onsemi MJE15033

Overview

MJE15033 from onsemi is a PNP silicon power transistor in TO-220 package, rated for 250 V_CEO, 8 A continuous collector current, and 50 W total power dissipation at T_C = 25°C. It delivers high DC current gain (h_FE ≥ 70 at I_C = 0.5 A), 30 MHz f_T, and low V_CE(sat) ≤ 0.5 V - designed specifically as a high-frequency driver stage in discrete audio amplifier output circuits.

For engineers reviewing the MJE15033 datasheet, pinout, applications, or equivalent options, key selection criteria include its complementary pairing with MJE15032, thermal resistance R_JC = 2.5°C/W, safe operating area (SOA) compliance up to 150°C junction, and Pb-free RoHS-compliant TO-220-3 packaging with dual collector terminals.

Technical Context

The MJE15033 operates as a linear-mode PNP power switch in Class AB or Class B audio output stages, supporting high-current drive with stable h_FE across –65°C to +150°C junction range. Its SOA curve (Figure 2) defines hard limits for simultaneous V_CE and I_C under pulsed conditions, with second-breakdown immunity validated up to 10% duty cycle.

Thermal design relies on direct case-mounting: R_JA = 62.5°C/W (free-air) versus R_JC = 2.5°C/W (case-conducted), enabling >20 W dissipation with modest heatsinking. The device uses epitaxial base construction to sustain f_T = 30 MHz at I_C = 500 mA, V_CE = 10 V - critical for wideband audio fidelity without phase shift.

Key Specifications

Pinout & Package

Package: TO-220-3 (Case 221A, Style 1), 10.10 × 15.12 × 4.45 mm, 2.54 mm pin pitch, Pb-free, UL 94 V-0 compliant epoxy.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BD249C and MJ15024, the MJE15033 uniquely balances 250 V rating, 30 MHz f_T, TO-220 manufacturability, and Pb-free compliance - making it the optimal choice for modern, high-performance, surface-mount-compatible audio power stages.

Availability

MJE15033 is available at Aetrix Electronics and suitable for high-fidelity audio amplifiers, discrete power output stages, and industrial audio equipment requiring stable component supply, consistent parametric binning, and long-term manufacturing continuity.

Supply support for MJE15033 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 power, analog, sensor, and logic solutions for automotive, industrial, and consumer markets.

The MJE15033 belongs to onsemi's Complementary Silicon Plastic Power Transistor family, engineered specifically for high-linearity, high-frequency audio driver applications where thermal stability, SOA robustness, and complementary NPN/PNP matching are essential.

FAQ

What is the maximum continuous collector current rating for the MJE15033?

The MJE15033 has a maximum continuous collector current (I_C) rating of 8.0 Adc at T_C = 25°C. This rating assumes proper heatsinking; current must be derated linearly by 0.4 A/°C above 25°C case temperature. At T_C = 100°C, the usable I_C drops to 5.0 Adc. The MJE15033 also supports 16 A peak current (I_CM) for short-duration pulses within SOA limits.

Is the MJE15033 pin-compatible with the NPN MJE15032?

Yes - the MJE15033 and MJE15032 share identical TO-220-3 (Case 221A, Style 1) packaging, pinout (Base–Collector–Emitter–Collector), and mechanical dimensions. Their complementary electrical characteristics (V_CEO, I_C, f_T, R_JC) are tightly matched, enabling symmetrical push-pull amplifier layouts without board redesign. The MJE15033 is explicitly designated as the PNP counterpart to the MJE15032 in onsemi's datasheet.

What is the thermal resistance from junction to case (R_JC) for the MJE15033?

The MJE15033 has a maximum thermal resistance from junction to case (R_JC) of 2.5°C/W, as specified in the Thermal Characteristics table of the official datasheet. This value is measured under standardized mounting conditions (flat, greased surface, 20–25 lb-in torque). Achieving this R_JC requires proper mechanical mounting - deviations increase effective thermal resistance and risk thermal runaway.

Does the MJE15033 support high-frequency audio applications up to 100 kHz?

Yes - the MJE15033 has a current gain–bandwidth product (f_T) of 30 MHz, verified at I_C = 500 mAdc, V_CE = 10 Vdc, and f_test = 1.0 MHz. This ensures ample gain margin and minimal phase shift well beyond 100 kHz, supporting ultrasonic feedback correction, wideband active crossovers, and high-slew-rate amplifier designs. Its h_FE remains ≥10 at I_C = 2.0 A, confirming usable gain at full output.

What is the safe operating area (SOA) limit for the MJE15033 at 100 V_CE?

Per Figure 2 in the official datasheet, the MJE15033 supports up to approximately 4.5 A continuous collector current at V_CE = 100 V under DC (single-pulse) conditions at T_J(pk) = 150°C. For repetitive operation at 10% duty cycle, the limit rises to ~6.2 A. Exceeding these boundaries risks second breakdown or thermal failure - designers must verify operating points against the published SOA curves, not just DC ratings.