Vishay Siliconix SQD50P03-07-T4_GE3

Overview

SQD50P03-07-T4_GE3 from Vishay Siliconix is an automotive-grade P-channel enhancement-mode MOSFET rated for -30 V drain-source voltage, 50 A continuous drain current at 25 °C, and 0.007 Ω R_DS(on) at V_GS = -10 V. It features trench-based silicon architecture, AEC-Q101 qualification, and a TO-252 (DPAK) package with drain-connected tab, designed for high-current DC load switching in engine control units and battery disconnect circuits.

For engineers reviewing the SQD50P03-07-T4_GE3 datasheet, SQD50P03-07-T4_GE3 pinout, SQD50P03-07-T4_GE3 application, or SQD50P03-07-T4_GE3 equivalent, key selection criteria include its -55 to +175 °C operating junction temperature range, 125 mJ single-pulse avalanche energy rating, 97 nC total gate charge, and verified 100 % R_g and UIS testing per production lot.

Technical Context

This MOSFET employs Vishay's TrenchFET® process to achieve low on-resistance and fast switching with controlled gate charge distribution. Its negative threshold voltage (-1.5 to -2.5 V) enables direct logic-level drive from 3.3 V or 5 V microcontrollers when used in high-side configurations with appropriate level shifting.

The device integrates a robust body diode with -0.85 V forward voltage at -30 A and supports synchronous rectification in bidirectional power paths. Thermal design is enabled by a 1.1 °C/W junction-to-case resistance and drain-tab thermal interface compatible with PCB copper pour or heatsink mounting.

Key Specifications

Pinout & Package

Package: TO-252AA (DPAK), surface-mount, thermally enhanced with exposed drain tab soldered to PCB copper pour. Dimensions: 6.22 mm × 6.73 mm × 2.38 mm (L × W × H); drain tab occupies full rear surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRF4905PBF and STP50P03LLH6, SQD50P03-07-T4_GE3 delivers superior thermal efficiency in SMT automotive designs due to its TO-252 drain-tab construction, AEC-Q101 compliance, and lower R_DS(on), enabling higher power density without derating.

Availability

SQD50P03-07-T4_GE3 is available at Aetrix Electronics and suitable for engine control modules, battery management systems, and electric power steering subsystems requiring stable component supply across extended automotive product lifecycles.

Supply support for SQD50P03-07-T4_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-reliability MOSFETs, diodes, and optoelectronics for automotive, industrial, and computing markets.

The SQD50P03-07-T4_GE3 belongs to Vishay's TrenchFET® Automotive P-Channel family, engineered specifically for high-current, high-temperature switching in safety-critical vehicle subsystems where robustness and long-term parametric stability are mandatory.

FAQ

What is the maximum continuous drain current rating for SQD50P03-07-T4_GE3 at 125 °C case temperature?

The SQD50P03-07-T4_GE3 maintains a continuous drain current rating of -50 A at T_C = 125 °C, as specified in the Absolute Maximum Ratings table. This reflects its ability to sustain full-load operation under elevated thermal conditions common in engine bay environments, provided the PCB thermal design meets the 1" square FR-4 copper requirement for junction-to-ambient heat dissipation.

Is SQD50P03-07-T4_GE3 suitable for synchronous rectification in a bidirectional DC-DC converter?

Yes, SQD50P03-07-T4_GE3 supports synchronous rectification due to its low R_DS(on) and integrated body diode with -0.85 V forward voltage at -30 A. Its 175 °C junction rating and 125 mJ E_AS allow safe operation during reverse current commutation transients, making it viable for 12 V/48 V bidirectional converters in mild-hybrid architectures when paired with appropriate gate timing control.

Does SQD50P03-07-T4_GE3 require a gate resistor for ESD protection in automotive applications?

While SQD50P03-07-T4_GE3 has built-in ESD protection per AEC-Q101, a series gate resistor (typically 10–47 Ω) is recommended to dampen ringing and limit peak gate current during fast edge transitions. This improves electromagnetic compatibility and prevents unintended turn-on from coupled noise in high-noise engine compartments-critical for reliable SQD50P03-07-T4_GE3 operation in real-world automotive harness environments.

How does the R_DS(on) of SQD50P03-07-T4_GE3 change over temperature, and what is its value at 175 °C junction temperature?

Per the datasheet's "On-Resistance vs. Junction Temperature" curve, SQD50P03-07-T4_GE3 exhibits normalized R_DS(on) ≈ 2.0× at T_J = 175 °C versus 25 °C. With a nominal R_DS(on) of 0.007 Ω at 25 °C and -10 V V_GS, its value rises to approximately 0.014 Ω at 175 °C-still well within design margins for most automotive load-switching applications when properly heatsinked.

Can SQD50P03-07-T4_GE3 be used in a high-side switch configuration with a 3.3 V microcontroller GPIO without level shifting?

No-SQD50P03-07-T4_GE3 has a V_GS(th) range of -1.5 V to -2.5 V and requires sufficient negative gate drive to fully enhance. A 3.3 V GPIO cannot generate the necessary V_GS ≤ -10 V for low R_DS(on); a dedicated high-side gate driver or level-shifting circuit (e.g., charge pump or complementary N/P pair) is required to ensure reliable SQD50P03-07-T4_GE3 turn-on and minimize conduction losses in high-side applications.