Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

onsemi NJVMJD128T4G

Name: NJVMJD128T4G
Brand: onsemi
SKU: NJVMJD128T4G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: NJVMJD128T4G

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: NJVMJD128T4G.pdf

Description:: TRANS PNP DARL 120V 8A DPAK

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,779

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

NJVMJD128T4G from onsemi is a PNP complementary Darlington power transistor in DPAK (TO-252) package, rated for 120 V_CEO, 8 A continuous collector current, and 20 W power dissipation at T_C = 25°C. It delivers high DC current gain (h_FE = 2500 typ. @ I_C = 4 A), low saturation voltage (V_CE(sat) ≤ 2 V @ I_C/I_B = 250), and is designed for general-purpose amplification and low-speed switching in industrial power control circuits.

For engineers reviewing the NJVMJD128T4G datasheet, pinout, applications, or equivalent options, key selection considerations include its monolithic Darlington structure with built-in base-emitter shunt resistors, AEC-Q101 qualification for automotive-grade reliability, thermal resistance R_JC = 6.25°C/W, and Pb-free DPAK surface-mount compatibility.

Technical Context

This device implements a monolithic PNP Darlington pair with integrated base-emitter shunt resistors to ensure stable turn-off and reduce external component count. Its architecture supports high-current linear amplification and robust switching up to 16 A peak, with guaranteed V_CEO(sus) = 120 V under I_C = 30 mA and I_B = 0 conditions.

Thermal performance is defined by dual derating curves: 0.16 W/°C above 25°C at case mounting (T_C) and 0.014 W/°C at ambient (T_A). Safe operating area (SOA) is limited by second breakdown and thermal constraints, with pulse operation validated up to 100 µs at 150°C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	120 V - Maximum collector-emitter sustaining voltage before breakdown under specified test conditions; defines safe voltage headroom in relay drivers and motor controls.
I_C (continuous)	8 A - Continuous collector current rating at T_C = 25°C; determines maximum steady-state load-handling capability in power stage designs.
P_D (T_C)	20 W - Total power dissipation at case temperature 25°C; sets heatsink sizing baseline when mounted on minimum recommended copper pad.
h_FE (typ.)	2500 @ I_C = 4 A - High DC current gain enables low-base-drive current requirements, reducing driver-stage complexity and power loss.
R_JC	6.25 °C/W - Junction-to-case thermal resistance; directly impacts thermal design margin when using heatsink-integrated PCB mounting.
V_CE(sat)	≤2 V @ I_C/I_B = 250 - Low saturation voltage minimizes conduction losses in switching applications such as DC-DC converter output stages.
T_J range	−65°C to +150°C - Extended junction temperature range supports operation in harsh environments including automotive under-hood and industrial motor drives.

Pinout & Package

DPAK-3 (Case 369C, 6.10 × 6.54 × 2.28 mm) surface-mount package with exposed drain pad (pin 4) electrically connected to collector; RoHS-compliant, UL 94 V-0 rated epoxy encapsulation.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input terminal; requires current-limited drive due to Darlington configuration; internal shunt resistor ensures reliable turn-off without external pull-down.
2	Collector	Main high-current output node; electrically tied to pin 4 (exposed pad); must be thermally and electrically connected to heatsink plane on PCB.
3	Emitter	Power return path; common reference for load connection; polarity defines PNP operation (current sinks into emitter).
4	Collector (exposed pad)	Integral thermal and electrical extension of collector; mandatory soldering to large copper area for thermal management and current capacity.

Key Features

Feature	Design Value
Monolithic Darlington with built-in base-emitter shunt resistors	Eliminates need for external turn-off resistors, simplifying PCB layout and improving reliability in high-noise industrial environments.
AEC-Q101 qualified and PPAP capable	Validated for automotive applications including body control modules and HVAC actuators where extended temperature and long-term reliability are required.
High ESD immunity (HBM > 8 kV, MM > 400 V)	Reduces risk of handling damage during assembly and improves field robustness in electrostatic-prone manufacturing or service settings.
UL 94 V-0 epoxy encapsulation	Meets flammability safety standards for enclosed power electronics in industrial equipment and building automation systems.
Low V_BE(sat) (≤4.5 V @ I_C/I_B = 100)	Enables direct interface with standard 5 V logic or microcontroller GPIOs without level-shifting, lowering BOM cost in embedded control designs.

Applications

Industrial Motor Control	Automotive Body Electronics
Use Scenario: Driving 12–24 V DC brushed motors in conveyor systems and valve actuators requiring <8 A peak current and robust overvoltage protection. IC Role / Device Role / Timing Role: PNP Darlington switch providing high-current sinking capability with built-in base termination for noise-immune gate drive. Use Value: Eliminates external base resistors and reduces thermal stress via low R_JC, enabling compact heatsink-less designs up to 5 W continuous dissipation.	Use Scenario: Controlling power windows, seat adjusters, and mirror actuators in passenger vehicles meeting AEC-Q101 reliability requirements. IC Role / Device Role / Timing Role: High-gain PNP output stage interfacing MCU PWM signals to inductive loads while surviving load-dump transients. Use Value: 120 V V_CEO rating withstands ISO 7637-2 Pulse 5a (load dump) up to 120 V, avoiding external clamping components.
AC/DC Power Supply Protection	Programmable Logic Controller Outputs
Use Scenario: Overcurrent and short-circuit protection circuitry in offline SMPS auxiliary supplies and standby power rails. IC Role / Device Role / Timing Role: Current-sensing Darlington switch used in foldback current limiting loops with fast thermal response. Use Value: 150°C max junction temperature and SOA curve support sustained fault conditions without latch-up or secondary breakdown.	Use Scenario: Isolated digital output module driving solenoids, relays, and indicator lamps in factory automation PLC backplanes. IC Role / Device Role / Timing Role: High-voltage, high-current discrete output buffer with integrated base termination for TTL/CMOS-compatible input. Use Value: 2500 h_FE allows single-stage drive from 3.3 V or 5 V logic, eliminating need for pre-driver transistors and saving board space.

Industrial Motor Control

Automotive Body Electronics

Use Scenario: Driving 12–24 V DC brushed motors in conveyor systems and valve actuators requiring <8 A peak current and robust overvoltage protection.

IC Role / Device Role / Timing Role: PNP Darlington switch providing high-current sinking capability with built-in base termination for noise-immune gate drive.

Use Value: Eliminates external base resistors and reduces thermal stress via low R_JC, enabling compact heatsink-less designs up to 5 W continuous dissipation.

Use Scenario: Controlling power windows, seat adjusters, and mirror actuators in passenger vehicles meeting AEC-Q101 reliability requirements.

IC Role / Device Role / Timing Role: High-gain PNP output stage interfacing MCU PWM signals to inductive loads while surviving load-dump transients.

Use Value: 120 V V_CEO rating withstands ISO 7637-2 Pulse 5a (load dump) up to 120 V, avoiding external clamping components.

AC/DC Power Supply Protection

Programmable Logic Controller Outputs

Use Scenario: Overcurrent and short-circuit protection circuitry in offline SMPS auxiliary supplies and standby power rails.

IC Role / Device Role / Timing Role: Current-sensing Darlington switch used in foldback current limiting loops with fast thermal response.

Use Value: 150°C max junction temperature and SOA curve support sustained fault conditions without latch-up or secondary breakdown.

Use Scenario: Isolated digital output module driving solenoids, relays, and indicator lamps in factory automation PLC backplanes.

IC Role / Device Role / Timing Role: High-voltage, high-current discrete output buffer with integrated base termination for TTL/CMOS-compatible input.

Use Value: 2500 h_FE allows single-stage drive from 3.3 V or 5 V logic, eliminating need for pre-driver transistors and saving board space.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP Darlington power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD127T4G	Complementary NPN Darlington with identical package, ratings (120 V, 8 A), and thermal specs; h_FE = 2500 typ. but opposite polarity.	Used in push-pull or complementary output stages; not interchangeable in single-ended PNP-only circuits.	Select MJD127T4G only when designing symmetrical amplifier outputs or H-bridge topologies requiring matched NPN/PNP pairs.
BDX53C	Through-hole TO-126 PNP Darlington; same V_CEO (100 V), lower I_C (8 A), higher V_CE(sat) (up to 3 V), no AEC-Q101 qualification.	Suitable for legacy through-hole designs or prototyping; lacks surface-mount scalability and automotive qualification.	Choose BDX53C only for hand-soldered prototypes or cost-sensitive non-automotive applications where DPAK footprint is not required.

Compared with MJD127T4G and BDX53C, NJVMJD128T4G uniquely combines AEC-Q101 compliance, DPAK surface-mount efficiency, and monolithic shunt resistors-making it optimal for volume automotive and industrial PCB assemblies where reliability, thermal density, and assembly yield are critical.

Availability

NJVMJD128T4G is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, AC/DC power supply protection, and programmable logic controller outputs requiring stable component supply across production lifecycles.

Supply support for NJVMJD128T4G 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 connectivity solutions for automotive, industrial, cloud, and consumer markets.

NJVMJD128T4G belongs to onsemi's high-reliability discrete power transistor family, engineered for ruggedized switching and amplification in demanding environments where thermal stability, ESD robustness, and automotive qualification are essential.

FAQ

What is the maximum continuous collector current rating for NJVMJD128T4G?

The NJVMJD128T4G is rated for 8 A continuous collector current at case temperature T_C = 25°C. Derating applies above this temperature at 0.16 W/°C, and actual usable current depends on PCB copper area, heatsinking, and ambient conditions. The device supports up to 16 A peak current for short durations under defined pulse conditions.

Is NJVMJD128T4G pin-compatible with other DPAK PNP transistors like MJD122?

No, NJVMJD128T4G is not pin-compatible with MJD122. While both use DPAK packages, MJD122 has different pin assignments (base-collector-emitter vs. NJVMJD128T4G's base-collector-emitter-collector) and significantly lower voltage rating (60 V vs. 120 V). Always verify pinout and SOA curves before substitution.

Does NJVMJD128T4G require an external base resistor for turn-off?

No, NJVMJD128T4G integrates monolithic base-emitter shunt resistors, eliminating the need for external pull-down resistors to ensure reliable turn-off. This feature reduces component count and improves noise immunity in high-EMI industrial environments where the NJVMJD128T4G is commonly deployed.

What is the thermal resistance junction-to-case (R_JC) for NJVMJD128T4G?

The thermal resistance junction-to-case (R_JC) for NJVMJD128T4G is 6.25°C/W, measured under standard surface-mount conditions on the minimum recommended copper pad. This value is critical for calculating junction temperature rise and verifying safe operation within the −65°C to +150°C range specified for the NJVMJD128T4G.

Is NJVMJD128T4G suitable for automotive applications?

Yes, NJVMJD128T4G is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications including body electronics, HVAC actuators, and lighting control modules. Its 120 V V_CEO, 150°C T_J(max), and high ESD ratings meet stringent automotive environmental and reliability requirements.

NJVMJD128T4G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP - Darlington

Current - Collector (Ic) (Max):: 8 A

Voltage - Collector Emitter Breakdown (Max):: 120 V

Vce Saturation (Max) @ Ib, Ic:: 4V @ 80mA, 8A

Current - Collector Cutoff (Max):: 5mA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 1000 @ 4A, 4V

Power - Max:: 1.75 W

Frequency - Transition:: -

Operating Temperature:: -65°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

NJVMJD128T4G FAQ

1.How can I place an order for NJVMJD128T4G through Aetrix?

Please submit a Request for Quotation (RFQ) for NJVMJD128T4G 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 NJVMJD128T4G reliable?

The price and inventory of NJVMJD128T4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NJVMJD128T4G is usually 5 days.

3.What payment methods are accepted for NJVMJD128T4G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NJVMJD128T4G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NJVMJD128T4G?

NJVMJD128T4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NJVMJD128T4G 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 NJVMJD128T4G?

For technical support, including NJVMJD128T4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NJVMJD128T4G requirements.

6.How does Aetrix verify that NJVMJD128T4G is sourced from the original manufacturer or authorized distributors?

All NJVMJD128T4G 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 NJVMJD128T4G meets industry standards.

7.What is the process for return or replacement of NJVMJD128T4G?

All NJVMJD128T4G units undergo pre-shipment inspection (PSI). If there is an issue with NJVMJD128T4G, 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 NJVMJD128T4G part is unused and in its original packaging.

Return procedure for NJVMJD128T4G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…