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 > Integrated Circuits (ICs) > Power Management (PMIC) > Power Distribution Switches, Load Drivers

STMicroelectronics VNB49N04-E

Name: VNB49N04-E
Brand: STMicroelectronics
SKU: VNB49N04-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: VNB49N04-E

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: VNB49N04-E.pdf

Description:: IC PWR DRIVER N-CHAN 1:1 D2PAK

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,901

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

Product details

Overview

VNB49N04-E from STMicroelectronics is a fully autoprotected monolithic Power MOSFET in VIPower M0 technology, designed as a rugged replacement for standard N-channel MOSFETs in DC–50 kHz switching applications. It features integrated linear current limiting (49 A), overvoltage clamp (42 V), thermal shutdown (150 °C), and diagnostic feedback via the input pin. Used in motor control and industrial load switching where fault resilience is critical.

For engineers reviewing the VNB49N04-E datasheet, VNB49N04-E pinout, VNB49N04-E application, or VNB49N04-E equivalent, this device's real-time fault reporting, gate-accessible analog driving capability, and built-in avalanche energy rating (4 J) are key selection criteria for high-reliability power stage design.

Technical Context

The VNB49N04-E integrates a power MOSFET with on-die protection circuitry including voltage-clamp-triggered avalanche handling, temperature-sensed thermal shutdown independent of input voltage, and linear-mode current limiting that activates at 49 A under VIN=10 V. Its input pin serves dual roles: gate control during normal operation and fault-status sink (50 mA) during overtemperature events.

Switching behavior is characterized by 200–600 ns turn-on delay (R_gen=10 Ω), 1.3–3.8 µs delay with high-impedance drive (R_gen=1 kΩ), and 25 A/µs (di/dt)_on. The internal diode exhibits 1.8 V forward drop at 25 A and 250 ns reverse recovery time, enabling inductive load commutation without external freewheeling diodes in many cases.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS Rating	Internally clamped at 42 V - enables safe switching of 24 V industrial loads with margin against inductive kickback.
R_DS(on)	0.04 Ω @ VIN=10 V, ID=25 A - delivers low conduction loss (<1 W at 5 A) and supports compact heatsinking.
I_LIM	49 A @ VIN=10 V - provides predictable current limiting during short-circuit events without external sensing.
T_jsh / T_jrs	150 °C shutdown / 135 °C reset - ensures autonomous thermal recovery with hysteresis to prevent oscillation.
E_AS	4 J single-pulse avalanche energy - sustains unclamped inductive switching stress without failure.
Q_i	100 nC total input charge - determines gate driver power requirement and influences switching speed vs. loss trade-off.
V_IN(th)	0.8–3 V input threshold - compatible with TTL and 5 V logic-level microcontrollers without level-shifting.

Pinout & Package

Package: TO-263 (D2PAK), surface-mount, 3-pin configuration with exposed drain pad for thermal dissipation. R_thj-case = 1 °C/W enables high-power operation with minimal heatsink area.

Pin/Terminal	Circuit Role	Design Meaning
1 (INPUT)	Gate control & fault feedback node	Drives internal MOSFET gate during normal operation; sinks 50 mA to ground during thermal fault for status detection.
2 (DRAIN)	Main power output terminal	Connected to load side; electrically tied to exposed metal tab - must be isolated from heatsink unless referenced to system ground.
3 (SOURCE)	Power return and reference node	Serves as common return path for load current and internal protection circuitry; defines local ground reference for input threshold.

Key Features

Feature	Design Value
Integrated overvoltage clamp	42 V clamping with rugged avalanche capability - eliminates need for external TVS in 24 V systems.
Linear current limitation	49 A hard limit independent of input voltage - prevents runaway current during short circuits without external shunt or controller.
Direct gate access	Analog-compatible input pin allows PWM or variable-voltage drive - supports soft-start and current ramp control.
Diagnostic feedback	Input pin transitions to ~0 V (100 Ω sink) during thermal fault - enables simple microcontroller GPIO monitoring without extra circuitry.
ESD protection	2000 V HBM rating - withstands handling and board assembly without additional ESD safeguards.

Applications

Industrial Motor Control

Automotive Body Control Module

Use Scenario: Driving 24 V DC brushed motors in conveyor systems with frequent stall conditions.

IC Role / Device Role / Timing Role: High-side load switch with real-time current and temperature fault reporting.

Use Value: Eliminates need for separate current sense amplifier and thermal sensor; reduces BOM count by 3 components.

Use Scenario: Controlling headlight relays and window lift actuators in 12 V vehicle platforms.

IC Role / Device Role / Timing Role: Protected power switch with diagnostic feedback for CAN-based fault logging.

Use Value: Enables OEM-level diagnostics via existing microcontroller GPIO, avoiding dedicated fault-reporting ICs.

Programmable Logic Controller Output

UPS Inverter Stage Protection

Use Scenario: Solid-state output module for PLCs switching solenoids and contactors in factory automation.

IC Role / Device Role / Timing Role: Fault-tolerant power driver with self-resetting thermal protection.

Use Value: Supports hot-swappable I/O modules with automatic recovery after overload - no manual reset required.

Use Scenario: DC bus switching in offline UPS inverters subject to intermittent short-circuit faults.

IC Role / Device Role / Timing Role: Avalanche-rated main switch with integrated clamp and current limiting.

Use Value: Withstands repeated unclamped inductive switching events (E_AS = 4 J), extending field lifetime beyond discrete MOSFET alternatives.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP49NF40	Standard N-channel MOSFET, no integrated protection, R_DS(on) = 0.04 Ω, V_DS = 40 V, no current limit or thermal shutdown.	Requires external current sense, thermal sensor, and clamp circuit - increases design complexity and PCB area.	Select when full control over protection thresholds is needed and system-level fault management is already implemented.
IPS1021H	Smart high-side switch, 60 V, 2.5 A continuous, integrated diagnostics, but lower current rating and no linear current limiting.	Targeted at low-power digital I/O protection; unsuitable for 49 A motor or relay loads.	Select only for sub-5 A loads requiring SPI-configurable diagnostics - not a functional substitute for VNB49N04-E's power class.

Compared with STP49NF40 and IPS1021H, the VNB49N04-E uniquely combines 49 A current capability, 42 V clamp, and autonomous thermal recovery in a single D2PAK package - making it the only option among the three suitable for high-current industrial switching with zero external protection components.

Availability

VNB49N04-E is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, programmable logic controller outputs, and UPS inverter stages requiring stable component supply across extended production lifecycles.

Supply support for VNB49N04-E 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, microcontrollers, and automotive-grade ICs with vertical manufacturing capabilities.

The VNB49N04-E belongs to ST's OMNIFET family of VIPower M0-technology smart power switches, engineered specifically for robust, self-protected DC–50 kHz power switching in harsh industrial and automotive environments.

FAQ

What is the maximum continuous drain current for VNB49N04-E?

The device delivers 49 A continuous drain current when VIN = 10 V and V_DS = 13 V, as specified in the electrical characteristics table. This rating assumes proper heatsinking to maintain case temperature ≤ 25 °C and junction temperature below thermal shutdown threshold. Derating applies above T_c = 25 °C per the R_thj-case = 1 °C/W thermal resistance.

How does the diagnostic feedback mechanism work?

During overtemperature fault, 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, allowing a microcontroller GPIO to detect the fault state without additional components. Normal operation resumes automatically once junction temperature falls below 135 °C.

Can VNB49N04-E be driven directly by a 3.3 V microcontroller?

No - the input threshold voltage ranges from 0.8 V to 3 V, but reliable full enhancement requires VIN ≥ 5 V to achieve R_DS(on) = 0.05 Ω. At 3.3 V, R_DS(on) rises significantly (not specified in datasheet), increasing conduction loss and risk of thermal runaway under load. A level-shifter or 5 V buffer is recommended.

Is an external freewheeling diode required when switching inductive loads?

Not always - the integrated source-drain diode has V_SD = 1.8 V at 25 A and t_rr = 250 ns, sufficient for many 24 V solenoid and relay applications. However, for high-frequency PWM (>10 kHz) or high-energy inductors, an external Schottky diode may be needed to reduce switching losses and diode heating.

VNB49N04-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Series:: OMNIFET™, VIPower™

Packaging:: Tube

Product Status:: Obsolete

Switch Type:: General Purpose

Number of Outputs:: 1

Ratio - Input:Output:: 1:1

Output Configuration:: Low Side

Output Type:: N-Channel

Interface:: On/Off

Voltage - Load:: 33V (Max)

Voltage - Supply (Vcc/Vdd):: Not Required

Current - Output (Max):: 28A

Rds On (Typ):: 40mOhm (Max)

Input Type:: Non-Inverting

Features:: Status Flag

Fault Protection:: Current Limiting (Fixed), Over Temperature, Over Voltage

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

VNB49N04-E FAQ

1.How can I place an order for VNB49N04-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VNB49N04-E 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 VNB49N04-E reliable?

The price and inventory of VNB49N04-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VNB49N04-E is usually 5 days.

3.What payment methods are accepted for VNB49N04-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VNB49N04-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VNB49N04-E?

VNB49N04-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VNB49N04-E 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 VNB49N04-E?

For technical support, including VNB49N04-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VNB49N04-E requirements.

6.How does Aetrix verify that VNB49N04-E is sourced from the original manufacturer or authorized distributors?

All VNB49N04-E 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 VNB49N04-E meets industry standards.

7.What is the process for return or replacement of VNB49N04-E?

All VNB49N04-E units undergo pre-shipment inspection (PSI). If there is an issue with VNB49N04-E, 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 VNB49N04-E part is unused and in its original packaging.

Return procedure for VNB49N04-E:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 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…

2026-09-01 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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…