, while matched pairs (h_FE = 50 at 5 A/5 V) achieve ≤0.08% THD at 1 kHz, 28.3 V RMS output, and 100 W RMS into an 8 Ω load. This measurement was performed using an Audio Precision Model One Plus analyzer per the test circuit in Figure 18 - confirming the MJW21193's suitability for high-fidelity audio output stages.

What is the safe operating area (SOA) limit for the MJW21193 at 80 V collector-emitter voltage?

At V_CE = 80 V, the MJW21193's non-repetitive SOA limit is 2.25 A for 1 second (per Figure 13). This reflects second-breakdown constraints, not thermal limits. For continuous operation, designers must consult the SOA curve and ensure the DC operating point remains within the bounded region - typically requiring V_CE × I_C < 100 W at steady state, with additional margin for transients. The MJW21193's Perforated Emitter design improves this SOA margin versus conventional PNP transistors.

Can the MJW21193 be used in switching applications?

The MJW21193 is not optimized for switching use. Its datasheet emphasizes linear-mode parameters - including THD, SOA, h_FE linearity, and V_CE(sat) - and does not specify switching times, storage time, or gate charge (as it lacks a gate). While it can be switched at low frequencies (<10 kHz), its relatively slow f_T (4 MHz) and lack of switching characterization make it unsuitable for SMPS or high-frequency inverters. The MJW21193 is intended exclusively for linear amplification and precision analog control.