onsemi MJ15002G

Overview

MJ15002G from onsemi is a complementary PNP silicon power transistor designed for high-power linear amplification, specifically in push-pull audio output stages and precision analog control circuits. It delivers 15 A continuous collector current, 140 V collector-emitter breakdown voltage, and 250 W total power dissipation at TC = 25°C, operating reliably from –65°C to +200°C junction temperature.

For engineers reviewing the MJ15002G datasheet, pinout, applications, or equivalent options, key selection criteria include safe operating area (SOA) integrity at high VCE, DC current gain (hFE = 25–150 at IC = 4 A), second-breakdown immunity, thermal resistance (RJC = 0.875°C/W), and Pb-free TO-204AA (TO-3) mechanical compatibility with legacy high-power heatsink mounts.

Technical Context

The MJ15002G operates as a linear-mode PNP bipolar junction transistor with base-controlled current amplification. Its design emphasizes robust second-breakdown performance-supporting non-repetitive pulses up to 5.0 A at VCE = 40 V and 0.5 A at VCE = 100 V-and high DC current gain across 4 A bias conditions.

It features low saturation voltage (VCE(sat) ≤ 1.0 V at IC = 4 A, IB = 0.4 A), moderate bandwidth (fT ≥ 2.0 MHz), and high output capacitance (Cob ≤ 1000 pF), making it suitable for low-frequency, high-current analog applications where switching speed is secondary to thermal stability and SOA margin.

Key Specifications

Pinout & Package

Package: TO-204AA (TO-3), metal-can package with isolated collector case, rated for high-voltage isolation and direct heatsink mounting. Case serves as collector terminal.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MJ15002G, MJ15024G offers higher voltage margin but reduced current gain linearity, while 2N6259 trades 50 W of dissipation capacity for broader legacy supply chain access-neither is pin-compatible, and both require layout verification for thermal and electrical interface changes.

Availability

MJ15002G is available at Aetrix Electronics and suitable for high-fidelity audio amplifiers, industrial linear power supplies, and analog servo control amplifiers requiring stable component supply and long-term obsolescence mitigation strategies.

Supply support for MJ15002G 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 manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.

The MJ15002G belongs to onsemi's legacy high-power bipolar transistor family, engineered for rugged linear operation in demanding analog systems where reliability, SOA integrity, and thermal stability outweigh digital switching speed requirements.

FAQ

Is MJ15002G still in active production?

No-onsemi has discontinued MJ15002G and does not recommend it for new designs. However, Aetrix Electronics maintains verified legacy stock with full traceability and provides extended lifecycle support including last-time buy planning and cross-reference engineering guidance for MJ15002G replacement paths in existing production lines.

What is the pin configuration of MJ15002G in TO-204AA package?

The MJ15002G uses Style 1 pinout per onsemi's mechanical outline: Pin 1 is Base, Pin 2 is Emitter, and the metal case is the Collector. This configuration is standardized across the MJ1500x series and requires insulated mounting hardware when the collector is not referenced to chassis ground.

Can MJ15002G be used as a direct replacement for MJ15002?

Yes-MJ15002G is the Pb-free, RoHS-compliant version of MJ15002, sharing identical electrical specifications, thermal performance, and mechanical dimensions. The "G" suffix denotes lead-free termination only; no redesign or qualification retesting is required when substituting MJ15002G for MJ15002 in existing assemblies.

What thermal interface materials are recommended for MJ15002G?

For optimal thermal transfer, use thermally conductive silicone grease (e.g., Dow Corning TC-5122) or phase-change pads (e.g., Laird TPCM 600) between the MJ15002G TO-204AA case and aluminum heatsink. Ensure mounting torque is 12–15 in-lb to maintain uniform pressure without deforming the can seal, preserving RJC = 0.875°C/W performance.

Does MJ15002G support complementary operation with MJ15001G?

Yes-MJ15002G is explicitly designed as the PNP complement to MJ15001G (NPN). Their matched hFE, VBE(on), and SOA characteristics enable symmetrical Class-AB audio output stages with minimized crossover distortion and balanced thermal loading in push-pull configurations.