Taiwan Semiconductor Corporation SRS1690H

Overview

SRS1690H from Taiwan Semiconductor is a 16A, 90V Schottky barrier rectifier in TO-263AB (D2PAK) package, featuring 0.90V forward voltage at 8A/25°C, 150A surge current capability, AEC-Q101 qualification, and junction temperature rating up to +150°C. It serves as a freewheeling or reverse-battery-protection diode in automotive DC/DC converters.

For engineers reviewing the SRS1690H datasheet, SRS1690H pinout, SRS1690H application, or SRS1690H equivalent, key selection criteria include its 90V V_RRM, low 0.90V V_F at rated current, AEC-Q101 compliance for automotive use, thermal resistance of 2°C/W, and moisture sensitivity level 1 handling requirements.

Technical Context

The SRS1690H integrates dual Schottky dies in a single TO-263AB package with guard ring structure for overvoltage protection. Its 90V repetitive peak reverse voltage and 5mA reverse leakage at 125°C support high-reliability operation in 12V/24V automotive power rails.

Thermal performance is defined by R_θJC = 2°C/W and maximum junction temperature of +150°C, enabling sustained 16A conduction under forced-air or PCB copper thermal management. The device uses matte tin-plated leads compliant with J-STD-002 solderability standards.

Key Specifications

Pinout & Package

TO-263AB (D2PAK) package with three terminals: Anode 1, Cathode (common), Anode 2 - configured as dual independent Schottky diodes sharing cathode connection. Case is electrically connected to cathode.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-16CTQ090 and MBR1690CT, the SRS1690H uniquely combines AEC-Q101 qualification, surface-mount TO-263AB packaging, and 2°C/W thermal resistance-making it the only option qualified for automated production of thermally demanding automotive power modules.

Availability

SRS1690H is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and LED headlamp drivers requiring stable component supply across extended temperature ranges and high-reliability manufacturing.

Supply support for SRS1690H 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 semiconductor manufacturer specializing in power discrete devices, including Schottky rectifiers, MOSFETs, and TVS diodes.

The SRS1690H belongs to TSC's AEC-Q101-qualified Schottky rectifier family designed specifically for automotive power conversion and protection applications operating up to +150°C junction temperature.

FAQ

What is the maximum junction temperature rating for the SRS1690H?

The SRS1690H has a maximum junction temperature (T_J) rating of +150°C, verified per AEC-Q101 stress testing. This allows uninterrupted operation in under-hood automotive environments where ambient temperatures exceed 105°C. Derating begins above 110°C case temperature, and the device maintains full 16A current capability up to that point. Thermal design must account for R_θJC = 2°C/W to ensure SRS1690H stays within limits under load.

Is the SRS1690H pin-compatible with other parts in the SRS16xxH series?

Yes, all SRS16xxH devices-including SRS1620H through SRS16100H-share identical TO-263AB (D2PAK) mechanical footprint and pinout. The SRS1690H uses the same three-terminal layout (Anode1–Cathode–Anode2) and marking orientation as SRS1650H and SRS1660H. Voltage rating differences do not affect physical compatibility, enabling board-level voltage scalability without layout changes.

Does the SRS1690H meet automotive reliability standards?

Yes, the SRS1690H is AEC-Q101 qualified, having passed all required stress tests including HTGB, HTRB, temperature cycling, and ESD. It also meets J-STD-020 moisture sensitivity level 1 and JESD201 class 2 whisker resistance. These certifications confirm suitability for automotive powertrain, body control, and lighting modules where long-term reliability under thermal and mechanical stress is mandatory.

What is the forward voltage specification for the SRS1690H at elevated temperature?

The SRS1690H forward voltage is specified as 0.90V maximum at I_F = 8A and T_J = 25°C. At T_J = 125°C, typical V_F increases to approximately 0.78V due to negative temperature coefficient of Schottky diodes. No maximum V_F is specified at high temperature, but measured data shows <0.82V at 8A/125°C-critical for predicting conduction loss in thermally constrained automotive designs using SRS1690H.

How does the guard ring feature improve reliability of the SRS1690H?

The guard ring in the SRS1690H prevents premature edge breakdown under high reverse bias, especially during transient overvoltage events like load dump. By controlling electric field distribution at the silicon periphery, it ensures stable 90V V_RRM performance across temperature and lifetime. This structure directly contributes to AEC-Q101 qualification success and extends operational life in noisy 24V automotive power rails where SRS1690H is deployed.