Taiwan Semiconductor Corporation SR1690

Overview

SR1690 from Taiwan Semiconductor is a 16A, 90V repetitive peak reverse voltage Schottky barrier rectifier in TO-220AB package, featuring 0.90V forward voltage at 8A and 25°C, 170A surge current capability, and AEC-Q101 qualification option (SR1690H). It serves as a high-efficiency output rectifier in automotive-grade DC-DC converters.

For engineers reviewing the SR1690 datasheet, SR1690 pinout, SR1690 application, or SR1690 equivalent, key selection criteria include its 90V V_RRM, dual-die thermal performance (R_θJC = 2.5°C/W), low I_R of 100µA at 25°C, and compatibility with high-frequency switching topologies requiring fast recovery and minimal conduction loss.

Technical Context

The SR1690 operates as a single-phase, dual-die Schottky rectifier with unidirectional conduction and no minority-carrier storage delay. Its junction-to-case thermal resistance of 2.5°C/W enables direct heatsink mounting for sustained 16A operation at T_J ≤ 125°C.

It sustains 170A non-repetitive surge current (8.3ms half-sine) and exhibits 10,000 V/μs critical dv/dt rating, supporting robust operation in noisy SMPS environments with rapid voltage transients.

Key Specifications

Pinout & Package

Package: TO-220AB - Insulated case with center tab (cathode), two outer leads (anodes), matte tin-plated terminals compliant with J-STD-002 solderability, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-16CTQ090PbF and MBR1690CT, the SR1690 uniquely combines dual-anode flexibility, 2.5°C/W thermal resistance, and AEC-Q101 availability-making it optimal for space-constrained, thermally demanding automotive and industrial converters requiring layout-level EMI control.

Availability

SR1690 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS secondary rectification, and telecom AC-DC adapters requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant variants (SR1690H).

Supply support for SR1690 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, specializing in power devices, rectifiers, and protection components since 1979.

The SR16xx series was designed specifically for high-current, high-frequency switching power supplies in automotive and industrial environments where thermal efficiency, surge robustness, and qualification compliance are mandatory.

FAQ

What is the maximum junction temperature rating for the SR1690?

The SR1690 has a maximum junction temperature (T_J) rating of 125°C under standard conditions. This limit applies to continuous operation and is validated across the full 16A forward current range. Derating curves in the official datasheet define allowable current reduction above 25°C case temperature. The SR1690 must not exceed 125°C at the silicon junction during operation to ensure reliability and lifetime compliance.

Does the SR1690 have AEC-Q101 qualification?

The base SR1690 is not AEC-Q101 qualified; however, the SR1690H variant is explicitly qualified per AEC-Q101. The "H" suffix denotes full stress testing including temperature cycling, mechanical shock, and humidity bias. Designers requiring automotive under-hood deployment must specify SR1690H-not SR1690-to meet qualification requirements. Both share identical electrical parameters and TO-220AB packaging.

How does the dual-die configuration of the SR1690 affect PCB layout?

Unlike single-die TO-220 rectifiers, the SR1690's dual-die configuration provides two isolated anode terminals (Leads 1 and 2) with a common cathode (center tab). This enables independent anode routing to reduce loop inductance in interleaved or multi-phase converters. Layout must maintain equal trace length and impedance between anodes to avoid current imbalance, and the center tab must be thermally anchored without shorting either anode.

What is the reverse leakage current of the SR1690 at elevated temperature?

At rated 90V reverse voltage and 100°C junction temperature, the SR1690 exhibits a maximum reverse leakage current (I_R) of 5mA per diode. This value is confirmed in the Electrical Specifications table and reflects worst-case behavior under thermal stress. At 25°C and 90V, leakage is limited to 100µA-critical for low-power standby modes in energy-efficient systems using the SR1690.

Can the SR1690 replace the SR16100 in a design?

No-the SR1690 and SR16100 are distinct voltage-rated variants: SR1690 has V_RRM = 90V, while SR16100 is rated for 100V. Substituting SR1690 for SR16100 risks reverse breakdown if system transients exceed 90V. Though both share identical package, current rating, and thermal specs, the 10V margin difference is not interchangeable without circuit-level validation of worst-case reverse voltage stress.