STMicroelectronics VNB14N04

Overview

VNB14N04 from STMicroelectronics is a fully autoprotected monolithic Power MOSFET in the OMNIFET family, fabricated using VIPower M0 technology. It functions as a smart high-side switch with integrated linear current limiting (14 A), thermal shutdown (150 °C), and 42 V overvoltage clamp, enabling robust DC–50 kHz switching in automotive body control modules and industrial load drivers.

For engineers reviewing the VNB14N04 datasheet, VNB14N04 pinout, VNB14N04 application, or VNB14N04 equivalent, key selection criteria include its diagnostic feedback via input pin, direct gate access for analog driving, low 0.07 Ω R_DS(on) at 10 V, and compatibility with TTL logic-level drive.

Technical Context

The VNB14N04 integrates a power MOSFET stage with on-chip protection circuitry including a voltage-clamped drain-source path (42 V), linear current limiter (14 A typ.), and junction temperature sensor triggering shutdown at ≥150 °C and restart at ≤135 °C. Fault status is signaled by pulling the input pin to ground through a 100 Ω internal resistor.

It operates as a high-side switch with direct gate control capability, drawing only 250–500 µA from the input pin under normal conditions. Its rugged avalanche energy rating (0.65 J) and ESD immunity (2000 V HBM) support reliable operation in inductive-load environments such as solenoid and motor control.

Key Specifications

Pinout & Package

Package: PowerSO-10 (TO-263 variant with 10-pin exposed tab configuration). Thermal resistance junction-to-case is 2.5 °C/W, supporting high-power dissipation with minimal thermal derating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side smart switch applications.

Compared with STVN7012AJ and BTS716G, the VNB14N04 offers unique analog gate access and simple fault signaling via input pin voltage-ideal for cost-sensitive, non-safety-critical designs where minimal external components and direct microcontroller interfacing are priorities.

Availability

VNB14N04 is available at Aetrix Electronics and suitable for automotive body electronics, industrial solenoid control, LED lighting systems, and DC motor starter circuits requiring stable component supply and long-term production continuity.

Supply support for VNB14N04 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, automotive ICs, and embedded processing solutions.

The OMNIFET series-including VNB14N04-is designed for intelligent power distribution in harsh environments, targeting replacement of discrete MOSFET + protection circuits in 12 V/24 V DC systems.

FAQ

What is the maximum operating frequency for VNB14N04?

The VNB14N04 is rated for DC to 50 kHz operation per ST's official specification. Its typical switching times (e.g., 60 ns turn-on delay, 160 ns rise time with 10 Ω gate resistance) support efficient PWM control in lighting and motor applications within this range, though thermal limits may constrain sustained high-frequency use at full current.

Can VNB14N04 be used as a low-side switch?

No - VNB14N04 is configured exclusively as a high-side switch. Its SOURCE pins are internally tied to the substrate and referenced to ground, while the DRAIN (exposed tab) connects to the load. Using it as a low-side switch would violate absolute maximum ratings and disable protection features.

How does the diagnostic feedback signal work during a fault?

During overtemperature or short-circuit events, the internal protection circuit disconnects the INPUT pin from the gate and connects it to ground through a 100 Ω resistor. This pulls the input voltage near 0 V, detectable by a microcontroller ADC or comparator, enabling immediate fault logging or system shutdown.

Is VNB14N04 RoHS-compliant and halogen-free?

Yes - STMicroelectronics specifies VNB14N04 in ECOPACK®-compliant PowerSO-10 packaging, meeting RoHS Directive 2011/65/EU and halogen-free requirements per IEC 61249-2-21. Full compliance documentation is available in ST's ECOPACK® database at www.st.com.