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

onsemi MJW0302AG

Name: MJW0302AG
Brand: onsemi
SKU: MJW0302AG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MJW0302AG

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-247-3

Datasheet:: MJW0302AG.pdf

Description:: TRANS PNP 260V 15A TO-247-3

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Product details

Overview

MJW0302AG from onsemi is a PNP complementary silicon power bipolar transistor designed for high-fidelity audio amplifier output stages. It delivers 15 A continuous collector current, 260 V_CEO, 150 W power dissipation at T_C = 25°C, and exhibits exceptional safe operating area (SOA) with f_T = 30 MHz - enabling robust linear amplification in symmetrical push-pull configurations.

For engineers reviewing the MJW0302AG datasheet, pinout, applications, or equivalent options, key selection criteria include verified SOA performance up to 100°C, h_FE matching within 10% versus its NPN complement MJW0281AG, V_CE(sat) ≤ 1.0 V at I_C = 5 A, and TO-247 package thermal resistance of 0.83°C/W.

Technical Context

The MJW0302AG operates as a linear PNP power switch in Class AB audio output stages, requiring precise biasing and thermal management. Its design emphasizes gain linearity (h_FE = 75–150 across I_C = 0.5–3.0 A), low saturation voltage, and high BV_CEO/BV_CBO (260 V) to support wide-swing rail-to-rail operation in discrete amplifier topologies.

It forms a matched complementary pair with MJW0281AG, enabling symmetrical push-pull operation without crossover distortion. The device's SOA curve (Figure 2) supports pulsed operation up to 30 A with 5 ms pulse width and <10% duty cycle, and its f_T ensures stable high-frequency response up to 30 MHz under specified test conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	260 V - Enables use in ±100 V rail amplifiers without breakdown risk
I_C (continuous)	15 A - Supports >300 W RMS output into 4 Ω loads with proper heatsinking
P_D @ T_C = 25°C	150 W - Requires thermal interface and ≥0.83°C/W heatsink path for safe operation
h_FE @ I_C = 1 A	75–150 - Ensures predictable DC bias stability and gain control in emitter-follower drivers
f_T	30 MHz - Maintains phase margin and bandwidth integrity up to mid-audio frequencies
R_θJC	0.83°C/W - Dictates minimum heatsink thermal resistance for junction temperature <150°C
V_CE(sat) @ I_C = 5 A	≤1.0 V - Limits conduction loss to <5 W per device at full output current

Pinout & Package

Package: TO-247 (Case 340L, Style 3), 3-terminal through-hole power package with isolated collector tab. Mounting surface must be electrically insulated unless collector is referenced to chassis ground.

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Current-controlled input terminal	Drives transistor into active/saturation; requires current-limiting resistor in series with driver stage
2 (Collector)	Main high-current output node	Electrically connected to metal tab; must be insulated from heatsink unless system ground reference permits
3 (Emitter)	Output return path and bias reference	Serves as common node for emitter degeneration resistors and feedback networks in output stage

Key Features

Feature	Design Value
Exceptional SOA	Validated safe operation up to 260 V / 30 A (5 ms pulses), enabling reliable overloads in live audio systems
NPN/PNP gain matching	h_FE tolerance ≤10% between MJW0302AG and MJW0281AG across 50 mA–5 A, ensuring balanced push-pull symmetry
High BV_CEO	260 V rating allows direct use in high-voltage discrete amplifiers without snubbers or derating
Superior gain linearity	h_FE variation <15% from 0.5 A to 3.0 A (V_CE = 5 V), minimizing harmonic distortion in Class AB
High f_T	30 MHz bandwidth supports stable closed-loop compensation and preserves transient fidelity up to 20 kHz

Applications

Home Audio Amplifiers	Professional PA Systems
Use Scenario: Discrete Class AB output stage in stereo integrated amplifiers delivering 100–300 W/channel into 4–8 Ω loads. IC Role / Device Role / Timing Role: PNP power switching element in complementary symmetry output pair, handling negative half-cycle current delivery. Use Value: Low V_CE(sat) and matched h_FE reduce crossover distortion and improve damping factor vs. unmatched transistors.	Use Scenario: High-reliability output stage in touring-grade powered loudspeaker cabinets with dynamic headroom demands. IC Role / Device Role / Timing Role: Primary PNP output device in parallel-configured amplifier modules driving low-impedance line arrays. Use Value: Verified SOA up to 100°C enables sustained high-SPL operation without thermal runaway during long-duration program material.
Theater Sound Systems	Studio Monitor Power Amplifiers
Use Scenario: Multi-channel distributed amplification for cinema surround channels requiring low-noise, high-dynamic-range output. IC Role / Device Role / Timing Role: Linear PNP output transistor in regulated power supply–fed amplifier stages with tight THD+N targets. Use Value: High BV_CEO and gain linearity preserve signal integrity across 20 Hz–20 kHz, critical for cinematic audio fidelity.	Use Scenario: Reference-grade bi-amplified studio monitor power sections demanding ultra-low IMD and DC offset stability. IC Role / Device Role / Timing Role: Final PNP gain stage in fully discrete, zero-feedback topology with precision emitter degeneration. Use Value: Tight h_FE matching with MJW0281AG minimizes channel imbalance and intermodulation distortion below –110 dB.

Home Audio Amplifiers

Professional PA Systems

Use Scenario: Discrete Class AB output stage in stereo integrated amplifiers delivering 100–300 W/channel into 4–8 Ω loads.

IC Role / Device Role / Timing Role: PNP power switching element in complementary symmetry output pair, handling negative half-cycle current delivery.

Use Value: Low V_CE(sat) and matched h_FE reduce crossover distortion and improve damping factor vs. unmatched transistors.

Use Scenario: High-reliability output stage in touring-grade powered loudspeaker cabinets with dynamic headroom demands.

IC Role / Device Role / Timing Role: Primary PNP output device in parallel-configured amplifier modules driving low-impedance line arrays.

Use Value: Verified SOA up to 100°C enables sustained high-SPL operation without thermal runaway during long-duration program material.

Theater Sound Systems

Studio Monitor Power Amplifiers

Use Scenario: Multi-channel distributed amplification for cinema surround channels requiring low-noise, high-dynamic-range output.

IC Role / Device Role / Timing Role: Linear PNP output transistor in regulated power supply–fed amplifier stages with tight THD+N targets.

Use Value: High BV_CEO and gain linearity preserve signal integrity across 20 Hz–20 kHz, critical for cinematic audio fidelity.

Use Scenario: Reference-grade bi-amplified studio monitor power sections demanding ultra-low IMD and DC offset stability.

IC Role / Device Role / Timing Role: Final PNP gain stage in fully discrete, zero-feedback topology with precision emitter degeneration.

Use Value: Tight h_FE matching with MJW0281AG minimizes channel imbalance and intermodulation distortion below –110 dB.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJW0302A	Same die, identical electrical specs; MJW0302AG is the same device - 'G' suffix denotes tape-and-reel packaging per onsemi standard	No functional difference; both rated for identical audio and linear applications	Select MJW0302AG for automated SMT-compatible assembly; MJW0302A for manual or rail-based prototyping
STP16PF10	Lower V_CEO (100 V), higher R_θJC (1.5°C/W), MOSFET-based (not bipolar); lacks gain linearity and SOA continuity	Not suitable for linear Class AB; limited to switching or Class D output stages	Only consider for cost-sensitive switching applications where bipolar linearity and SOA are not required

Compared with MJW0302AG, MJW0302A offers identical performance in all electrical and thermal parameters - differing only in packaging format. STP16PF10 provides lower-cost switching capability but cannot replicate MJW0302AG's linear gain behavior, SOA robustness, or audio-grade linearity, making it unsuitable for high-fidelity analog output stages.

Availability

MJW0302AG is available at Aetrix Electronics and suitable for high-end consumer audio products, professional public address systems, and theater sound systems requiring stable component supply and long-term manufacturing continuity.

Supply support for MJW0302AG 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 MJW0302AG belongs to onsemi's legacy Power Bipolar Transistor product line, engineered specifically for high-fidelity linear audio amplification and demanding analog power control applications where SOA, gain matching, and thermal reliability are critical.

FAQ

What is the maximum continuous collector current rating for the MJW0302AG?

The MJW0302AG has a maximum continuous collector current (I_C) rating of 15 A at case temperature T_C = 25°C. This rating decreases with rising case temperature per the derating curve in Figure 1; at T_C = 100°C, the usable I_C drops to approximately 9 A. Proper heatsinking maintaining T_C ≤ 80°C is essential to sustain near-rated current in real-world MJW0302AG deployments.

Is the MJW0302AG pin-compatible with the MJW0281AG?

Yes - the MJW0302AG and MJW0281AG share identical TO-247 (Case 340L) packages and pinout: Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter. Their complementary polarity (PNP vs. NPN) and matched h_FE characteristics make them a purpose-designed pair for symmetrical amplifier output stages. No PCB layout changes are needed when using both in the same design.

Does the MJW0302AG require a heatsink, and what thermal resistance is recommended?

Yes, the MJW0302AG requires an externally mounted heatsink due to its 150 W power dissipation rating. With a junction-to-case thermal resistance (R_θJC) of 0.83°C/W, a typical design targeting T_J ≤ 130°C at 100 W dissipation needs total system thermal resistance (R_θJA) ≤ 1.3°C/W - implying a heatsink + interface resistance of ≤ 0.47°C/W. Forced airflow or oversized finned heatsinks are recommended for sustained MJW0302AG operation above 50 W.

What is the safe operating area (SOA) limit for the MJW0302AG at 100°C case temperature?

At T_C = 100°C, the MJW0302AG's SOA (per Figure 2) limits simultaneous V_CE and I_C to approximately 120 V / 8 A in DC operation, or up to 260 V / 3 A for short pulses (<5 ms). This derated SOA ensures reliability under transient overload conditions in audio amplifiers. Exceeding these boundaries risks secondary breakdown - always verify operating points against the published SOA graph for the specific MJW0302AG application.

Can the MJW0302AG be used in Class D amplifier output stages?

No - the MJW0302AG is optimized for linear Class AB operation, not switching. Its relatively slow turn-off characteristics, lack of built-in anti-parallel diode, and SOA-focused design make it unsuitable for high-frequency PWM switching in Class D topologies. For such applications, MOSFETs like the STP16PF10 or dedicated gate drivers paired with fast-switching bipolar devices are preferred over the MJW0302AG.

MJW0302AG Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-247-3

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 15 A

Voltage - Collector Emitter Breakdown (Max):: 260 V

Vce Saturation (Max) @ Ib, Ic:: 1V @ 500mA, 5A

Current - Collector Cutoff (Max):: 10µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 75 @ 3A, 5V

Power - Max:: 150 W

Frequency - Transition:: 30MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-247-3

MJW0302AG FAQ

1.How can I place an order for MJW0302AG through Aetrix?

Please submit a Request for Quotation (RFQ) for MJW0302AG 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 MJW0302AG reliable?

The price and inventory of MJW0302AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJW0302AG is usually 5 days.

3.What payment methods are accepted for MJW0302AG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJW0302AG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MJW0302AG?

MJW0302AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MJW0302AG 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 MJW0302AG?

For technical support, including MJW0302AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJW0302AG requirements.

6.How does Aetrix verify that MJW0302AG is sourced from the original manufacturer or authorized distributors?

All MJW0302AG 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 MJW0302AG meets industry standards.

7.What is the process for return or replacement of MJW0302AG?

All MJW0302AG units undergo pre-shipment inspection (PSI). If there is an issue with MJW0302AG, 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 MJW0302AG part is unused and in its original packaging.

Return procedure for MJW0302AG:

1.Submit a request within 90 days.

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

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