STMicroelectronics VNP14N04

Overview

VNP14N04 from STMicroelectronics is a fully autoprotected N-channel power MOSFET in TO-220 package, integrating linear current limiting (14 A), overvoltage clamp (42 V), and thermal shutdown (150 °C). It replaces standard MOSFETs in DC–50 kHz inductive switching applications such as motor drivers and solenoid controls.

For engineers reviewing the VNP14N04 datasheet, VNP14N04 pinout, VNP14N04 application, or VNP14N04 equivalent, key selection criteria include its integrated fault feedback via input pin, 0.07 Ω R_DS(on) at 10 V gate drive, rugged unclamped inductive switching capability, and direct gate access for analog driving.

Technical Context

The VNP14N04 implements a monolithic vertical intelligent power M0 process with on-chip protection logic that actively monitors drain current, junction temperature, and drain-source voltage. Its linear current limiter operates independently of input voltage, clamping I_D to 14 A at V_IN = 10 V while forcing operation in the linear region during overload.

Fault detection is achieved by disconnecting the input pin from the internal gate and pulling it to ground through a 100 Ω resistor during overtemperature or short-circuit events. The integrated clamp sustains 42 V with 0.65 J single-pulse avalanche energy, enabling robust operation with inductive loads without external snubbers.

Key Specifications

Pinout & Package

Package: TO-220 (3-pin, straight lead, insulated tab). Case temperature measured at mounting surface; tab is electrically connected to source.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar protected power switch applications.

Compared with STSPIN220, VNP14N04 delivers 7.8× higher current capability and integrated overvoltage clamping essential for inductive loads; versus IPS1021H, it trades 0.025 Ω lower R_DS(on) and 18 V higher clamp for legacy design compatibility and cost stability.

Availability

VNP14N04 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, and HVAC valve control systems requiring stable component supply across extended product lifecycles.

Supply support for VNP14N04 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 intelligent power, microcontrollers, and analog solutions for industrial, automotive, and consumer markets.

The VNP14N04 belongs to ST's OMNIFET family of autoprotected power switches, designed specifically for robust, maintenance-free replacement of mechanical relays and unprotected MOSFETs in harsh DC–50 kHz switching environments.

FAQ

What is the maximum continuous drain current for VNP14N04?

The VNP14N04 does not specify a continuous drain current rating due to its integrated linear current limiter. Instead, it guarantees a 14 A current limit when V_IN = 10 V and V_DS = 13 V. Sustained operation at this limit increases junction temperature rapidly; thermal derating must be applied based on heatsink performance and ambient conditions.

Can VNP14N04 be used in high-frequency PWM applications?

No - the VNP14N04 is characterized and qualified for DC to 50 kHz operation only. Its switching times (e.g., 250 ns td(off) with 10 Ω gate drive) and thermal protection architecture are optimized for low-frequency inductive loads, not high-frequency SMPS. Using above 50 kHz risks exceeding safe operating area limits during transitions.

How is fault condition detected on the input pin?

During overtemperature or short-circuit faults, the internal protection circuit disconnects the input pin from the gate and connects it to ground through an internal 100 Ω resistor. This pulls the input pin voltage to near 0 V, which can be monitored by a microcontroller GPIO or comparator to trigger system-level fault response.

Is external gate resistor required for safe operation?

Yes - an external gate resistor (R_gen) is required to control dV/dt and di/dt during switching. The datasheet specifies test conditions with R_gen = 10 Ω or 1000 Ω. Without it, excessive ringing or shoot-through may occur, especially with inductive loads. Typical values range from 5 Ω to 47 Ω depending on switching speed and EMI requirements.