Taiwan Semiconductor Corporation SRS2090H

Overview

SRS2090H from Taiwan Semiconductor is a 20A, 90V Schottky barrier surface-mount rectifier in TO-263AB (D2PAK) package, featuring 0.92V forward voltage at 10A/25°C, 200A surge capability, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or reverse-battery protection diode in DC/DC converters and car lighting systems.

For engineers reviewing the SRS2090H datasheet, SRS2090H pinout, SRS2090H application, or SRS2090H equivalent, key selection criteria include its 90V repetitive peak reverse voltage, 1.5°C/W junction-to-case thermal resistance, 100µA max reverse leakage at 90V/25°C, and dual-die configuration enabling high-current handling in compact automotive power designs.

Technical Context

The SRS2090H employs a dual-die Schottky structure optimized for low conduction loss and fast switching in high-frequency power conversion. Its 90V V_RRM, 200A I_FSM, and 1.5°C/W R_θJC support robust operation under transient overloads and thermal stress in automotive environments.

AEC-Q101 qualification confirms suitability for under-hood applications; guard ring design enhances overvoltage ruggedness, while moisture sensitivity level 1 (per J-STD-020) ensures compatibility with standard reflow processes without baking.

Key Specifications

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount, single-row 3-terminal configuration with exposed thermal pad. Matte tin-plated leads, UL 94V-0 molding compound, polarity marked on top surface.

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 SRS2090H delivers superior efficiency via lower forward voltage and better thermal performance in a smaller AEC-Q101-qualified package-making it optimal for space- and thermal-constrained automotive power stages.

Availability

SRS2090H is available at Aetrix Electronics and suitable for automotive ECUs, LED lighting drivers, and DC/DC converters requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for SRS2090H 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 discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.

The SRS2090H belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-current, high-reliability automotive power conversion where low forward voltage, thermal robustness, and transient ruggedness are critical.

FAQ

What is the maximum junction temperature rating for the SRS2090H?

The SRS2090H has a maximum junction temperature (T_J) of +150°C, validated per its AEC-Q101 qualification. This rating allows reliable operation in under-hood automotive environments where ambient temperatures exceed 105°C. The device's 1.5°C/W junction-to-case thermal resistance supports effective heat transfer to the PCB copper pour or external heatsink, ensuring the SRS2090H remains within safe thermal limits even at full 20A continuous current.

Is the SRS2090H pin-compatible with other devices in the SRS20xxH series?

Yes-the SRS2090H shares identical TO-263AB (D2PAK) package dimensions, pinout, and thermal pad layout with all members of the SRS2020H–SRS20150H family. This enables direct board-level substitution across voltage ratings (20V to 150V) without PCB redesign. However, electrical parameters-including V_F, I_R, and thermal derating curves-vary by voltage grade, so system validation is required when swapping the SRS2090H for another SRS20xxH variant.

Does the SRS2090H support reverse battery protection in automotive systems?

Yes-the SRS2090H is routinely deployed in reverse battery protection circuits due to its 90V V_RRM, low 100µA reverse leakage at 25°C, and AEC-Q101 qualification. When placed in series with the battery input, it blocks reverse polarity while passing forward current with only 0.92V drop at 10A. Its guard ring structure further enhances survivability during ISO 7637-2 load-dump transients, making the SRS2090H a robust choice for protecting sensitive automotive ECUs and lighting modules.

What is the surge current rating of the SRS2090H and how is it tested?

The SRS2090H is rated for 200A peak non-repetitive forward surge current (I_FSM) under an 8.3ms single half-sine wave condition, per JEDEC standards. This rating reflects its ability to withstand short-duration inrush or fault currents-such as those occurring during motor startup or capacitor charging-without permanent degradation. The test is performed at T_A = 25°C with the device mounted on a standard FR-4 PCB, and the SRS2090H maintains parametric integrity after such events when operated within its specified thermal limits.

How does the dual-die configuration of the SRS2090H improve performance?

The SRS2090H integrates two independent Schottky dies in a single TO-263AB package, sharing a common cathode terminal. This architecture reduces effective forward voltage drop and thermal resistance compared to a single-die 20A device, enabling higher current density and improved thermal distribution. In practice, the dual-die layout allows the SRS2090H to sustain 20A continuous current with lower localized heating-critical for automotive applications where airflow is limited and ambient temperatures are elevated.