Taiwan Semiconductor Corporation SR2090PT

Overview

SR2090PT from Taiwan Semiconductor is a 20A, 90V Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring 0.92V forward voltage at 10A/25°C, 200A surge capability, and AEC-Q101 qualification option. It serves as a high-efficiency output rectifier in DC-DC converters and industrial SMPS where low conduction loss and thermal robustness are critical.

For engineers reviewing the SR2090PT datasheet, SR2090PT pinout, SR2090PT application, or SR2090PT equivalent, key selection factors include its 90V V_RRM, 1.5°C/W junction-to-case thermal resistance, 5mA reverse leakage at 125°C, dual-die construction, and UL recognition under file #E-326243.

Technical Context

This device implements a dual-die Schottky structure with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its thermal design supports 125°C maximum junction temperature operation with derating above 75°C case temperature.

The SR2090PT delivers stable switching performance in hard-switched topologies due to low stored charge and absence of minority-carrier recovery, enabling high-frequency operation up to 100kHz without significant switching loss penalty.

Key Specifications

Pinout & Package

Package: TO-247AD (TO-3P), 3-terminal through-hole package with isolated mounting hole, UL 94V-0 molding compound, and polarity marked on case.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20CPH09-M3 and MUR2090CT, the SR2090PT offers optimal balance of AEC-Q101 availability, UL recognition, and thermal resistance-making it preferred for industrial and automotive-qualified designs where certification and thermal predictability are prioritized over marginal V_F reduction.

Availability

SR2090PT is available at Aetrix Electronics and suitable for switching mode power supplies, DC-DC converters, and industrial adapters requiring stable component supply with traceable sourcing and long-term lifecycle support.

Supply support for SR2090PT 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, computing, and consumer markets since 1979.

The SR20xxPT series was developed specifically for high-current, medium-voltage Schottky rectification in space-constrained power systems demanding AEC-Q101 compliance, UL safety recognition, and robust thermal performance.

FAQ

What is the maximum junction temperature rating for SR2090PT?

The SR2090PT has a maximum junction temperature rating of 125°C under continuous operation. This rating applies across its full operating current range when mounted with appropriate heatsinking and airflow. The device supports derated operation up to 150°C in specific variants, but the standard SR2090PT is specified for 125°C maximum TJ. Thermal design must ensure junction temperature remains within this limit during worst-case load and ambient conditions to maintain reliability and parametric stability.

Is SR2090PT pin-compatible with other parts in the SR20xxPT family?

Yes, all SR20xxPT devices-including SR2090PT-share identical TO-247AD (TO-3P) package dimensions, pinout, and mechanical mounting features. The anode-cathode-anode terminal arrangement and lead pitch are uniform across the series, enabling direct substitution based on required V_RRM without PCB layout changes. However, electrical parameters such as V_F and I_R vary by voltage grade, so system-level validation is required after substitution.

Does SR2090PT have AEC-Q101 qualification?

The SR2090PT is available in an AEC-Q101 qualified version, designated as SR2090PTH. Standard SR2090PT units are not automatically qualified; qualification requires explicit ordering code suffix "H". AEC-Q101 testing covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing-ensuring suitability for automotive under-hood applications where reliability under thermal and mechanical stress is critical.

What is the forward voltage specification for SR2090PT at elevated temperature?

At 10A and 125°C junction temperature, the SR2090PT exhibits a typical forward voltage of approximately 0.75V-lower than its 0.92V value at 25°C due to the negative temperature coefficient of Schottky diodes. This behavior reduces conduction loss at high temperature, improving thermal stability in thermally constrained designs. The datasheet specifies maximum V_F only at 25°C; actual high-temperature V_F should be verified using the device's forward characteristic curve (Figure 4) for precise thermal modeling.

How does the guard ring feature improve reliability in SR2090PT?

The guard ring in SR2090PT mitigates electric field crowding at the semiconductor junction periphery, preventing premature avalanche breakdown under transient overvoltage conditions. This structural enhancement extends operational life in applications exposed to line surges or inductive kickback, such as motor drives and industrial SMPS. Unlike planar diodes without guard rings, SR2090PT maintains stable V_RRM performance over extended thermal cycling and voltage stress, directly contributing to its UL recognition and AEC-Q101 qualification readiness.