Taiwan Semiconductor Corporation SRS1660

Overview

SRS1660 from Taiwan Semiconductor is a 16A, 60V Schottky barrier surface-mount rectifier in TO-263AB (D2PAK) package, featuring dual-die construction, 150A surge capability, and 0.70V forward voltage at 8A/25°C. It serves as a high-efficiency output rectifier in DC-DC converters and SMPS secondary-side circuits.

For engineers reviewing the SRS1660 datasheet, SRS1660 pinout, SRS1660 application, or SRS1660 equivalent, key selection criteria include its 60V VRRM rating, 10mA reverse leakage at 100°C, junction-to-case thermal resistance of 2°C/W, and compatibility with automated SMT assembly per J-STD-002.

Technical Context

The SRS1660 integrates two parallel Schottky die in a single TO-263AB thermally optimized package, enabling high-current conduction with low forward drop. Its guard ring structure enhances ruggedness against transient overvoltage events common in switching power topologies.

Rated for continuous operation up to 150°C junction temperature, the device supports high-power-density designs where thermal management is critical. The 2°C/W R_θJC enables direct heatsinking to PCB copper or external metal slugs without intermediate thermal interface materials.

Key Specifications

Pinout & Package

TO-263AB (D2PAK) package with three terminals: Anode 1, Cathode (common), Anode 2 - configured as dual-anode, single-cathode topology for parallel or interleaved rectification.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-16CTQ060PBF and MBR1660CT, the SRS1660 offers superior thermal performance (2°C/W vs. ≥2.2°C/W) and native SMT readiness, enabling higher power density and lower assembly cost in new designs targeting TO-263AB footprint.

Availability

SRS1660 is available at Aetrix Electronics and suitable for switching mode power supplies, DC-DC converters, and AC-DC adapters requiring stable component supply, high surge robustness, and RoHS-compliant packaging.

Supply support for SRS1660 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 power electronics markets since 1979.

The SRS1660 belongs to TSC's high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact, thermally constrained power systems.

FAQ

What is the maximum junction temperature rating for the SRS1660?

The SRS1660 has a maximum junction temperature (T_J) rating of +150°C, allowing operation in high-ambient environments such as sealed industrial enclosures or telecom power shelves. This rating is confirmed in the Absolute Maximum Ratings table and supported by thermal characterization curves showing derated current capability above 125°C ambient.

Does the SRS1660 have a guard ring structure, and what benefit does it provide?

Yes, the SRS1660 incorporates a guard ring for overvoltage protection, as explicitly stated in its FEATURES section. This structure improves edge termination ruggedness, enhancing the device's ability to withstand transient voltage spikes-such as those occurring during MOSFET turn-off in flyback converters-without avalanche breakdown or parametric shift.

Is the SRS1660 suitable for lead-free reflow soldering processes?

Yes, the SRS1660 is qualified for lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 Class 2 solderability requirements, and its moisture sensitivity level is rated J-STD-020 Level 1-meaning it can be stored indefinitely at ≤30°C/60% RH and placed directly into reflow without baking.

What is the reverse leakage current specification for the SRS1660 at 60V and 100°C?

The SRS1660 specifies a maximum reverse leakage current (I_R) of 10 µA at V_R = 60V and T_J = 100°C, per the Electrical Specifications table. This low leakage supports efficient standby operation in energy-regulated adapters and minimizes power loss in always-on auxiliary rails.

How many diodes are integrated inside the SRS1660, and how are they configured?

The SRS1660 integrates two Schottky diodes in a dual-die configuration within a single TO-263AB package, wired as a common-cathode device (Anode 1 / Cathode / Anode 2). This arrangement supports interleaved or parallel rectification schemes while maintaining matched electrical and thermal behavior between both dies.