onsemi MJ11022G
- Part No.:
- MJ11022G
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-204AA, TO-3
- Datasheet:
-
MJ11022G.pdf
- Description:
- TRANS NPN DARL 250V 15A TO204
- Quantity:
- Payment:

- Shipping:

Inventory:7,823
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Product details
Overview
MJ11022G from onsemi is an NPN complementary Darlington silicon power transistor in TO-3 metal package, rated for 250 VCEO, 15 A continuous collector current, and 175 W power dissipation at TC = 25 °C; it delivers hFE ≥ 400 at IC = 10 A and VCE = 5 V, with VCE(sat) = 2.0 V (max) at IC = 15 A / IB = 150 mA, and is used in high-current motor control and low-frequency switching amplifiers.
For engineers reviewing the MJ11022G datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, thermal derating behavior, SOA-tested switching performance, Pb-free packaging confirmation, and validated alternatives for industrial power stage design.
Technical Context
The MJ11022G implements a monolithic Darlington pair architecture with integrated base-emitter resistor network, enabling high DC current gain while maintaining robust second-breakdown immunity. It is characterized for safe operation up to TJ = 175 °C and features 100% forward-bias SOA testing at VCE = 44 V, IC = 4.0 A, t = 250 ms.
Its dynamic performance includes td = 150 ns, tr = 1.2 μs, ts = 4.4 μs, and tf = 10.0 μs under clamped 100 V, 10 A switching conditions with IB = 100 mA; Cob = 400 pF at VCB = 10 V enables predictable turn-off behavior in inductive load circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 250 V - Sustains 250 V collector-emitter voltage before breakdown, suitable for 200 V bus applications with margin. |
| IC (cont.) | 15 A - Continuous collector current rating defines maximum steady-state output drive capability. |
| PD @ TC = 25°C | 175 W - Maximum power dissipation at case temperature 25°C; requires heatsink with RJC ≤ 0.86 °C/W. |
| hFE min | 400 @ IC = 10 A - Ensures low base drive current requirement (≤25 mA) for full-load switching. |
| VCE(sat) max | 3.4 V @ IC = 15 A - Defines conduction loss ceiling; yields ≤51 W worst-case dissipation at full current. |
| RθJC | 0.86 °C/W - Junction-to-case thermal resistance determines minimum heatsink thermal budget. |
| SOA Tested | 100% @ VCE = 44 V, IC = 4.0 A, t = 250 ms - Guarantees ruggedness against transient overload in motor commutation. |
Pinout & Package
Package: TO-204 (TO-3), metal can, Pb-free, case acts as collector terminal. Dimensions per CASE 1-07, STYLE 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Control input | Accepts base current to enable Darlington conduction; requires external current-limiting resistor in linear mode. |
| 2 (Emitter) | Power return path | Low-impedance emitter output; must be connected to system ground or low-side reference in common-emitter configuration. |
| Case (Collector) | Main power terminal | Electrically connected to collector; mounted directly to heatsink, requiring insulating washer if heatsink is grounded. |
Key Features
| Feature | Design Value |
|---|---|
| High hFE ≥ 400 | Reduces required base drive current by >4× vs. single bipolar transistors, easing gate driver design. |
| VCEO(sus) = 250 V | Supports 200 V DC bus systems with 25% voltage margin, eliminating need for snubbers in many industrial drives. |
| VCE(sat) ≤ 2.0 V (typ) @ 5 A | Minimizes conduction loss in linear-regulator or Class-A amplifier stages, improving thermal efficiency. |
| 100% FBSOA tested | Validates safe operation under simultaneous high-voltage/high-current transients, critical for motor H-bridge protection. |
| Pb-free TO-3 package | Complies with RoHS Directive 2011/65/EU without compromising thermal or mechanical robustness. |
Applications
| Industrial Motor Control | DC Power Amplifier |
|---|---|
|
Use Scenario: Driving brushed DC motors in CNC spindles and conveyor systems with 10–15 A peak load current. IC Role / Device Role / Timing Role: High-current NPN switch in half-bridge or emitter-follower output stage, handling PWM frequencies < 1 kHz. Use Value: 250 V rating accommodates back-EMF spikes up to 180 V; SOA-tested ruggedness prevents failure during stall or jam events. |
Use Scenario: Linear audio or precision DC output stage delivering ±12 V / 10 A into resistive loads. IC Role / Device Role / Timing Role: Output pass transistor in series-regulated power supply or Class-AB amplifier output stage. Use Value: Low VCE(sat) and high hFE reduce base drive complexity and improve regulation accuracy at full load. |
| Welding Power Supply | High-Current Relay Driver |
|
Use Scenario: Primary switching element in IGBT-gated arc-welding inverters requiring 12–15 A sustained current. IC Role / Device Role / Timing Role: Low-frequency (≤500 Hz) main switch controlling primary transformer current in resonant topologies. Use Value: 175 W power rating and 0.86 °C/W RθJC allow direct mounting to large aluminum heatsinks for stable thermal management. |
Use Scenario: Driving high-power electromagnetic relays (e.g., 125 A contactor coils) in PLC output modules. IC Role / Device Role / Timing Role: Final-stage Darlington switch interfacing microcontroller GPIO to inductive relay coil. Use Value: 50 VEBO rating protects against coil flyback voltage; hFE ≥ 400 ensures full saturation with ≤20 mA MCU drive current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN Darlington power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BDW93C | Lower VCEO = 100 V, lower PD = 90 W, TO-126 package, hFE ≥ 750 but not SOA-tested. | Suitable only for ≤80 V bus systems; lacks 100% SOA validation for motor surge immunity. | Select BDW93C only when voltage stress is < 80 V and space-constrained PCB layout favors TO-126. |
| TIP142 | VCEO = 100 V, PD = 125 W, TO-220 package, hFE ≥ 1000, SOA-tested per JEDEC JESD22-A108. | Limited to 100 V applications; TO-220 requires isolation hardware for heatsink mounting. | Choose TIP142 where cost-sensitive designs accept lower voltage rating and prefer surface-mount-compatible footprint. |
Compared with BDW93C and TIP142, the MJ11022G offers superior 250 V blocking capability, 175 W dissipation, and factory-verified SOA compliance-making it the only option among the three qualified for 200 V industrial motor drives without external clamping.
Availability
MJ11022G is available at Aetrix Electronics and suitable for industrial motor control, high-current DC power amplification, and welding power supply designs requiring stable component supply across extended production lifecycles.
Supply support for MJ11022G 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 logic solutions for automotive, industrial, and cloud infrastructure markets.
The MJ11022G belongs to onsemi's legacy high-power discrete transistor family, engineered specifically for ruggedized linear and switching applications demanding high VCEO, high IC, and proven SOA reliability in harsh thermal environments.
FAQ
What is the maximum junction temperature rating for the MJ11022G?
The MJ11022G has an operating junction temperature range of –65 °C to +175 °C. Its thermal resistance RθJC is 0.86 °C/W, meaning that with a 25 °C heatsink temperature and 175 W dissipation, the junction would reach exactly 175 °C-confirming the absolute upper limit is enforced by design. Derating curves in Figure 1 show allowable power reduction above 25 °C case temperature.
Is the MJ11022G pin-compatible with the MJ11022?
Yes-the MJ11022G uses the identical TO-3 mechanical outline (CASE 1-07, STYLE 1) and pin assignment as the MJ11022: Pin 1 = Base, Pin 2 = Emitter, Case = Collector. The "G" suffix denotes Pb-free plating only; all electrical, thermal, and mechanical specifications remain unchanged from the original MJ11022.
Does the MJ11022G require a base resistor in switching applications?
Yes-the MJ11022G must be driven with a current-limited base signal. For reliable saturation at IC = 15 A, IB ≥ 150 mA is required (hFE ≥ 100 minimum in saturation). A series base resistor sized to deliver ≥150 mA from the driver supply-while limiting peak current during turn-on-is mandatory to prevent secondary breakdown or excessive base dissipation.
Can the MJ11022G be used in parallel configurations?
No-Darlington transistors like the MJ11022G exhibit positive thermal feedback and non-uniform current sharing due to VBE and hFE mismatches. Parallel operation without individual emitter resistors or active current balancing will cause thermal runaway. Onsemi does not recommend or characterize the MJ11022G for paralleling.
What is the Safe Operating Area (SOA) test condition for the MJ11022G?
The MJ11022G undergoes 100% Forward Bias SOA testing at VCE = 44 V, IC = 4.0 A, pulse width = 250 ms. This validates its ability to withstand simultaneous high voltage and current transients typical of motor commutation or inductive load switching-distinct from standard DC ratings and critical for reliability in real-world industrial use.
MJ11022G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-204AA, TO-3
- Packaging:
- Tray
- Product Status:
- Active
- Transistor Type:
- NPN - Darlington
- Current - Collector (Ic) (Max):
- 15 A
- Voltage - Collector Emitter Breakdown (Max):
- 250 V
- Vce Saturation (Max) @ Ib, Ic:
- 3.4V @ 150mA, 15A
- Current - Collector Cutoff (Max):
- 1mA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 400 @ 10A, 5V
- Power - Max:
- 175 W
- Frequency - Transition:
- -
- Operating Temperature:
- -65°C ~ 200°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-204 (TO-3)
MJ11022G FAQ
1.How can I place an order for MJ11022G through Aetrix?
Please submit a Request for Quotation (RFQ) for MJ11022G 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 MJ11022G reliable?
The price and inventory of MJ11022G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJ11022G is usually 5 days.
3.What payment methods are accepted for MJ11022G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJ11022G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MJ11022G?
MJ11022G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MJ11022G 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 MJ11022G?
For technical support, including MJ11022G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJ11022G requirements.
6.How does Aetrix verify that MJ11022G is sourced from the original manufacturer or authorized distributors?
All MJ11022G 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 MJ11022G meets industry standards.
7.What is the process for return or replacement of MJ11022G?
All MJ11022G units undergo pre-shipment inspection (PSI). If there is an issue with MJ11022G, 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 MJ11022G part is unused and in its original packaging.
Return procedure for MJ11022G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MJ11022G Tags

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MMBT3906-7-F
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BC846BLT1G
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BC847B,215
Nexperia USA Inc.

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