Vishay Siliconix SQA401EEJ-T1_GE3

Overview

SQA401EEJ-T1_GE3 from Vishay Siliconix is an automotive-grade P-channel enhancement-mode MOSFET rated for -20 V drain-source voltage, 0.113 Ω R_DS(on) at V_GS = -4.5 V, and -2.68 A continuous drain current at T_C = 25 °C. It serves as a high-side load switch in 12 V automotive power distribution systems, supporting AEC-Q101 qualification and 175 °C junction operation.

For engineers reviewing the SQA401EEJ-T1_GE3 datasheet, SQA401EEJ-T1_GE3 pinout, SQA401EEJ-T1_GE3 application, or SQA401EEJ-T1_GE3 equivalent, key selection criteria include its PowerPAK SC-70-6L package thermal performance (R_thJA = 90 °C/W), -1.0 V typical gate threshold voltage, 100% UIS testing, and suitability for space-constrained body control modules requiring robust overvoltage and avalanche energy handling (E_AS = 2.45 mJ).

Technical Context

This device uses Vishay's TrenchFET® process to achieve low on-resistance in a thermally efficient PowerPAK SC-70-6L package with four paralleled drain terminals. Its gate drive is optimized for logic-level compatibility down to -2.5 V, enabling direct interface with microcontroller GPIOs in battery management and lighting control circuits.

The MOSFET features integrated source-drain diode with -0.8 V typical forward voltage at -2 A, and exhibits stable R_DS(on) up to 175 °C junction temperature (0.184 Ω max at T_J = 175 °C, V_GS = -4.5 V, I_D = -2 A), supporting high-temperature under-hood applications without derating penalties.

Key Specifications

Pinout & Package

Package: PowerPAK® SC-70-6L, surface-mount, 2.05 mm × 2.05 mm footprint with exposed drain pad for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel MOSFET applications.

Compared with SQA401EEJ-T1_GE3, SQ2308CES_T1_GE3 offers higher voltage margin and lower R_DS(on) but requires layout revision due to larger package and higher gate drive demand; AO3401 provides cost-effective prototyping but cannot replace SQA401EEJ-T1_GE3 in production automotive designs due to missing AEC-Q101 validation and thermal limits.

Availability

SQA401EEJ-T1_GE3 is available at Aetrix Electronics and suitable for automotive body electronics, LED lighting control, and engine management systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for SQA401EEJ-T1_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 power MOSFETs, diodes, and optoelectronics with emphasis on automotive, industrial, and computing applications.

The SQA401EEJ-T1_GE3 belongs to Vishay's AEC-Q101-qualified TrenchFET® automotive MOSFET family, engineered specifically for high-reliability, high-temperature switching in space-constrained vehicle subsystems.

FAQ

What is the maximum junction temperature rating for the SQA401EEJ-T1_GE3?

The SQA401EEJ-T1_GE3 has a specified operating junction temperature range of -55 °C to +175 °C. This rating is validated per AEC-Q101 stress tests and confirmed in the absolute maximum ratings table. The device maintains functional performance and reliability up to 175 °C, making it suitable for under-hood automotive applications where ambient temperatures exceed 125 °C. Derating curves for R_DS(on) and power dissipation are provided in the datasheet for design-in at elevated temperatures.

Does the SQA401EEJ-T1_GE3 support logic-level gate drive?

Yes, the SQA401EEJ-T1_GE3 supports logic-level gate drive with a typical gate threshold voltage (V_GS(th)) of -1.0 V and guaranteed operation down to -2.5 V. At V_GS = -2.5 V, it delivers 0.200 Ω R_DS(on) at -2 A, enabling direct interface with 3.3 V microcontrollers without external level shifters. The -0.6 V to -1.5 V V_GS(th) range ensures consistent turn-on behavior across production lots and temperature extremes.

What is the avalanche energy rating of the SQA401EEJ-T1_GE3 and how is it tested?

The SQA401EEJ-T1_GE3 has a single-pulse avalanche energy rating (E_AS) of 2.45 mJ, measured under standardized conditions: L = 0.1 mH, I_AS = -7 A, and V_DD = -20 V. This parameter is verified through 100% unclamped inductive switching (UIS) testing per JEDEC JESD22-A110, ensuring each unit can safely absorb inductive energy during load switching without failure. The rating applies across the full -55 °C to +175 °C junction temperature range.

How does the PowerPAK SC-70-6L package improve thermal performance versus standard SC-70?

The PowerPAK SC-70-6L package used by the SQA401EEJ-T1_GE3 integrates an exposed drain pad that serves as the primary thermal path to the PCB. Compared to standard SC-70 packages, this construction reduces junction-to-ambient thermal resistance (R_thJA) to 90 °C/W on a 1" FR4 board - approximately 30% lower than conventional equivalents. The four paralleled drain pins (pins 1, 2, 5, 6) and bottom-surface copper area maximize heat transfer into the PCB ground plane, enabling higher continuous current capability without heatsinks.

Is the SQA401EEJ-T1_GE3 suitable for reverse polarity protection circuits?

Yes, the SQA401EEJ-T1_GE3 is well-suited for reverse polarity protection due to its P-channel configuration, -20 V V_DS rating, and ability to block reverse voltage while conducting forward current with low loss. When placed in the high-side position with source tied to input and drain to load, it prevents damage from accidental battery reversal. Its -0.8 V typical source-drain diode forward voltage (V_SD) at -2 A also supports controlled current flow during fault recovery, and AEC-Q101 qualification ensures robustness in automotive environments where such faults may occur.