Taiwan Semiconductor Corporation SR1620PTH

Overview

SR1620PTH from Taiwan Semiconductor is a 16A, 20V AEC-Q101-qualified Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring 0.55V forward voltage at 8A/25°C, 200A surge capability, and junction-to-case thermal resistance of 3°C/W. It serves as a high-efficiency output rectifier in automotive-grade SMPS and DC-DC converters.

For engineers reviewing the SR1620PTH datasheet, SR1620PTH pinout, SR1620PTH application, or SR1620PTH equivalent, key selection criteria include its AEC-Q101 qualification, low VF at rated current, dual-die construction for parallel conduction, and UL recognition under file E-326243 - all critical for reliable operation in thermally constrained, safety-certified power systems.

Technical Context

This Schottky rectifier uses dual-die configuration in a single TO-247AD package to support high-current conduction paths while maintaining low forward voltage drop. Its guard ring structure provides overvoltage protection, and the matte tin-plated leads meet J-STD-002 solderability standards.

Rated for TJ = –55°C to +125°C (with derating above 125°C), it delivers 16A average forward current with 200A non-repetitive surge rating (8.3ms half-sine). Thermal performance is defined by R_θJC = 3°C/W, enabling direct heatsink mounting without thermal interface material in many designs.

Key Specifications

Pinout & Package

Package: TO-247AD (TO-3P) - Isolated metal tab, 3-terminal through-hole package with center anode/cathode configuration and mechanical mounting hole. Mounting torque ≤1.13 N·m.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-16CTQ020P-M3/45 and MUR1620CTG, SR1620PTH uniquely combines AEC-Q101 qualification, UL recognition, and 0.55V forward voltage in TO-247AD - making it the only option qualified for thermally demanding, safety-critical automotive and medical power applications.

Availability

SR1620PTH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS outputs, and medical power adapters requiring stable component supply with long-term lifecycle assurance.

Supply support for SR1620PTH 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 and automotive markets since 1979.

The SR16xPT series was developed specifically for high-reliability, high-current rectification in automotive-grade power conversion systems - emphasizing AEC-Q101 compliance, thermal robustness, and safety certification readiness.

FAQ

What does the 'H' suffix in SR1620PTH indicate?

The 'H' suffix in SR1620PTH denotes AEC-Q101 qualification, confirming that the device has passed stress tests for automotive-grade reliability including temperature cycling, humidity bias, and high-temperature operating life. This makes SR1620PTH suitable for under-hood and cabin power systems where extended temperature range and long-term stability are required.

Is SR1620PTH pin-compatible with standard TO-247AD rectifiers?

Yes, SR1620PTH uses the industry-standard TO-247AD (TO-3P) footprint with three terminals: anode, cathode, and electrically connected metal tab. Its pinout matches JEDEC MS-001AC, enabling direct replacement in existing layouts designed for TO-247AD-packaged Schottky rectifiers without PCB modification.

What is the maximum continuous forward current rating for SR1620PTH at 100°C case temperature?

At 100°C case temperature, SR1620PTH supports approximately 11.5A continuous forward current based on its derating curve. The datasheet specifies 16A at T_C ≤ 75°C, with linear derating to zero at 150°C - ensuring predictable thermal performance across industrial operating conditions.

Does SR1620PTH require a thermal pad or insulator when mounted to a heatsink?

No, SR1620PTH's metal tab is electrically connected to the cathode, so electrical isolation is required only if the heatsink is not referenced to cathode potential. Standard mica or ceramic washers are sufficient; no thermal pad is needed due to its low R_θJC of 3°C/W and direct metal-to-metal contact capability.

How does the guard ring feature improve reliability in SR1620PTH?

The guard ring in SR1620PTH provides edge termination that suppresses premature avalanche breakdown at the die periphery under transient overvoltage conditions. This enhances ruggedness during line surges or inductive switching events - reducing failure risk without requiring external clamping components in SMPS and adapter designs.