Taiwan Semiconductor Corporation SR2050PTH

Overview

SR2050PTH from Taiwan Semiconductor is a 20A, 50V AEC-Q101-qualified Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring 0.70 V forward voltage at 10 A and 25°C, 200 A surge capability, 1.5 °C/W junction-to-case thermal resistance, and guard ring overvoltage protection - used in automotive-grade DC/DC converters and industrial SMPS.

For engineers reviewing the SR2050PTH datasheet, SR2050PTH pinout, SR2050PTH application, or SR2050PTH equivalent, key selection criteria include its AEC-Q101 qualification, 50 V repetitive peak reverse voltage, dual-die configuration, low VF for high-efficiency rectification, and UL recognition under file #E-326243.

Technical Context

This Schottky rectifier uses dual silicon dies in a single TO-247AD package to deliver 20 A average forward current with minimal conduction loss. Its 50 V V_RRM and 0.70 V V_F at 10 A / 25°C enable efficient operation in mid-voltage DC/DC stages where thermal management and reliability under transient surge are critical.

The device integrates a guard ring structure for enhanced overvoltage ruggedness and meets JESD201 Class 2 whisker resistance. With T_J max rated at 125°C (derated above 25°C ambient), it supports continuous operation in constrained thermal environments typical of automotive power modules and industrial adapters.

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 polarity marked on device body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20CPH05-M3 and MUR2050CT, SR2050PTH uniquely combines AEC-Q101 qualification, Schottky low-VF performance, and TO-247AD thermal capability - making it the only choice for automotive-grade, high-efficiency, high-current rectification where reliability and thermal headroom are co-constrained.

Availability

SR2050PTH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS, and consumer adapters requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101-compliant sourcing.

Supply support for SR2050PTH 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 automotive, industrial, and computing markets since 1979.

The SR20xPT series was developed specifically for high-reliability, high-current Schottky rectification in automotive and industrial power conversion - emphasizing AEC-Q101 compliance, thermal robustness, and UL safety recognition.

FAQ

What is the maximum junction temperature rating for SR2050PTH?

The SR2050PTH has a maximum junction temperature (T_J) rating of +125°C under continuous operation. This rating applies across its full operating range and is validated per AEC-Q101 stress testing. Derating begins above 25°C ambient, and the device maintains specified electrical performance up to this limit when thermal resistance (R_θJC = 1.5 °C/W) is properly managed via heatsink mounting. SR2050PTH is not rated for 150°C operation - that specification applies only to higher-voltage variants like SR20150PTH.

Is SR2050PTH pin-compatible with other parts in the SR20xPT family?

Yes, SR2050PTH shares identical TO-247AD (TO-3P) mechanical footprint, pinout, and terminal assignment with all SR20xPT variants (e.g., SR2020PTH, SR20100PTH). All devices feature anode (lead 1), cathode (lead 2), and cathode-connected tab. However, voltage ratings, forward voltage, and reverse leakage differ across the family - so electrical substitution requires validation against circuit voltage and thermal margins.

Does SR2050PTH require a heatsink in typical 20 A operation?

Yes, SR2050PTH requires a heatsink for sustained 20 A operation. At 20 A and 0.70 V V_F, power dissipation exceeds 14 W. With R_θJC = 1.5 °C/W and ambient at 70°C, junction temperature would exceed 125°C without additional thermal resistance reduction. A heatsink providing ≤ 2.5 °C/W total system thermal resistance (including interface material) is recommended to maintain safe operation.

What does the "H" suffix in SR2050PTH signify?

The "H" suffix in SR2050PTH explicitly denotes AEC-Q101 qualification. This means the device has undergone full stress testing per the AEC-Q101 standard - including HTSL, TC, UHAST, and mechanical shock - and is certified for use in automotive electronic systems. Non-H versions (e.g., SR2050PT) lack this qualification and are intended for commercial/industrial applications only.

How does SR2050PTH's guard ring improve reliability in automotive applications?

SR2050PTH's integrated guard ring enhances edge termination robustness, increasing the device's ability to withstand voltage transients such as load dump (up to ±60 V) and ISO 7637-2 pulses. This structure suppresses premature avalanche breakdown at the die periphery, allowing the device to sustain higher peak reverse voltages without degradation - a critical requirement for automotive power rails exposed to harsh electrical environments.