Taiwan Semiconductor Corporation SR1650PTH

Overview

SR1650PTH from Taiwan Semiconductor is a 16A, 50V AEC-Q101-qualified Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring 0.70 V 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 DC-DC converters and industrial SMPS.

For engineers reviewing the SR1650PTH datasheet, SR1650PTH pinout, SR1650PTH application, or SR1650PTH equivalent, key selection criteria include its 50V V_RRM, AEC-Q101 qualification, dual-die construction, thermal performance under forced-air or heatsink mounting, and compatibility with 8.3ms surge waveforms in high-reliability power supplies.

Technical Context

This device implements a dual-die Schottky architecture optimized for low conduction loss and fast recovery in unidirectional DC output stages. Its 50V repetitive peak reverse voltage and 100V RMS reverse rating support operation in 36–48V nominal input systems with transient margin.

The junction temperature range spans –55°C to +150°C, enabling use in under-hood automotive environments. Thermal resistance of 3°C/W (junction-to-case) requires direct mechanical mounting to a heatsink for sustained 16A operation at elevated ambient temperatures.

Key Specifications

Pinout & Package

Package: TO-247AD (TO-3P), 3-terminal through-hole package with isolated tab (cathode-connected case), matte tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 molding compound, and 5.6g mass.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-16CTH05-M3 and MUR1650CTG, SR1650PTH uniquely combines AEC-Q101 compliance, Schottky-level V_F, and TO-247AD thermal performance-making it the sole option for thermally constrained, automotive-qualified 50V rectification.

Availability

SR1650PTH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS, and monitor power supplies requiring stable component supply, long-lifecycle assurance, and AEC-Q101-compliant sourcing.

Supply support for SR1650PTH 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 SR16xPT family was designed specifically for high-reliability, high-current rectification in automotive and industrial power conversion, emphasizing thermal robustness, surge resilience, and qualification-grade consistency.

FAQ

What is the maximum junction temperature rating for SR1650PTH?

The SR1650PTH has a maximum junction temperature (T_J) of +150°C, validated across its full operating range from –55°C to +150°C. This extended rating allows reliable deployment in under-hood automotive locations and sealed industrial enclosures where ambient temperatures exceed 105°C. The SR1650PTH maintains specified electrical parameters-including forward voltage and leakage current-up to this limit when thermal design adheres to R_θJC = 3°C/W.

Is SR1650PTH pin-compatible with other parts in the SR16xPT series?

Yes, all SR16xPT and SR16xPTH variants-including SR1650PTH-share identical TO-247AD (TO-3P) mechanical footprint, pin assignment, and terminal geometry. This allows direct substitution across voltage grades (20V–150V) without PCB layout changes, provided thermal and electrical system margins accommodate the selected V_RRM and leakage characteristics of the replacement part.

Does SR1650PTH require a heatsink for 16A continuous operation?

Yes, SR1650PTH requires a heatsink for sustained 16A operation. With R_θJC = 3°C/W and typical V_F ≈ 0.70V, power dissipation reaches ~11.2W at full load. Without heatsinking, case temperature would exceed safe limits rapidly. Mounting to a ≥15 cm² aluminum heatsink (with thermal interface material) keeps T_C ≤ 85°C at 25°C ambient, satisfying derating curves in the SR1650PTH datasheet.

What does the "H" suffix in SR1650PTH signify?

The "H" suffix in SR1650PTH indicates full AEC-Q101 qualification, covering stress tests such as high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and electrostatic discharge (HBM). This certification confirms suitability for automotive powertrain and chassis applications where reliability under thermal, mechanical, and electrical stress is mandatory-distinct from standard SR1650PT.

How does SR1650PTH's forward voltage compare to SR1640PTH and SR1660PTH?

SR1650PTH specifies V_F = 0.70V (max) at 8A/25°C, positioned between SR1640PTH (0.55V) and SR1660PTH (0.70V). While SR1640PTH offers lower conduction loss, its 40V V_RRM lacks margin for 48V systems. SR1660PTH matches SR1650PTH's V_F but raises V_RRM to 60V-increasing junction capacitance slightly and reducing switching speed. SR1650PTH thus balances optimal V_F, sufficient voltage margin, and minimal capacitive loading for 48V DC-DC outputs.