Taiwan Semiconductor Corporation SR3090PT

Overview

SR3090PT from Taiwan Semiconductor is a 30A, 90V repetitive peak reverse voltage Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring dual-die construction, 300A surge capability, 1.5°C/W junction-to-case thermal resistance, and AEC-Q101 qualification option. It serves as a high-efficiency output rectifier in automotive-grade DC-DC converters and industrial SMPS.

For engineers reviewing the SR3090PT datasheet, SR3090PT pinout, SR3090PT application, or SR3090PT equivalent, key selection criteria include its 90V V_RRM, 0.90V typical forward voltage at 15A/25°C, 500µA max reverse leakage at rated VR and 25°C, 10mA max at 100°C, and compatibility with high-surge, thermally constrained power stages.

Technical Context

The SR3090PT implements a dual-die Schottky structure optimized for low conduction loss and fast switching in unidirectional DC output paths. Its 90V V_RRM rating targets mid-voltage industrial and automotive power rails, while the 1.5°C/W R_θJC enables direct heatsink mounting without thermal interface degradation.

Rated for continuous 30A forward current and 300A non-repetitive surge (8.3ms half-sine), it operates up to 150°C junction temperature and meets UL 94V-0 flammability and JESD201 Class 2 whisker requirements - confirming suitability for under-hood and enclosed power systems.

Key Specifications

Pinout & Package

Package: TO-247AD (TO-3P) - 3-terminal through-hole package with isolated tab, matte tin-plated leads, UL 94V-0 molding compound, and 6.10g mass. Mounting torque ≤1.13 N·m.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with VS-30CPH09-M3 and MUR3090CT, the SR3090PT uniquely combines AEC-Q101 readiness, guard ring protection, and 150°C operation - making it the only choice for thermally aggressive, automotive-qualified 90V Schottky rectification.

Availability

SR3090PT is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS outputs, and medical power adapters requiring stable component supply, long-lifecycle assurance, and AEC-Q101-compliant sourcing.

Supply support for SR3090PT 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and power discrete manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, automotive, and consumer markets since 1979.

The SR30xxPT series was developed specifically for high-current, medium-voltage Schottky rectification in space-constrained, thermally demanding power supplies - emphasizing ruggedness, consistency, and regulatory compliance.

FAQ

What is the maximum junction temperature rating for the SR3090PT?

The SR3090PT has a maximum junction temperature (T_J) rating of 150°C, confirmed in the Absolute Maximum Ratings table. This allows operation in high-ambient environments such as under-hood automotive locations or sealed industrial enclosures. The SR3090PT maintains full 30A current capability up to 85°C case temperature, with linear derating beyond that point per the Forward Current Derating Curve.

Is the SR3090PT pin-compatible with other parts in the SR30xxPT family?

Yes - all SR30xxPT devices, including the SR3090PT, share identical TO-247AD (TO-3P) mechanical outline, pin assignment (Anode 1 / Cathode / Anode 2), and mounting footprint. Voltage variants differ only in internal die design and marking code; no PCB layout change is required when substituting within the family for voltage re-rating.

Does the SR3090PT have AEC-Q101 qualification?

The SR3090PT itself is not automatically AEC-Q101 qualified; however, the AEC-Q101-qualified version is explicitly offered as SR3090PTH (with 'H' suffix). The 'H' variant undergoes full stress testing per AEC-Q101 Rev D, including HTOL, temperature cycling, and HTRB. Standard SR3090PT is intended for industrial/commercial use unless the 'H' suffix is specified in the ordering code.

What is the typical forward voltage of the SR3090PT at rated current?

The SR3090PT exhibits a typical forward voltage (V_F) of 0.90 V per diode at 15A and 25°C junction temperature, as specified in the Electrical Specifications table. At full 30A average current and elevated temperature (e.g., 100°C), V_F rises to approximately 0.98 V - a value critical for calculating conduction losses in thermal design of the SR3090PT.

How does the dual-die configuration of the SR3090PT affect PCB layout?

The SR3090PT's dual-anode, common-cathode configuration allows independent connection of two input nodes (e.g., interleaved transformer secondaries) to a single output rail. This reduces cathode trace width requirements by ~50% versus two discrete diodes and simplifies thermal spreading across the heatsink. The SR3090PT's shared cathode also minimizes loop inductance in high-di/dt applications like LLC resonant converters.