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onsemi NJVMJK31CTWG
- Part No.:
- NJVMJK31CTWG
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- SOT-1023, 4-LFPAK
- Datasheet:
-
NJVMJK31CTWG.pdf
- Description:
- TRANS NPN 100V 3A LFPAK4
- Quantity:
- Payment:
- Shipping:
Inventory:5,756
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Product details
Overview
NJVMJK31CTWG from onsemi is an automotive-grade NPN bipolar junction transistor rated for 100 V VCEO, 3 A continuous collector current, and optimized for power switching in regulators, DC-DC converters, and instrument cluster drivers. Housed in LFPAK4 (5 × 6 mm) package with RθJC = 2.4 °C/W, it supports high-reliability airbag deployment and powertrain control units.
For engineers reviewing the NJVMJK31CTWG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q101 qualification, 100 V blocking capability, 3 A IC rating, thermal performance in LFPAK4, and complementary PNP pairing with MJK32C.
Technical Context
This NPN power transistor operates in linear and saturated switching modes with VCE(sat) ≤ 1.2 V at IC = 3 A / IB = 0.375 A and hFE = 10–60 across IC = 1–3 A. Its fT = 3 MHz enables moderate-speed switching in automotive power stages.
Designed for surface-mount use on FR4 with 6 cm² 2 oz. Cu pad, it delivers 2.7 W total power dissipation at TA = 25°C and supports transient thermal response down to 0.000001 sec pulse width per Figure 9.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 100 V - Sustains full battery+ load dump transients in 12 V automotive systems |
| IC (cont.) | 3 A - Supports medium-power solenoid, relay, and LED driver loads |
| VCE(sat) | ≤1.2 V @ 3 A - Minimizes conduction loss and self-heating in switching applications |
| RθJC | 2.4 °C/W - Enables efficient heat transfer to heatsink or PCB copper in compact layouts |
| hFE | 10–60 @ IC = 1–3 A - Provides predictable base drive requirements for robust gate/switch control |
| fT | 3 MHz - Suitable for PWM frequencies up to ~300 kHz with acceptable gain margin |
| TJ range | −65 to +150°C - Meets under-hood temperature requirements for engine bay modules |
Pinout & Package
Package: LFPAK4 (Case 760AB), 5 × 6 mm surface-mount, 4-terminal configuration with exposed drain pad (pin 4) for thermal and electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input requiring ~0.375 A drive for full saturation at 3 A collector current |
| 2 | Collector | Main high-side or low-side power path terminal; electrically tied to exposed pad (pin 4) |
| 3 | Emitter | Reference return node; forms low-impedance path to ground plane or shunt resistor |
| 4 | Exposed Pad (Drain) | Thermal and electrical connection to collector; must be soldered to ≥6 cm² 2 oz. Cu for rated RθJC |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and safety-critical modules including airbag controllers |
| LFPAK4 thermal performance | 2.4 °C/W RθJC enables >2× power density vs. TO-252 in same footprint |
| Complementary PNP pair | MJK32C shares identical LFPAK4 package and thermal specs for H-bridge and push-pull designs |
| Pb-free, halogen-free | RoHS-compliant construction meets global automotive environmental compliance mandates |
Applications
| Engine Control Unit (ECU) Injector Driver | Automotive Instrument Cluster Backlight |
|---|---|
Use Scenario: Driving 12 V fuel injector coils with peak currents up to 3 A and 1 ms pulse width. IC Role / Device Role / Timing Role: High-current NPN switch controlling coil energization/de-energization timing. Use Value: Low VCE(sat) reduces coil driver losses; AEC-Q101 ensures reliability over 15-year vehicle lifetime. | Use Scenario: Regulating brightness of LCD backlight LEDs in digital dashboards. IC Role / Device Role / Timing Role: Linear or PWM-controlled current sink for constant-current LED strings. Use Value: Stable hFE across temperature enables precise analog dimming; LFPAK4 thermal design prevents thermal runaway. |
| Passive Restraint System (Airbag) Squib Driver | 12 V DC-DC Converter Primary Switch |
Use Scenario: Delivering controlled 2–3 A discharge pulses to pyrotechnic squibs during crash events. IC Role / Device Role / Timing Role: Fast-turn-on, high-reliability power switch triggered by safety microcontroller. Use Value: −65 to +150°C operating range guarantees function during extreme cold starts and hot under-hood conditions. | Use Scenario: High-side switching element in non-isolated buck converter supplying 5 V/2 A to infotainment subsystems. IC Role / Device Role / Timing Role: Main power stage transistor operating at 250 kHz PWM frequency. Use Value: 3 MHz fT provides sufficient gain margin; 100 V rating accommodates load dump transients up to ISO 7637-2 Pulse 5a. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJK31CTW | Same die, non-automotive grade; lacks NJV prefix, AEC-Q101 qualification, and PPAP capability | Restricted to industrial or consumer applications without automotive reliability requirements | Select when AEC-Q101 is not mandated and cost sensitivity outweighs qualification needs |
| STN3PF10 | 100 V, 3.5 A, TO-220FP package; higher RθJA (60 °C/W), no AEC-Q101 certification | Requires larger heatsink; unsuitable for space-constrained automotive modules | Consider only for legacy through-hole designs where LFPAK4 rework is prohibitive |
Compared with MJK31CTW and STN3PF10, NJVMJK31CTWG uniquely combines AEC-Q101 qualification, LFPAK4's 2.4 °C/W thermal resistance, and automotive traceability-making it the only option qualified for safety-critical airbag and powertrain functions in modern E/E architectures.
Availability
NJVMJK31CTWG is available at Aetrix Electronics and suitable for automotive powertrain control, airbag deployment systems, and instrument cluster backlight regulation requiring stable component supply across extended production lifecycles.
Supply support for NJVMJK31CTWG 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 focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications, with leadership in power management and signal processing.
The MJK31C family-including NJVMJK31CTWG-is engineered specifically for AEC-Q101-compliant automotive power switching, emphasizing thermal robustness, transient voltage tolerance, and long-term reliability in harsh environments.
FAQ
What is the maximum continuous collector current rating for NJVMJK31CTWG?
The NJVMJK31CTWG is rated for 3 A continuous collector current (IC) at TA = 25°C with proper PCB thermal management. Derating applies above 25°C ambient, following the curve in Figure 8 of the datasheet. At 100°C ambient, usable IC drops to approximately 1.5 A due to thermal limits. This rating assumes use on FR4 with a 6 cm², 2 oz. copper collector pad as specified in Note 1.
Is NJVMJK31CTWG qualified for automotive applications?
Yes, NJVMJK31CTWG carries the NJV prefix indicating automotive-specific site and control change requirements, and is fully AEC-Q101 qualified and PPAP capable. It is explicitly intended for automotive end applications including airbag deployment, powertrain control units, and instrument clusters-as stated in the official onsemi datasheet.
What package type does NJVMJK31CTWG use, and why is it significant?
NJVMJK31CTWG uses the LFPAK4 (Case 760AB) 5 × 6 mm surface-mount package. Its significance lies in the 2.4 °C/W junction-to-case thermal resistance-over 2× better than standard TO-252-and integrated exposed drain pad that serves both thermal and electrical collector connection. This enables higher power density and simplified thermal design in space-constrained automotive modules.
What is the complementary PNP transistor for NJVMJK31CTWG?
The complementary PNP transistor for NJVMJK31CTWG is the MJK32C, which shares identical LFPAK4 packaging, thermal characteristics (RθJC = 2.4 °C/W), and automotive qualification. This pairing allows matched performance in H-bridge motor drivers, push-pull output stages, and dual-rail power switches where NPN/PNP symmetry is critical.
Does NJVMJK31CTWG meet RoHS and environmental compliance standards?
Yes, NJVMJK31CTWG is Pb-free, halogen-free/BFR-free, and fully RoHS compliant per EU Directive 2011/65/EU. The "NJV" prefix and datasheet confirm compliance with automotive environmental mandates, including JESD204 and onsemi's internal green policy-ensuring suitability for global vehicle production without restriction.
NJVMJK31CTWG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-1023, 4-LFPAK
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 100 V
- Vce Saturation (Max) @ Ib, Ic:
- 1.2V @ 375mA, 3A
- Current - Collector Cutoff (Max):
- 50µA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 25 @ 1A, 4V
- Power - Max:
- -
- Frequency - Transition:
- 3MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK4 (5x6)
NJVMJK31CTWG FAQ
1.How can I place an order for NJVMJK31CTWG through Aetrix?
Please submit a Request for Quotation (RFQ) for NJVMJK31CTWG 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 NJVMJK31CTWG reliable?
The price and inventory of NJVMJK31CTWG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NJVMJK31CTWG is usually 5 days.
3.What payment methods are accepted for NJVMJK31CTWG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NJVMJK31CTWG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NJVMJK31CTWG?
NJVMJK31CTWG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NJVMJK31CTWG 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 NJVMJK31CTWG?
For technical support, including NJVMJK31CTWG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NJVMJK31CTWG requirements.
6.How does Aetrix verify that NJVMJK31CTWG is sourced from the original manufacturer or authorized distributors?
All NJVMJK31CTWG 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 NJVMJK31CTWG meets industry standards.
7.What is the process for return or replacement of NJVMJK31CTWG?
All NJVMJK31CTWG units undergo pre-shipment inspection (PSI). If there is an issue with NJVMJK31CTWG, 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 NJVMJK31CTWG part is unused and in its original packaging.
Return procedure for NJVMJK31CTWG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NJVMJK31CTWG Tags
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