Vishay Siliconix SQM40022EM_GE3

Overview

SQM40022EM_GE3 from Vishay Siliconix is an automotive-grade N-channel TrenchFET® power MOSFET optimized for high-current 40 V DC-DC conversion, motor control, and battery protection circuits. It delivers R_DS(on) = 1.63 mΩ at V_GS = 10 V, supports 150 A continuous drain current at T_C = 25 °C, and operates up to +175 °C junction temperature in a TO-263-7L (D2PAK) package with drain-connected tab.

For engineers reviewing the SQM40022EM_GE3 datasheet, SQM40022EM_GE3 pinout, SQM40022EM_GE3 application, or SQM40022EM_GE3 equivalent, key selection criteria include its AEC-Q101 qualification, low R_DS(on) at elevated temperature, 100 % R_g and UIS tested reliability, and thermal performance validated on 1"×1" FR4 PCB.

Technical Context

This MOSFET employs trench-gate silicon technology to achieve ultra-low on-resistance while maintaining robust avalanche capability (E_AS = 180 mJ). Its gate charge profile (Q_g = 106–160 nC, Q_gd = 21 nC) supports efficient high-frequency switching in synchronous buck converters and H-bridge drivers.

The device integrates a low-V_SD body diode (0.83–1.5 V at I_F = 60 A) with fast reverse recovery (t_rr = 88–180 ns, Q_rr = 186–380 nC), enabling reduced switching losses in freewheeling paths without external Schottky supplementation.

Key Specifications

Pinout & Package

Package: TO-263-7L (D2PAK-7), surface-mount with exposed drain tab for thermal and electrical connection. Dimensions per Vishay Doc #63782: 10.67 × 10.16 × 4.83 mm (L × W × H), 7-terminal layout.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 40 V power MOSFET applications.

Compared with IRF1407PBF and STL220N4F7AG, SQM40022EM_GE3 uniquely combines AEC-Q101 qualification, dual Kelvin source sensing, and 1.63 mΩ R_DS(on) in TO-263-7L-making it optimal for automotive safety-critical current-controlled switching where thermal margin and measurement fidelity are essential.

Availability

SQM40022EM_GE3 is available at Aetrix Electronics and suitable for electric power steering, 48 V mild hybrid DC-DC conversion, and automotive battery disconnect units requiring stable component supply and long-term production continuity.

Supply support for SQM40022EM_GE3 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

Vishay Siliconix is a global leader in discrete semiconductors, specializing in high-performance MOSFETs, diodes, and optoelectronics with emphasis on automotive, industrial, and computing applications.

The SQM40022EM_GE3 belongs to Vishay's TrenchFET® Gen IV automotive power MOSFET family, engineered specifically for high-current, high-temperature switching in safety-critical vehicle subsystems.

FAQ

What is the maximum continuous drain current rating for SQM40022EM_GE3 at 125 °C case temperature?

The SQM40022EM_GE3 supports 125 A continuous drain current at T_C = 125 °C, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limitations of the TO-263-7L package and must be verified against actual board-level thermal resistance (R_thJA = 40 °C/W on 1"×1" FR4) in the target application layout. SQM40022EM_GE3 maintains safe operation within this limit when mounted with adequate copper area and airflow.

Does SQM40022EM_GE3 include Kelvin source (SS) terminals, and how are they used in circuit design?

Yes, SQM40022EM_GE3 features two dedicated Source Sense (SS) terminals that provide a low-impedance Kelvin connection to the internal source node-bypassing bond wire resistance. In circuit design, these pins connect directly to the current-sense amplifier inputs or controller feedback nodes to eliminate voltage drop errors caused by high di/dt through bond wires. SQM40022EM_GE3 thus enables accurate real-time current monitoring without external shunts in motor control and overcurrent protection applications.

Is SQM40022EM_GE3 qualified to AEC-Q101, and what does that mean for automotive deployment?

Yes, SQM40022EM_GE3 is fully AEC-Q101 qualified, meaning it has passed stress tests including HTGB, HTRB, AC/DC life test, ESD, and unclamped inductive switching under automotive temperature and humidity conditions. This qualification confirms suitability for automotive powertrain, chassis, and body electronics where failure could impact safety or emissions compliance. SQM40022EM_GE3 is rated for operation from –55 °C to +175 °C junction temperature, supporting under-hood and transmission-mounted deployments.

What is the typical total gate charge (Q_g) of SQM40022EM_GE3, and how does it affect gate driver selection?

The typical total gate charge (Q_g) of SQM40022EM_GE3 is 106 nC at V_GS = 10 V, V_DS = 20 V, and I_D = 100 A. This value determines the required gate driver peak current (I_PK ≈ Q_g × f_SW) and influences switching speed and driver power loss. For 300 kHz operation, SQM40022EM_GE3 demands ≥32 A peak gate current; drivers such as the UCC27531 or IRS2007 are commonly selected to meet this requirement while maintaining clean edge rates and low shoot-through risk.

How does the body diode performance of SQM40022EM_GE3 compare to standard silicon diodes in freewheeling applications?

SQM40022EM_GE3 features a fast, low-V_SD body diode with forward voltage of 0.83–1.5 V at I_F = 60 A and reverse recovery time of 88–180 ns. Compared to standard silicon diodes, this offers significantly faster recovery and lower conduction loss-reducing switching node ringing and improving efficiency in synchronous rectification and H-bridge freewheeling. SQM40022EM_GE3's Q_rr (186–380 nC) is tightly controlled and characterized across temperature, enabling predictable loss modeling in high-frequency converters.