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onsemi MJW0281AG
- Part No.:
- MJW0281AG
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-247-3
- Datasheet:
-
MJW0281AG.pdf
- Description:
- TRANS NPN 260V 15A TO-247-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,259
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Product details
Overview
MJW0281AG from onsemi is an NPN silicon power bipolar transistor designed for high-fidelity audio amplifier output stages and linear power applications. It delivers 15 A continuous collector current, 260 V CEO rating, 150 W power dissipation at TC = 25°C, and 30 MHz fT bandwidth - enabling robust, low-distortion amplification in symmetrical push-pull configurations.
For engineers reviewing the MJW0281AG datasheet, pinout, applications, or equivalent options, key selection criteria include safe operating area (SOA) performance, gain linearity across 50 mA–5 A, VCE(sat) ≤ 1.0 V at IC = 5 A/IB = 0.5 A, and TO-247 thermal resistance of 0.83°C/W.
Technical Context
The MJW0281AG operates as a linear-output NPN power switch with complementary pairing to MJW0302A (PNP), supporting Class AB amplifier topologies. Its SOA is validated up to DC and pulse widths ≤ 5 ms, and its hFE remains stable (75–150) from 0.5 A to 3.0 A at VCE = 5 V.
Thermal design relies on junction-to-case conduction via the TO-247 package's metal tab (RθJC = 0.83°C/W), while dynamic behavior is characterized by Cob ≤ 400 pF and fT ≥ 30 MHz under standard test conditions (IC = 1 A, VCE = 5 V, ftest = 1 MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 260 V - supports rail voltages up to ±120 V in dual-supply audio amplifiers without breakdown |
| IC (cont.) | 15 A - enables >300 W RMS output into 4 Ω loads with appropriate heatsinking |
| PD @ TC=25°C | 150 W - defines maximum steady-state power handling before thermal derating begins |
| fT | 30 MHz - ensures sufficient gain margin for stable feedback loop operation up to 100 kHz |
| hFE (min–max) | 75–150 at IC = 0.5–3.0 A - provides predictable biasing and gain matching within complementary pairs |
| VCE(sat) | ≤ 1.0 V at IC = 5 A / IB = 0.5 A - minimizes conduction loss and thermal stress in output stage |
| RθJC | 0.83°C/W - allows direct mounting to heatsink with verified thermal path for junction temperature control |
Pinout & Package
Package: TO-247 (Case 340L, Style 3), isolated collector tab, screw-mount compatible, 3-pin through-hole power package with 20.32 mm × 15.75 mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Control input terminal | Receives drive current to modulate collector-emitter conduction; requires external base resistor or driver stage |
| 2 (Collector) | High-current output node | Connected to positive rail in common-emitter output stage; electrically tied to metal tab for thermal conduction |
| 3 (Emitter) | Current return path | Typically grounded or connected to output node in emitter-follower configuration; carries full load current |
Key Features
| Feature | Design Value |
|---|---|
| Exceptional SOA | Validated up to DC and 5 ms pulses - enables reliable operation under transient overload without secondary breakdown |
| NPN/PNP gain matching | ≤ 10% hFE variation between MJW0281AG and MJW0302A across 50 mA–5 A - ensures symmetrical distortion cancellation |
| High BVCEO | 260 V rating - supports high-voltage audio rails and industrial linear regulators without derating |
| Gain linearity | Stable hFE vs. IC curve (Fig. 3) - preserves signal fidelity and reduces harmonic distortion in Class AB stages |
| High fT | ≥ 30 MHz - maintains open-loop gain at ultrasonic frequencies for precise compensation and stability |
Applications
| Home Audio Amplifiers | Professional PA Systems |
|---|---|
Use Scenario: Dual-rail ±80 V Class AB power amplifier delivering 200 W into 8 Ω loads for premium home theater receivers. IC Role / Device Role / Timing Role: NPN output transistor in push-pull pair, conducting during positive half-cycle of audio waveform. Use Value: Low VCE(sat) and linear hFE reduce crossover distortion and thermal drift, improving THD+N below 0.05%. | Use Scenario: High-reliability 500 W public address amplifier used in stadium sound reinforcement with forced-air cooling. IC Role / Device Role / Timing Role: Primary NPN switching element in quasi-complementary output stage driving 70 V line transformers. Use Value: Robust SOA and 260 V rating prevent failure during loudspeaker impedance dips and long-duration transients. |
| Theater Sound Systems | Studio Monitor Power Stages |
Use Scenario: Multi-channel distributed audio system powering cinema surround channels with dynamic peak demands exceeding 30 A. IC Role / Device Role / Timing Role: High-current NPN device in paralleled output configuration with active current sharing. Use Value: Tight hFE matching with MJW0302A ensures balanced current division and prevents thermal runaway. | Use Scenario: Bi-amplified near-field studio monitor requiring ultra-low-noise, wide-bandwidth power delivery to 1-inch compression drivers. IC Role / Device Role / Timing Role: Final gain stage transistor in discrete op-amp-based power buffer topology. Use Value: 30 MHz fT and low Cob support flat frequency response beyond 100 kHz, preserving transient accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power bipolar transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJW21193G | Higher VCEO (350 V), higher hFE (80–200), same TO-247 package but different pinout (Base/Collector/Emitter = 1/2/3 vs. MJW0281AG's 1/2/3) | Targeted at higher-voltage industrial SMPS and RF linear amplifiers, not optimized for audio SOA | Select when >300 V blocking or wider hFE range is required; verify PCB layout compatibility due to identical pin numbering but distinct internal leadframe routing |
| 2SC5200 | Lower VCEO (230 V), lower PD (150 W), similar fT (30 MHz), TO-3P package (larger footprint, no isolated tab) | Common in legacy Japanese audio designs; lacks guaranteed gain matching with complementary PNP | Use where cost sensitivity outweighs SOA precision; requires mechanical redesign for TO-3P mounting and thermal interface |
Compared with MJW0281AG, MJW21193G offers higher voltage headroom but diverges in SOA optimization and pin functional alignment, while 2SC5200 trades voltage margin and thermal efficiency for legacy compatibility - neither is pin-compatible nor gain-matched out-of-box.
Availability
MJW0281AG is available at Aetrix Electronics and suitable for high-end consumer audio products, professional PA systems, theater sound systems, and studio monitor power stages requiring stable component supply, long-term BOM continuity, and traceable sourcing.
Supply support for MJW0281AG 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 focused on energy-efficient innovation for automotive, industrial, cloud, and intelligent edge applications.
The MJW0281AG belongs to onsemi's PowerBase™ family of audio-grade power transistors, engineered specifically for low-distortion, thermally robust linear amplifier output stages with guaranteed complementary pairing and SOA validation.
FAQ
What is the maximum continuous collector current rating for the MJW0281AG?
The MJW0281AG is rated for 15 A continuous collector current (IC) at case temperature TC = 25°C. Derating is required above 25°C per Figure 1 - for example, at TC = 100°C, the usable IC drops to approximately 7.5 A. This rating assumes proper heatsinking and adherence to the SOA limits defined in Figure 2.
Does the MJW0281AG have a specified safe operating area (SOA) for DC operation?
Yes, the MJW0281AG SOA is explicitly defined for DC operation in Figure 2 of the datasheet. It supports up to 15 A at VCE ≤ 10 V and scales inversely with voltage - e.g., 3 A at 100 V - with no secondary breakdown limitation under recommended bias and thermal conditions.
Is the MJW0281AG pin-compatible with the MJW0302A?
No - the MJW0281AG (NPN) and MJW0302A (PNP) share identical TO-247 package dimensions and pin numbering (Base/Collector/Emitter = Pins 1/2/3), but their electrical polarity and bias requirements differ. They are complementary *functional* partners, not pin-swappable devices; both must be used together in matched pairs for push-pull operation.
What is the typical DC current gain (hFE) of the MJW0281AG at 1 A collector current?
The MJW0281AG exhibits hFE between 75 and 150 at IC = 1.0 A and VCE = 5.0 V, per the Electrical Characteristics table. Measured values typically center near 110–125 in production units, supporting stable bias network design for Class AB quiescent current setting.
Can the MJW0281AG be used in switching power supplies?
The MJW0281AG is optimized for linear operation - its SOA, gain linearity, and thermal design prioritize audio fidelity over fast switching. While it can function in low-frequency (<50 kHz) linear regulators or quasi-resonant converters, it is not recommended for hard-switched SMPS due to lack of specified switching times, charge storage data, or avalanche ruggedness ratings.
MJW0281AG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- 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
MJW0281AG FAQ
1.How can I place an order for MJW0281AG through Aetrix?
Please submit a Request for Quotation (RFQ) for MJW0281AG 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 MJW0281AG reliable?
The price and inventory of MJW0281AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJW0281AG is usually 5 days.
3.What payment methods are accepted for MJW0281AG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJW0281AG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MJW0281AG?
MJW0281AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MJW0281AG 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 MJW0281AG?
For technical support, including MJW0281AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJW0281AG requirements.
6.How does Aetrix verify that MJW0281AG is sourced from the original manufacturer or authorized distributors?
All MJW0281AG 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 MJW0281AG meets industry standards.
7.What is the process for return or replacement of MJW0281AG?
All MJW0281AG units undergo pre-shipment inspection (PSI). If there is an issue with MJW0281AG, 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 MJW0281AG part is unused and in its original packaging.
Return procedure for MJW0281AG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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