onsemi NJV4030PT3G

Overview

NJV4030PT3G from onsemi is a PNP silicon bipolar power transistor in SOT-223 package, rated for 40 V V_CEO, 3.0 A continuous collector current, and 2.0 W total power dissipation at T_A = 25 °C with 1"² copper pad. It delivers h_FE = 220–400 (IC = 0.5 A), V_CE(sat) ≤ 0.5 V at IC = 3.0 A/IB = 0.3 A, and is AEC-Q101 qualified for automotive load switching applications.

For engineers reviewing the NJV4030PT3G datasheet, pinout, applications, or equivalent options, key selection criteria include its PNP polarity, SOT-223 thermal performance (R_JA = 64 °C/W on 1"² FR-4), low saturation voltage under high-current drive, and automotive-grade qualification status.

Technical Context

This device operates as a medium-power PNP switching transistor with fixed gain structure optimized for linear and saturated-mode operation. Its DC current gain (h_FE) varies from 220 at IC = 0.5 A to 100 at IC = 3.0 A, and it maintains V_CE(sat) ≤ 0.5 V under full-rated 3.0 A load with 0.3 A base drive.

Thermal design relies on its SOT-223 package's exposed collector tab (pins 2 & 4) for direct PCB heat sinking. The device supports operation from −55 °C to +150 °C junction temperature and exhibits 40 pF output capacitance (C_ob) and 160 MHz f_T at IC = 500 mA, enabling use in moderate-speed switching circuits.

Key Specifications

Pinout & Package

SOT-223 (Case 318E, Style 1) package with exposed collector tab (pins 2 and 4 electrically connected) for thermal and electrical grounding. Pin 1 is base, pin 3 is emitter, and pins 2 & 4 are collector terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MJD44H11T4G and ZTX951, the NJV4030PT3G provides optimal balance of 40 V rating, 3.0 A current capability, low saturation voltage, and SOT-223 thermal performance-making it preferred for automotive and industrial 12–24 V switching where reliability and thermal management are critical.

Availability

NJV4030PT3G is available at Aetrix Electronics and suitable for automotive load switching, industrial motor control, and commercial LED driver applications requiring stable component supply, AEC-Q101 compliance, and Pb-free manufacturing.

Supply support for NJV4030PT3G 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 power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.

The NJV4030PT3G belongs to onsemi's Bipolar Power Transistor family, engineered for robust, high-reliability switching in harsh environments-including under-hood automotive and factory floor settings-where thermal stability and transient tolerance are essential.

FAQ

What is the maximum continuous collector current rating for NJV4030PT3G?

The NJV4030PT3G is rated for 3.0 A continuous collector current at case temperature T_C = 25 °C with sufficient heatsinking. Derating applies above 25 °C per Figure 1 in the datasheet, and actual usable current depends on PCB copper area, ambient temperature, and airflow. For reliable operation at full 3.0 A, the SOT-223 exposed collector pad must be soldered to ≥1"² of 2 oz copper on FR-4.

Is NJV4030PT3G suitable for automotive applications?

Yes, the NJV4030PT3G is AEC-Q101 qualified and PPAP capable, with NJV prefix indicating automotive-specific process controls and change management. It operates from −55 °C to +150 °C, supports load-dump transients up to 40 V, and meets ESD robustness requirements (HBM Class 3B). These features make NJV4030PT3G appropriate for engine control modules, body electronics, and chassis subsystems.

What is the pin configuration of NJV4030PT3G in the SOT-223 package?

The NJV4030PT3G uses SOT-223 (Case 318E) with pin 1 = Base, pin 2 = Collector, pin 3 = Emitter, and pin 4 = Collector (electrically tied to pin 2). The exposed metal tab on the underside is also collector-connected and must be soldered to PCB copper for thermal and electrical performance. This dual-collector configuration enhances current handling and thermal dissipation.

How does the DC current gain (h_FE) of NJV4030PT3G vary with operating conditions?

The NJV4030PT3G exhibits h_FE = 220–400 at I_C = 0.5 A, 200–400 at I_C = 1.0 A, and 100–400 at I_C = 3.0 A, all measured at V_CE = 1.0 V. Gain decreases with increasing collector current and rising junction temperature. Designers must verify base drive (I_B ≥ I_C/h_FE(min)) across the full operating range-not just at room temperature-to ensure saturation under worst-case conditions.

What thermal resistance values apply to NJV4030PT3G in standard PCB layouts?

NJV4030PT3G has R_JA = 64 °C/W when mounted on 1"² (645 mm²) of 2 oz copper on FR-4 board (Note 1), and R_JA = 155 °C/W on minimal 7.6 mm² copper (Note 2). R_JC = 11 °C/W defines junction-to-case resistance, critical for estimating die temperature when using external heatsinks. These values directly impact maximum allowable power dissipation and must be used in thermal calculations for each specific layout.