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onsemi MJ15001
- Part No.:
- MJ15001
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-204AA, TO-3
- Datasheet:
-
MJ15001.pdf
- Description:
- TRANS NPN 140V 15A TO204
- Quantity:
- Payment:
- Shipping:
Inventory:2,906
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Product details
Overview
MJ15001 from onsemi is an NPN silicon power transistor designed for high-power linear applications including audio amplifiers and disk head positioners. It delivers 15 A continuous collector current, supports 140 Vdc collector-emitter voltage, and dissipates up to 200 W at TC = 25°C in a TO-204AA (TO-3) metal package with collector-connected case.
For engineers reviewing the MJ15001 datasheet, pinout, applications, or equivalent options, key selection considerations include safe operating area (SOA) integrity at high VCE/IC combinations, DC current gain (hFE = 25–150 at IC = 4 A), second breakdown limits, thermal resistance (RJC = 0.875°C/W), and complementary pairing with MJ15002 for push-pull output stages.
Technical Context
The MJ15001 operates as a linear-mode NPN bipolar junction transistor with base-controlled current amplification. Its design emphasizes rugged SOA performance-particularly under non-repetitive pulse conditions-and high DC current gain to reduce driver-stage loading in Class AB amplifier outputs.
It features a collector-connected metal case (Pin 3), electrically isolated base (Pin 1) and emitter (Pin 2), and is optimized for low-distortion complementary operation when paired with the MJ15002 PNP device. Thermal management relies on direct case mounting to heatsinks, leveraging its 0.875°C/W junction-to-case resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 140 Vdc - Maximum collector-emitter voltage before breakdown; defines upper rail limit in high-voltage audio output stages. |
| IC (continuous) | 15 Adc - Sustained output current capability; enables >100 W Class AB amplifier designs with appropriate heatsinking. |
| PD @ TC=25°C | 200 W - Total power dissipation limit at case temperature 25°C; derates 1.14 W/°C above that point. |
| hFE | 25–150 - DC current gain at IC = 4 A, VCE = 2 V; supports stable biasing and reduced base drive requirements. |
| RJC | 0.875 °C/W - Junction-to-case thermal resistance; determines minimum heatsink requirement for target TJ ≤ 200°C. |
| fT | 2.0 MHz - Current-gain bandwidth product at IC = 0.5 A; sufficient for audio-frequency linear amplification with margin. |
| Cob | 1000 pF - Output capacitance at VCB = 10 V; impacts high-frequency stability and Miller effect in wideband designs. |
Pinout & Package
Package: TO-204AA (TO-3), metal can with collector-connected case. Dimensions per onsemi CASE 1−07, STYLE 1. Mounting requires insulated hardware due to case connectivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Control input terminal | Low-impedance current-driven node; requires robust base resistor network to deliver IB up to 5 Adc for full saturation. |
| 2 (Emitter) | Current source return path | Common reference for emitter-follower or grounded-emitter configurations; carries full load current (up to 20 Adc). |
| 3 (Case) | Collector connection | Electrically tied to collector; must be mounted to heatsink with electrical isolation unless circuit topology permits common-collector grounding. |
Key Features
| Feature | Design Value |
|---|---|
| High Safe Operating Area (SOA) | Validated up to 140 VCE × 5 A (non-repetitive, 1 s) - enables reliable operation in transient-heavy audio and servo loads without secondary breakdown. |
| Complementary design support | Matched VCEO, IC, and SOA with MJ15002 - simplifies symmetric push-pull output stage layout and thermal balancing. |
| High DC current gain | hFE ≥ 25 at IC = 4 A - reduces base drive power and driver transistor sizing in high-current output stages. |
| Pb-free and RoHS-compliant | Marked "MJ15001G" - meets environmental compliance for industrial and consumer electronics manufacturing without lead exemptions. |
Applications
| High-Fidelity Audio Amplifiers | Disk Drive Actuator Drivers |
|---|---|
|
Use Scenario: Output stage of discrete Class AB power amplifiers delivering 50–150 W into 4–8 Ω loads. IC Role / Device Role / Timing Role: NPN power switch in complementary pair; handles positive half-cycle current delivery with precise linearity. Use Value: High SOA and low VCE(sat) (<1.0 V) minimize crossover distortion and thermal runaway risk during dynamic peaks. |
Use Scenario: Linear current driver for voice coil motors controlling read/write head positioning in HDDs. IC Role / Device Role / Timing Role: Precision current source regulating bidirectional coil current with fast settling and low offset. Use Value: Stable hFE across temperature and high fT ensure accurate position control within <1 µs response time. |
| Industrial Linear Power Supplies | DC Motor Control (Small Servo) |
|
Use Scenario: Pass transistor in high-current, low-noise adjustable linear regulators for test equipment and lab supplies. IC Role / Device Role / Timing Role: Series pass element modulating output voltage via base bias; dissipates variable power based on load and dropout. Use Value: 200 W rating and 200°C max junction temperature allow sustained operation under worst-case dropout conditions. |
Use Scenario: H-bridge half-bridge driver for small DC servomotors in robotics and automation systems. IC Role / Device Role / Timing Role: High-side NPN switch enabling bidirectional torque control when paired with PNP complement. Use Value: Robust second-breakdown immunity prevents failure during motor stall or inductive kickback events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 2N3055 | Lower VCEO (60 V), lower hFE (20–100), higher RJC (1.5°C/W); TO-3 package but older process. | Suitable only for ≤60 V supply rails; less suitable for modern high-rail audio or precision servo use. | Select only if legacy compatibility or cost sensitivity outweighs voltage/headroom requirements. |
| TIP35C | Higher VCEO (100 V), lower PD (125 W), plastic TO-218 package; no metal case for collector connection. | Limited to medium-power linear applications; lacks MJ15001's SOA robustness at high VCE/IC combinations. | Prefer where PCB-mount convenience matters more than ultimate SOA or thermal performance. |
Compared with 2N3055 and TIP35C, the MJ15001 provides superior voltage headroom (140 V), higher power handling (200 W), and verified SOA integrity for demanding linear applications-making it the preferred choice where reliability under transient stress is critical.
Availability
MJ15001 is available at Aetrix Electronics and suitable for high-fidelity audio amplifiers, disk drive actuator drivers, and industrial linear power supplies requiring stable component supply and long-term manufacturability assurance.
Supply support for MJ15001 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 power management, analog, sensor, and logic solutions for automotive, industrial, and cloud infrastructure markets.
The MJ15001 belongs to onsemi's legacy high-power bipolar transistor family, engineered specifically for rugged linear operation in audio, servo, and precision power regulation-prioritizing SOA, thermal stability, and complementary pairing fidelity.
FAQ
What is the maximum continuous collector current rating for the MJ15001?
The MJ15001 has a maximum continuous collector current (IC) rating of 15 Adc at TC = 25°C. This value decreases with rising case temperature due to thermal derating of 1.14 W/°C. At TC = 100°C, usable IC drops to approximately 6.2 A to maintain safe junction temperature below 200°C. The MJ15001 must be mounted on an adequately sized heatsink to sustain rated current in real-world conditions.
Is the MJ15001 pin-compatible with the MJ15002?
No-the MJ15001 (NPN) and MJ15002 (PNP) share identical TO-204AA (TO-3) packaging and pinout (Base-Pin 1, Emitter-Pin 2, Collector-case-Pin 3), but they are complementary-not pin-compatible-devices. Their electrical polarities differ, so direct substitution would cause circuit failure. They are intended for matched push-pull output stages, not interchangeable use. The MJ15001 must be used with its designated PNP counterpart, not as a drop-in replacement for the MJ15002.
Does the MJ15001 have a built-in diode or protection circuitry?
No, the MJ15001 is a discrete NPN bipolar junction transistor with no integrated protection diodes, thermal shutdown, or current limiting. It contains only the core BJT structure: emitter, base, and collector regions. External flyback diodes, base-emitter clamps, and current-sensing resistors must be added per application requirements. This absence of internal protection contributes to its high SOA and linearity but places full responsibility for safe operation on the external circuit design.
What is the thermal resistance from junction to case (RJC) for the MJ15001?
The MJ15001 has a specified thermal resistance of RJC = 0.875°C/W from junction to case, measured under standard mounting conditions. This value assumes proper mechanical interface (e.g., thermal compound and uniform pressure) between the metal case and heatsink. Exceeding recommended mounting torque or using inadequate thermal interface material will degrade actual RJC, increasing junction temperature and reducing safe operating margins for the MJ15001.
Can the MJ15001 be used in switching applications?
The MJ15001 is optimized for linear operation-not high-speed switching. Its fT of 2.0 MHz and relatively high Cob (1000 pF) limit switching efficiency above ~100 kHz. While it can function as a slow switch (e.g., in lamp dimmers or relay drivers), its second-breakdown vulnerability and lack of optimized charge storage make it unsuitable for PWM inverters or SMPS. For such uses, purpose-built MOSFETs or IGBTs are strongly preferred over the MJ15001.
MJ15001 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-204AA, TO-3
- Packaging:
- Tray
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 15 A
- Voltage - Collector Emitter Breakdown (Max):
- 140 V
- Vce Saturation (Max) @ Ib, Ic:
- 1V @ 400mA, 4A
- Current - Collector Cutoff (Max):
- 250µA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 25 @ 4A, 2V
- Power - Max:
- 200 W
- Frequency - Transition:
- 2MHz
- Operating Temperature:
- -65°C ~ 200°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-204 (TO-3)
MJ15001 FAQ
1.How can I place an order for MJ15001 through Aetrix?
Please submit a Request for Quotation (RFQ) for MJ15001 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 MJ15001 reliable?
The price and inventory of MJ15001 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJ15001 is usually 5 days.
3.What payment methods are accepted for MJ15001?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJ15001 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MJ15001?
MJ15001 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MJ15001 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 MJ15001?
For technical support, including MJ15001 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJ15001 requirements.
6.How does Aetrix verify that MJ15001 is sourced from the original manufacturer or authorized distributors?
All MJ15001 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 MJ15001 meets industry standards.
7.What is the process for return or replacement of MJ15001?
All MJ15001 units undergo pre-shipment inspection (PSI). If there is an issue with MJ15001, 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 MJ15001 part is unused and in its original packaging.
Return procedure for MJ15001:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MJ15001 Tags
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MMBT3906LT1G
onsemi
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MMBT3906-7-F
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MMBT2222A-7-F
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BC846BLT1G
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BC847B,215
Nexperia USA Inc.
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