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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

onsemi MJE15030

Name: MJE15030
Brand: onsemi
SKU: MJE15030
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MJE15030

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-220-3

Datasheet:: MJE15030.pdf

Description:: TRANS NPN 150V 8A TO-220

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Product details

Overview

MJE15030 from onsemi is an NPN silicon power transistor in a TO-220 package, rated for 150 V_CEO, 8 A continuous collector current, and 50 W total device dissipation at T_C = 25°C. It delivers high current gain–bandwidth product (f_T = 30 MHz) and is engineered for high-frequency driver stages in audio amplifier output circuits.

For engineers reviewing the MJE15030 datasheet, pinout, applications, or equivalent options, key selection criteria include V_CEO rating, safe operating area (SOA) under pulse conditions, thermal resistance (R_JC = 2.5°C/W), DC current gain linearity across 0.1–3 A, and complementary PNP pairing with MJE15031.

Technical Context

The MJE15030 operates as a linear NPN bipolar junction transistor optimized for Class AB audio output stage drivers. Its SOA is defined by three limits-bonding wire, thermal, and second breakdown-with pulse-rated capability up to 16 A peak and validated f_T performance at I_C = 500 mA, V_CE = 10 V, and f_test = 10 MHz.

It features low V_CE(sat) ≤ 0.5 V at I_C = 1 A / I_B = 0.1 A and V_BE(on) ≤ 1.0 V at I_C = 1 A, supporting efficient biasing in push-pull configurations. The device is Pb-free, RoHS-compliant, and specified over T_J = −65°C to +150°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	150 Vdc - Withstands 150 V collector-to-emitter voltage before breakdown, enabling use in high-voltage audio rails.
I_C (continuous)	8.0 Adc - Supports sustained 8 A collector current at T_C = 25°C, suitable for medium-power output stages.
P_D @ T_C = 25°C	50 W - Delivers 50 W dissipation with heatsink mounting; derates 0.40 W/°C above 25°C case temperature.
f_T	30 MHz - Ensures stable high-frequency gain response up to 30 MHz, critical for wideband audio driver fidelity.
R_JC	2.5 °C/W - Low junction-to-case thermal resistance enables effective heat transfer to heatsink in compact TO-220 layout.
h_FE @ I_C = 2 A	40 min - Minimum DC current gain of 40 at 2 A collector current ensures predictable base drive requirements.
V_CE(sat)	≤ 0.5 V - Low saturation voltage minimizes conduction loss and improves efficiency in linear amplifier operation.

Pinout & Package

Package: TO-220-3 (Case 221A, Style 1), with pins arranged as Base (Pin 1), Collector (Pin 2), Emitter (Pin 3), and Collector (Pin 4). Pins 2 and 4 are internally connected to the collector lead for enhanced thermal and current handling.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Base	Control terminal for forward-biased BJT operation; requires current-limited drive per h_FE and V_BE(on) specs.
Pins 2 & 4	Collector	Internally tied collector terminals; used for high-current output path and direct heatsink mounting via metal tab.
Pin 3	Emitter	Common emitter node for Class AB output stage; referenced to ground or negative rail in complementary designs.

Key Features

Feature	Design Value
High f_T bandwidth	30 MHz gain-bandwidth product enables faithful reproduction of audio harmonics up to ultrasonic range.
Complementary PNP pairing	Designed for matched operation with MJE15031 in push-pull output stages, ensuring symmetrical clipping and distortion control.
Robust SOA	Thermally and second-breakdown limited SOA curves validated for pulse durations from 10 μs to DC, supporting dynamic audio transients.
Pb-free & RoHS compliant	Meets environmental compliance requirements without sacrificing thermal or electrical performance in industrial audio systems.

Applications

High-Fidelity Audio Amplifiers	Professional Audio Power Modules
Use Scenario: Final output stage driver in discrete Class AB stereo amplifiers delivering 50–100 W per channel into 4–8 Ω loads. IC Role / Device Role / Timing Role: NPN power transistor providing current gain and voltage swing amplification in push-pull topology with MJE15031. Use Value: 150 V_CEO and 8 A I_C support rail voltages up to ±70 V, enabling high headroom and low THD+N in mid-to-high-end audio systems.	Use Scenario: Output stage in rack-mountable powered loudspeaker modules requiring rugged, serviceable discrete transistors. IC Role / Device Role / Timing Role: Linear power switch handling continuous RMS power and transient peaks in active crossover-equipped cabinets. Use Value: TO-220 package with dual collector pins allows secure mechanical mounting and low-inductance heatsinking, improving thermal stability during long-duration program material.
Studio Monitor Driver Circuits	Industrial Audio Signal Distribution
Use Scenario: Driver for near-field studio monitors where low noise, wide bandwidth, and precise gain linearity are essential. IC Role / Device Role / Timing Role: High-fidelity current source in feedback-stabilized output stage, directly coupled to speaker load via Zobel network. Use Value: h_FE linearity (2–3× variation from 0.1 A to 3 A) and 30 MHz f_T preserve transient response and phase coherence across 20 Hz–20 kHz.	Use Scenario: Power output stage in distributed audio systems for commercial buildings, including background music and emergency paging. IC Role / Device Role / Timing Role: Reliable linear amplifier core operating continuously at elevated ambient temperatures (up to +70°C). Use Value: R_JA = 62.5°C/W and T_J range of −65°C to +150°C ensure operational integrity in unventilated enclosures and outdoor-rated cabinets.

High-Fidelity Audio Amplifiers

Professional Audio Power Modules

Use Scenario: Final output stage driver in discrete Class AB stereo amplifiers delivering 50–100 W per channel into 4–8 Ω loads.

IC Role / Device Role / Timing Role: NPN power transistor providing current gain and voltage swing amplification in push-pull topology with MJE15031.

Use Value: 150 V_CEO and 8 A I_C support rail voltages up to ±70 V, enabling high headroom and low THD+N in mid-to-high-end audio systems.

Use Scenario: Output stage in rack-mountable powered loudspeaker modules requiring rugged, serviceable discrete transistors.

IC Role / Device Role / Timing Role: Linear power switch handling continuous RMS power and transient peaks in active crossover-equipped cabinets.

Use Value: TO-220 package with dual collector pins allows secure mechanical mounting and low-inductance heatsinking, improving thermal stability during long-duration program material.

Studio Monitor Driver Circuits

Industrial Audio Signal Distribution

Use Scenario: Driver for near-field studio monitors where low noise, wide bandwidth, and precise gain linearity are essential.

IC Role / Device Role / Timing Role: High-fidelity current source in feedback-stabilized output stage, directly coupled to speaker load via Zobel network.

Use Value: h_FE linearity (2–3× variation from 0.1 A to 3 A) and 30 MHz f_T preserve transient response and phase coherence across 20 Hz–20 kHz.

Use Scenario: Power output stage in distributed audio systems for commercial buildings, including background music and emergency paging.

IC Role / Device Role / Timing Role: Reliable linear amplifier core operating continuously at elevated ambient temperatures (up to +70°C).

Use Value: R_JA = 62.5°C/W and T_J range of −65°C to +150°C ensure operational integrity in unventilated enclosures and outdoor-rated cabinets.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJE15030G	Same device, Pb-free variant; identical electrical and thermal specs; G suffix denotes RoHS-compliant packaging.	No functional difference; selected when Pb-free compliance is mandated by regional regulations or OEM policy.	Direct form-fit-function replacement for MJE15030 in new designs requiring RoHS certification.
2SC5200	Higher f_T (≥30 MHz typical vs. 30 MHz min), slightly lower V_CEO (230 V vs. 150 V), same TO-220 package and pinout (Base-Collector-Emitter).	Better suited for ultra-wideband audio or RF driver roles; less margin in high-rail voltage applications (>±70 V).	Consider when higher small-signal gain or extended frequency response is prioritized over maximum voltage rating.

Compared with MJE15030G and 2SC5200, the MJE15030 offers verified 150 V_CEO margin and consistent h_FE linearity across its rated current range-making it preferred for cost-sensitive, high-reliability audio amplifier designs where voltage headroom and thermal predictability are primary concerns.

Availability

MJE15030 is available at Aetrix Electronics and suitable for high-fidelity audio amplifiers, professional audio power modules, and studio monitor driver circuits requiring stable component supply and long-term manufacturing continuity.

Supply support for MJE15030 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 connectivity solutions for automotive, industrial, cloud, and consumer markets.

The MJE15030 belongs to onsemi's complementary silicon plastic power transistor family, designed specifically for high-frequency, high-reliability linear audio amplifier driver applications with emphasis on SOA robustness and thermal stability.

FAQ

What is the maximum collector-emitter voltage rating for the MJE15030?

The MJE15030 has a maximum collector-emitter sustaining voltage (V_CEO(sus)) of 150 Vdc at I_C = 10 mA and I_B = 0. This rating is confirmed in the Absolute Maximum Ratings table and applies under pulsed test conditions (pulse width ≤ 300 µs, duty cycle ≤ 2.0%). Exceeding this voltage risks avalanche breakdown and permanent device damage.

Does the MJE15030 have a complementary PNP counterpart?

Yes, the MJE15031 is the designated complementary PNP transistor for the MJE15030. Both devices share matching voltage ratings (150 V_CEO), current capabilities (8 A I_C), thermal characteristics (R_JC = 2.5°C/W), and TO-220 package dimensions. They are jointly specified in the same datasheet and intended for symmetrical push-pull output stages in audio amplifiers.

What is the thermal resistance from junction to case for the MJE15030?

The MJE15030 has a maximum thermal resistance from junction to case (R_JC) of 2.5°C/W, measured under standard mounting conditions with the TO-220 metal tab thermally bonded to a heatsink. This value enables accurate junction temperature estimation using T_J = T_C + (P_D × R_JC) and is critical for SOA compliance in continuous-duty audio applications.

Can the MJE15030 be used in switching applications?

The MJE15030 is characterized and optimized for linear amplifier operation-not fast switching. While its turn-on/off times (e.g., t_r ≈ 0.3 µs, t_f ≈ 0.2 µs) are documented, it lacks specified switching SOA, gate charge, or avalanche energy ratings. For switching use, dedicated power MOSFETs or IGBTs with validated hard-switching waveforms are recommended instead of the MJE15030.

Is the MJE15030 RoHS-compliant?

Yes, the MJE15030G variant is explicitly marked as Pb-free and RoHS-compliant per the datasheet. Standard MJE15030 may refer to legacy non-Pb-free versions; however, current production and distribution through authorized channels (including Aetrix Electronics) exclusively supply the MJE15030G. Compliance documentation is available in onsemi's Soldering and Mounting Techniques Reference Manual.

MJE15030 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 8 A

Voltage - Collector Emitter Breakdown (Max):: 150 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 100mA, 1A

Current - Collector Cutoff (Max):: 100µA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 20 @ 4A, 2V

Power - Max:: 50 W

Frequency - Transition:: 30MHz

Operating Temperature:: -65°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

MJE15030 FAQ

1.How can I place an order for MJE15030 through Aetrix?

Please submit a Request for Quotation (RFQ) for MJE15030 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MJE15030 reliable?

The price and inventory of MJE15030 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJE15030 is usually 5 days.

3.What payment methods are accepted for MJE15030?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJE15030 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MJE15030?

MJE15030 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MJE15030 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MJE15030?

For technical support, including MJE15030 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJE15030 requirements.

6.How does Aetrix verify that MJE15030 is sourced from the original manufacturer or authorized distributors?

All MJE15030 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MJE15030 meets industry standards.

7.What is the process for return or replacement of MJE15030?

All MJE15030 units undergo pre-shipment inspection (PSI). If there is an issue with MJE15030, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MJE15030 part is unused and in its original packaging.

Return procedure for MJE15030:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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