Taiwan Semiconductor Corporation SR1640PT

Overview

SR1640PT from Taiwan Semiconductor is a 16A, 40V repetitive peak reverse voltage Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring low forward voltage (0.55 V at 8 A, 25°C), high surge current capability (200 A), and junction temperature rating up to +150°C. It serves as a primary output rectifier in high-efficiency SMPS for monitors and DC-DC converters.

For engineers reviewing the SR1640PT datasheet, SR1640PT pinout, SR1640PT application, or SR1640PT equivalent, key selection criteria include its 40 V V_RRM, dual-die thermal performance (R_θJC = 3°C/W), AEC-Q101 qualification option, and UL recognition (E-326243) for safety-critical power stages.

Technical Context

The SR1640PT employs a dual-die Schottky structure optimized for low conduction loss and fast switching, with guard ring protection enabling robust overvoltage tolerance. Its 0.55 V forward voltage at 8 A and 25°C directly reduces power dissipation in high-current, medium-voltage rectification paths.

Thermally, it delivers R_θJC = 3°C/W into the case, supporting continuous 16 A operation up to +125°C ambient when mounted with ≤1.13 N·m torque on heatsink-compatible TO-247AD hardware. Reverse leakage remains ≤500 µA at 25°C and ≤15 mA at 100°C under rated 40 V reverse bias.

Key Specifications

Pinout & Package

Package: TO-247AD (TO-3P) - 3-terminal through-hole outline with isolated tab, UL 94V-0 molding compound, matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker testing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-16CTH04-M3 and MUR1640CT, the SR1640PT offers superior thermal performance (3°C/W vs. ≥5.5°C/W), lower conduction loss (0.55 V vs. ≥0.62 V), and AEC-Q101 availability-making it optimal for space-constrained, high-efficiency, or automotive-adjacent power systems.

Availability

SR1640PT is available at Aetrix Electronics and suitable for switching mode power supplies, DC-DC converters, and monitor/TV power boards requiring stable component supply with consistent thermal and electrical performance across production lots.

Supply support for SR1640PT 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 rectifiers, TVS devices, and MOSFETs for industrial and consumer markets.

The SR-series Schottky rectifiers are engineered for high-current, medium-voltage secondary-side power conversion in compact, thermally demanding applications such as flat-panel display power supplies and universal adapters.

FAQ

What is the maximum junction temperature rating for SR1640PT?

The SR1640PT has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet (Version J2103). This extended rating allows reliable operation in enclosed industrial environments or high-ambient applications where thermal headroom is limited. The SR1640PT maintains specified electrical parameters up to this limit when mounted with proper heatsinking and torque control.

Is SR1640PT pin-compatible with other parts in the SR16xxPT family?

Yes, all SR16xxPT variants-including SR1620PT, SR1630PT, SR1640PT, SR1650PT, and up to SR16150PT-share identical TO-247AD (TO-3P) mechanical footprint, pinout, and terminal assignment. The SR1640PT uses the same Anode–Cathode–Tab configuration and mounting torque specification (≤1.13 N·m), enabling voltage-scaling design reuse without PCB changes.

Does SR1640PT meet RoHS and halogen-free requirements?

Yes, the SR1640PT is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the "Features" section of the Taiwan Semiconductor datasheet (Version J2103). The molding compound is UL 94V-0 rated, and terminals are matte tin plated to meet J-STD-002 solderability standards-ensuring environmental compliance and process compatibility for lead-free assembly.

What is the forward voltage of SR1640PT under typical operating conditions?

The SR1640PT exhibits a typical forward voltage (V_F) of 0.55 V at 8 A and 25°C, as measured per pulse test (PW = 0.3 ms). At full rated current (16 A), V_F rises to approximately 0.62 V at 25°C. This low V_F directly reduces conduction losses in high-current output stages, contributing to improved overall converter efficiency and reduced thermal load.

Can SR1640PT be used in automotive applications?

The SR1640PT itself is not AEC-Q101 qualified, but an AEC-Q101 qualified variant-SR1640PTH-is available per the ordering information table (J2103 datasheet). For automotive-grade deployment, SR1640PTH must be specified; it shares identical electrical and thermal specs with SR1640PT but undergoes additional stress testing per AEC-Q101. Standard SR1640PT is intended for industrial and consumer power supplies.