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onsemi NJV4031NT1G
- Part No.:
- NJV4031NT1G
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
NJV4031NT1G.pdf
- Description:
- TRANS NPN 40V 3A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:2,196
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Product details
Overview
NJV4031NT1G from onsemi is an AEC-Q101 qualified NPN bipolar power transistor in SOT-223 package, rated for 40 VCEO, 3.0 AC continuous collector current, and 2.0 W total power dissipation at TA = 25°C. It delivers low VCE(sat) of 0.100 V at IC = 0.5 A / IB = 5 mA and supports automotive body control modules requiring robust thermal performance and Pb-free compliance.
For engineers reviewing the NJV4031NT1G datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, thermal derating behavior, DC current gain (hFE = 220–500), ESD robustness (HBM Class 3B), and SOT-223 terminal mapping - all critical for motor driver stage design and high-reliability linear switching circuits.
Technical Context
This NPN silicon transistor operates in linear and saturation regions with specified VBE(sat) = 1.0 V at IC = 1.0 A / IB = 0.1 A and fT = 215 MHz at IC = 500 mA / VCE = 10 V. Its safe operating area (SOA) is defined up to 10 A peak with pulse width ≤300 µs and duty cycle ≤2%.
Thermal resistance is RJA = 155 °C/W on minimal PCB pad (7.6 mm²) and 64 °C/W on 1"² copper pad, enabling flexible layout-dependent power handling. The device meets UL 94 V-0 flammability rating and is halogen-free, RoHS-compliant, and PPAP-capable for automotive production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 40 Vdc - Maximum collector-emitter voltage before breakdown under open-base conditions; defines maximum supply rail compatibility. |
| IC (cont.) | 3.0 Adc - Continuous collector current limit at TC = 25°C; determines steady-state load drive capability. |
| VCE(sat) | 0.100 Vdc @ IC=0.5A/IB=5mA - Low saturation voltage minimizes conduction loss in switching applications. |
| hFE | 220–500 - DC current gain range across IC = 0.5–3.0 A; enables predictable base drive sizing. |
| fT | 215 MHz - Current-gain bandwidth product; supports medium-frequency amplification and fast switching transitions. |
| RJA | 155 °C/W - Junction-to-ambient thermal resistance on minimal pad; sets worst-case temperature rise per watt dissipated. |
| HBM ESD | Class 3B - Human Body Model rating ≥8 kV; ensures robustness during manual handling and board assembly. |
Pinout & Package
SOT-223 (Case 318E, Style 1) surface-mount package with exposed collector tab (pins 2 and 4 internally connected) for enhanced thermal conduction. Standard marking includes "4031N" and date code; Pb-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input node; requires current-limited drive to achieve target IC based on hFE and VBE(sat). |
| 2 & 4 | Collector | Internally shorted high-current output node; electrically and thermally tied to exposed metal tab for heatsinking. |
| 3 | Emitter | Reference node for biasing; connects to ground or low-side return path in common-emitter configurations. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive underhood and body electronics per stress test requirements including temperature cycling, HTRB, and ESD. |
| UL 94 V-0 Epoxy | Flame-retardant molding compound certified for safety-critical applications where fire resistance is mandated. |
| Low VCE(sat) | 0.100 V at IC = 0.5 A reduces power loss by >50% vs. typical general-purpose transistors in saturated switch mode. |
| Pb-Free / Halogen-Free | Complies with global environmental directives (RoHS, JESD204) without compromising thermal or electrical performance. |
| High hFE Consistency | Min hFE = 220 at IC = 0.5 A ensures stable base drive margin across production lots and temperature extremes. |
Applications
| Automotive Door Lock Actuator | Industrial Fan Speed Controller |
|---|---|
Use Scenario: Drives 12 V DC brushed motor in vehicle door latch mechanism with PWM duty cycling. IC Role / Device Role / Timing Role: NPN power switch controlling motor current path between battery and ground. Use Value: Low VCE(sat) limits heat generation during extended lock/unlock cycles; AEC-Q101 qualification ensures field reliability over 15-year service life. |
Use Scenario: Regulates airflow in HVAC blower via linear current control in constant-voltage fan supply. IC Role / Device Role / Timing Role: Linear-mode pass transistor adjusting effective voltage applied to permanent-magnet DC motor. Use Value: High hFE enables precise analog current regulation with minimal base drive overhead; SOA supports transient stall currents up to 5 A. |
| LED Headlamp Dimming Circuit | Power Supply OR-ing Diode Replacement |
Use Scenario: Implements analog dimming for high-brightness LED arrays in adaptive front lighting systems (AFS). IC Role / Device Role / Timing Role: Constant-current sink regulating LED string current through emitter-follower configuration. Use Value: Tight VBE(on) tolerance (1.0 V) ensures consistent current setting across temperature; RJA = 64 °C/W allows direct mounting to aluminum heatsink. |
Use Scenario: Replaces Schottky diode in redundant 24 V DC power supply OR-ing topology to reduce forward drop and heat. IC Role / Device Role / Timing Role: Active NPN switch configured as low-loss series pass element with external base control logic. Use Value: VCE(sat) = 0.150 V at 1.0 A cuts conduction loss by 65% vs. 0.45 V Schottky; enables higher efficiency and cooler operation in compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD44H11T4G | Higher VCEO = 80 V but lower hFE min = 50; RJA = 125 °C/W on same pad size. | Better suited for 48 V industrial systems; less optimal for 12 V automotive due to reduced gain margin. | Select when higher breakdown voltage is required and base drive capability permits lower hFE. |
| ZTX653STZ | VCEO = 60 V, IC = 2.0 A, SOT-89 package; no AEC-Q101 qualification or UL 94 rating. | Limited to commercial-grade consumer or industrial equipment; unsuitable for automotive production. | Choose only for cost-sensitive non-automotive designs where qualification and flammability are not mandated. |
Compared with MJD44H11T4G and ZTX653STZ, the NJV4031NT1G offers superior combination of automotive qualification, low saturation voltage, and high DC gain - making it the preferred choice for AEC-Q101-compliant 12–24 V power switching where thermal efficiency and long-term reliability are critical.
Availability
NJV4031NT1G is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, LED lighting drivers, and redundant power OR-ing circuits requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for NJV4031NT1G 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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NJV4031NT1G belongs to onsemi's bipolar power transistor family designed specifically for high-reliability automotive and industrial switching applications demanding AEC-Q101 compliance, low conduction loss, and robust thermal performance.
FAQ
What is the maximum continuous collector current rating for NJV4031NT1G?
The NJV4031NT1G is rated for 3.0 A continuous collector current at case temperature TC = 25°C. Derating applies above 25°C per Figure 1 in the datasheet, with zero power dissipation at 150°C junction temperature. This rating assumes proper PCB copper area for thermal conduction - 1"² pad yields RJA = 64 °C/W.
Is NJV4031NT1G qualified for automotive use?
Yes, the NJV4031NT1G carries AEC-Q101 qualification and PPAP capability, confirmed in the official datasheet revision 5 (April 2024). It meets stress testing requirements for temperature cycling, high-temperature reverse bias, and ESD (HBM Class 3B), making it suitable for production automotive applications including body control modules and lighting systems.
What package type does NJV4031NT1G use and how are its pins arranged?
The NJV4031NT1G uses the SOT-223 (Case 318E) package with four terminals: Pin 1 = Base, Pins 2 & 4 = Collector (internally shorted and connected to exposed tab), Pin 3 = Emitter. The collector tab must be soldered to a thermal pad for effective heat dissipation, especially above 1 W power dissipation.
What is the typical DC current gain (hFE) of NJV4031NT1G across operating conditions?
The NJV4031NT1G exhibits hFE = 220 (min) at IC = 0.5 A, 200 (min) at IC = 1.0 A, and 100 (min) at IC = 3.0 A, all measured at VCE = 1.0 V and TC = 25°C. Typical values reach up to 500, supporting conservative base drive design across its full current range.
Does NJV4031NT1G support Pb-free and RoHS-compliant manufacturing?
Yes, NJV4031NT1G is explicitly marked as Pb-free and RoHS-compliant in the datasheet, with halogen-free/BFR-free epoxy meeting UL 94 V-0 flammability standard at 0.125" thickness. These attributes are verified and documented in the "Features" section and ordering information table.
NJV4031NT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 300mA, 3A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 1A, 1V
- Power - Max:
- 2 W
- Frequency - Transition:
- 215MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223 (TO-261)
NJV4031NT1G FAQ
1.How can I place an order for NJV4031NT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NJV4031NT1G 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 NJV4031NT1G reliable?
The price and inventory of NJV4031NT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NJV4031NT1G is usually 5 days.
3.What payment methods are accepted for NJV4031NT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NJV4031NT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NJV4031NT1G?
NJV4031NT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NJV4031NT1G 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 NJV4031NT1G?
For technical support, including NJV4031NT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NJV4031NT1G requirements.
6.How does Aetrix verify that NJV4031NT1G is sourced from the original manufacturer or authorized distributors?
All NJV4031NT1G 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 NJV4031NT1G meets industry standards.
7.What is the process for return or replacement of NJV4031NT1G?
All NJV4031NT1G units undergo pre-shipment inspection (PSI). If there is an issue with NJV4031NT1G, 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 NJV4031NT1G part is unused and in its original packaging.
Return procedure for NJV4031NT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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