Taiwan Semiconductor Corporation SRS1620H

Overview

SRS1620H from Taiwan Semiconductor is a 16A, 20V repetitive peak reverse voltage Schottky barrier rectifier in TO-263AB (D2PAK) package, featuring 0.55V forward voltage at 8A/25°C, 150A surge current capability, and AEC-Q101 qualification for automotive-grade reliability in low-voltage DC/DC converters and reverse battery protection circuits.

For engineers reviewing the SRS1620H datasheet, SRS1620H pinout, SRS1620H application, or SRS1620H equivalent, key selection criteria include its 20V V_RRM, dual-die configuration, junction-to-case thermal resistance of 2°C/W, moisture sensitivity level 1 rating, and compliance with JESD201 Class 2 whisker testing.

Technical Context

The SRS1620H implements a dual-die Schottky barrier structure optimized for low forward voltage drop and high switching speed, enabling efficient operation in high-frequency inverters and synchronous rectification topologies. Its guard ring design provides overvoltage protection while maintaining stable reverse leakage of ≤500 µA at 25°C and rated VR.

Thermally, the device supports continuous operation up to 125°C junction temperature (with derating above 25°C case temperature), and its TO-263AB package delivers 2°C/W junction-to-case thermal resistance-critical for high-current power stage designs requiring minimal thermal interface resistance.

Key Specifications

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount, single-ended anode-cathode configuration with exposed cathode tab for thermal and electrical connection. 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-16CTQ020PbF and NSR1620HT1G, the SRS1620H offers the lowest thermal resistance (2°C/W) among AEC-Q101-qualified 20V/16A Schottkys, enabling higher power density in space-constrained automotive modules without sacrificing reliability.

Availability

SRS1620H is available at Aetrix Electronics and suitable for automotive power management, industrial DC/DC conversion, and LED lighting systems requiring stable component supply with full AEC-Q101 traceability and long-term production continuity.

Supply support for SRS1620H 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 consumer markets since 1979.

The SRS1620H belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability 12V/24V automotive subsystems demanding low V_F, high surge tolerance, and robust thermal performance in TO-263AB packaging.

FAQ

What is the maximum junction temperature rating for the SRS1620H?

The SRS1620H has a maximum junction temperature (T_J) rating of +125°C under continuous operation. This rating is specified in the Absolute Maximum Ratings table and applies across its full operating voltage range. Derating curves in the datasheet define allowable forward current reduction above 25°C case temperature to maintain this limit. The SRS1620H must not exceed 125°C at the silicon junction during normal use to ensure long-term reliability and AEC-Q101 compliance.

Is the SRS1620H pin-compatible with other parts in the SRS16xH family?

Yes, all SRS16xH devices-including SRS1620H, SRS1630H, and up to SRS16100H-share identical TO-263AB (D2PAK) mechanical dimensions, pinout, and terminal configuration. The only functional difference is V_RRM, which scales from 20V to 100V. This allows direct board-level substitution within the same footprint when voltage requirements change, provided thermal and surge margins remain acceptable for the new rating. The SRS1620H itself uses the same physical layout as the rest of the family.

Does the SRS1620H require special handling for moisture sensitivity?

No-the SRS1620H is rated Moisture Sensitivity Level (MSL) 1 per J-STD-020, meaning it has unlimited floor life and does not require dry packing, baking, or controlled storage prior to reflow soldering. This simplifies manufacturing logistics and eliminates moisture-related popcorning risk during standard lead-free reflow profiles. The SRS1620H can be stored and processed under ambient factory conditions without time restrictions, unlike higher-MSL discrete components.

What is the typical forward voltage of the SRS1620H at rated current?

The typical forward voltage (V_F) of the SRS1620H is 0.55 V at 8 A and 25°C junction temperature, as confirmed in the Electrical Specifications table. This value is measured under pulsed conditions (0.3 ms pulse width) to avoid self-heating effects. At full rated 16 A continuous current, V_F increases due to resistive heating and junction temperature rise; actual system-level V_F must be calculated using thermal models incorporating R_θJC = 2°C/W and board-level thermal resistance. The SRS1620H maintains this low V_F across its qualified automotive temperature range.

How is the SRS1620H marked on the device body?

The SRS1620H is marked with "SRS 1620" on the top surface of the TO-263AB package, followed by date code (YWW format), factory code (F), and green compound indicator (G). The marking follows the layout shown in the official package drawing (Version A2103). Polarity is indicated by a cathode band adjacent to the tab side. This marking scheme is consistent across the SRS16xH family and enables visual identification and traceability. No additional alphanumeric codes or suffixes appear on the SRS1620H device body beyond those specified in the ordering information section.