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

onsemi MJW21195

Name: MJW21195
Brand: onsemi
SKU: MJW21195
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MJW21195

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-247-3

Datasheet:: MJW21195.pdf

Description:: TRANS PNP 250V 16A TO-247-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MJW21195 from onsemi is a PNP silicon power transistor designed for high-power audio output stages, disk head positioners, and linear amplifier applications. It features 250 V_CEO, 16 A continuous collector current, 200 W power dissipation at T_C = 25°C, Perforated Emitter technology, and 20 minimum DC current gain at 8 A.

For engineers reviewing the MJW21195 datasheet, pinout, applications, or equivalent options, key selection criteria include safe operating area (2.25 A @ 80 V, 1 s), THD characterization (≤0.08% matched-pair), thermal resistance (0.7°C/W junction-to-case), and TO-247 package compatibility with high-current heatsinking requirements.

Technical Context

The MJW21195 operates as a linear-mode PNP bipolar junction transistor with base-controlled current amplification. Its Perforated Emitter construction improves thermal stability and gain linearity under high-current conditions, supporting precise analog control in audio and positioning circuits.

It delivers characterized total harmonic distortion performance (≤0.08% at 1 kHz, 100 W RMS) when used in matched-pair configurations, and maintains SOA integrity up to 400 V_CEX with base-emitter clamping at 1.5 V, enabling robust operation in Class AB and linear servo drivers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	250 Vdc - Maximum collector-emitter voltage before breakdown under open-base conditions; defines rail voltage limit in audio output stages.
I_C Continuous	16 Adc - Sustained collector current capability; supports high-power Class AB amplifier designs without forced cooling.
P_D @ T_C = 25°C	200 W - Total power dissipation at case temperature of 25°C; requires heatsink design with ≤0.7°C/W thermal resistance.
h_FE Min	20 @ I_C = 8 Adc - Minimum DC current gain ensures predictable base drive sizing for 8–16 A load currents.
R_JC	0.7 °C/W - Junction-to-case thermal resistance; determines maximum allowable temperature rise across the die-to-heatsink interface.
THD Max	0.08% @ matched pair - Measured total harmonic distortion at 1 kHz, 100 W RMS; enables low-distortion audio reproduction.
f_T	4 MHz - Current gain-bandwidth product; supports stable operation up to mid-audio frequencies with adequate phase margin.

Pinout & Package

Package: TO-247 (Case 340L), 3-terminal through-hole power package with isolated mounting tab (collector-connected). Designed for mechanical robustness and thermal transfer in high-power linear applications.

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Control input terminal	Receives base current to regulate collector-emitter conduction; requires current-limited drive due to 5 A max continuous rating.
2 (Collector)	Main current output terminal	Connected to heatsink tab; carries full load current and must be electrically isolated if heatsink is grounded.
3 (Emitter)	Main current return terminal	Serves as reference node for emitter-follower or common-emitter topologies; tied to negative rail in PNP output stage.

Key Features

Feature	Design Value
Perforated Emitter technology	Enhances thermal uniformity and gain linearity under high-current bias, reducing hot-spot formation in linear operation.
High SOA: 2.25 A @ 80 V, 1 s	Enables reliable transient handling in audio clipping events and disk actuator overtravel without second-breakdown failure.
Total Harmonic Distortion characterized	Validated ≤0.08% THD in matched-pair configuration at 1 kHz/100 W RMS-critical for high-fidelity audio amplifiers.
h_FE ≥20 @ 8 A	Ensures consistent base drive requirements across production lots, simplifying bias network design in high-current output stages.
Pb-free TO-247 option (MJW21195G)	Meets RoHS compliance requirements without derating; identical thermal and electrical specs to standard version.

Applications

High-Fidelity Audio Amplifiers	Disk Head Positioning Systems
Use Scenario: Final output stage in Class AB stereo power amplifiers delivering ≥100 W RMS into 4–8 Ω loads. IC Role / Device Role / Timing Role: PNP complementary power transistor in push-pull output pair, sourcing current to load during negative half-cycle. Use Value: Low THD (≤0.08% matched) and high SOA ensure clean signal reproduction and reliability during dynamic transients.	Use Scenario: Linear current driver for voice coil actuators in HDD and optical disk drive head positioning. IC Role / Device Role / Timing Role: High-precision linear current source controlling magnetic field strength in closed-loop servo systems. Use Value: Excellent gain linearity and thermal stability enable sub-micron positioning accuracy under varying ambient conditions.
Linear Regulator Pass Elements	Industrial Servo Motor Drivers
Use Scenario: Series pass transistor in high-current, low-noise linear voltage regulators for test equipment and analog instrumentation. IC Role / Device Role / Timing Role: Voltage-controlled current sink regulating output voltage via feedback loop; dissipates excess power as heat. Use Value: 200 W power rating and 0.7°C/W R_JC support stable regulation at >10 A output with minimal thermal drift.	Use Scenario: H-bridge high-side PNP switch in analog-controlled servo motor drivers for robotics and CNC motion control. IC Role / Device Role / Timing Role: High-voltage, high-current switching element enabling bidirectional torque control in brushed DC motors. Use Value: 400 V_CEX rating and 250 V_CEO allow operation with 200+ VDC bus rails while maintaining SOA integrity during commutation.

High-Fidelity Audio Amplifiers

Disk Head Positioning Systems

Use Scenario: Final output stage in Class AB stereo power amplifiers delivering ≥100 W RMS into 4–8 Ω loads.

IC Role / Device Role / Timing Role: PNP complementary power transistor in push-pull output pair, sourcing current to load during negative half-cycle.

Use Value: Low THD (≤0.08% matched) and high SOA ensure clean signal reproduction and reliability during dynamic transients.

Use Scenario: Linear current driver for voice coil actuators in HDD and optical disk drive head positioning.

IC Role / Device Role / Timing Role: High-precision linear current source controlling magnetic field strength in closed-loop servo systems.

Use Value: Excellent gain linearity and thermal stability enable sub-micron positioning accuracy under varying ambient conditions.

Linear Regulator Pass Elements

Industrial Servo Motor Drivers

Use Scenario: Series pass transistor in high-current, low-noise linear voltage regulators for test equipment and analog instrumentation.

IC Role / Device Role / Timing Role: Voltage-controlled current sink regulating output voltage via feedback loop; dissipates excess power as heat.

Use Value: 200 W power rating and 0.7°C/W R_JC support stable regulation at >10 A output with minimal thermal drift.

Use Scenario: H-bridge high-side PNP switch in analog-controlled servo motor drivers for robotics and CNC motion control.

IC Role / Device Role / Timing Role: High-voltage, high-current switching element enabling bidirectional torque control in brushed DC motors.

Use Value: 400 V_CEX rating and 250 V_CEO allow operation with 200+ VDC bus rails while maintaining SOA integrity during commutation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BDW84C	Lower V_CEO (100 V), lower I_C (12 A), no THD characterization, SOA not specified beyond 1 s curves.	Restricted to ≤100 V rail applications; unsuitable for high-fidelity audio requiring <0.1% THD or disk positioners needing >200 V headroom.	Select BDW84C only for cost-sensitive, non-critical linear applications where voltage/current margins are relaxed.
MJE15034	Higher h_FE (30 min @ 8 A), same V_CEO (250 V), but lower P_D (150 W), higher R_JC (0.9°C/W), no Perforated Emitter.	Acceptable for medium-power audio and servo use, but thermal derating required above 125°C case temperature; lacks THD validation.	Choose MJE15034 when higher DC gain is prioritized over THD performance and thermal headroom is constrained.

Compared with BDW84C and MJE15034, the MJW21195 provides superior SOA (2.25 A @ 80 V, 1 s), verified THD performance (≤0.08%), and Perforated Emitter-enhanced linearity-making it the preferred choice for high-reliability, high-fidelity linear power applications demanding both precision and ruggedness.

Availability

MJW21195 is available at Aetrix Electronics and suitable for high-fidelity audio amplifiers, disk head positioners, and industrial linear regulator designs requiring stable component supply, long-term manufacturability, and traceable Pb-free sourcing options.

Supply support for MJW21195 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 is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The MJW21195 belongs to onsemi's Silicon Power Transistor product line, engineered specifically for high-linearity, high-SOA linear applications including audio output stages and precision motion control.

FAQ

What is the maximum continuous collector current rating for the MJW21195?

The MJW21195 has a maximum continuous collector current rating of 16 A at T_C = 25°C. This rating assumes proper heatsinking to maintain case temperature within limits; derating applies above 25°C at 1.43 W/°C. The MJW21195 must not exceed this current in sustained operation to avoid thermal runaway or second breakdown.

Does the MJW21195 support matched-pair operation for low-distortion audio?

Yes, the MJW21195 is characterized for matched-pair use with its complementary NPN counterpart MJW21196. When paired, the combination achieves ≤0.08% total harmonic distortion at 1 kHz and 100 W RMS output. The MJW21195 datasheet specifies matched h_FE = 50 @ 5 A/5 V, confirming factory-trimmed gain alignment critical for symmetric audio output stages.

What is the safe operating area (SOA) of the MJW21195 at 1 second pulse width?

The MJW21195 has a defined safe operating area of 2.25 A at 80 V for 1-second non-repetitive pulses, per the datasheet's SOA curve (Figure 13). This specification ensures reliable operation during transient overload conditions such as audio clipping or disk actuator overtravel, provided base drive remains forward-biased and case temperature stays within rated limits.

Is the MJW21195 available in a Pb-free package?

Yes, the MJW21195G variant is the Pb-free version of the MJW21195, packaged in the same TO-247 outline (Case 340L) with identical electrical and thermal specifications. The "G" suffix denotes RoHS-compliant termination, and the device meets JESD97 and JEDEC standards for lead-free soldering processes without performance trade-offs.

What is the thermal resistance from junction to case (R_JC) for the MJW21195?

The MJW21195 has a maximum thermal resistance of 0.7°C/W from junction to case, measured under standard mounting conditions with thermal compound and appropriate torque. This value directly determines the maximum allowable temperature rise between die and heatsink surface, and must be used with the 200 W power dissipation rating to calculate required heatsink thermal resistance for a given ambient condition.

MJW21195 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):: 16 A

Voltage - Collector Emitter Breakdown (Max):: 250 V

Vce Saturation (Max) @ Ib, Ic:: 3V @ 3.2A, 16A

Current - Collector Cutoff (Max):: 100µA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 20 @ 8A, 5V

Power - Max:: 200 W

Frequency - Transition:: 4MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-247-3

MJW21195 FAQ

1.How can I place an order for MJW21195 through Aetrix?

Please submit a Request for Quotation (RFQ) for MJW21195 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 MJW21195 reliable?

The price and inventory of MJW21195 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJW21195 is usually 5 days.

3.What payment methods are accepted for MJW21195?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJW21195 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MJW21195?

MJW21195 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MJW21195 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 MJW21195?

For technical support, including MJW21195 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJW21195 requirements.

6.How does Aetrix verify that MJW21195 is sourced from the original manufacturer or authorized distributors?

All MJW21195 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 MJW21195 meets industry standards.

7.What is the process for return or replacement of MJW21195?

All MJW21195 units undergo pre-shipment inspection (PSI). If there is an issue with MJW21195, 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 MJW21195 part is unused and in its original packaging.

Return procedure for MJW21195:

1.Submit a request within 90 days.

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

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