Taiwan Semiconductor Corporation SR20150PT

Overview

SR20150PT from Taiwan Semiconductor is a 20A, 150V Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring 1.02V forward voltage at 10A/25°C, 200A surge capability, and 1.5°C/W junction-to-case thermal resistance. It serves as a high-efficiency output rectifier in high-voltage DC-DC converters and industrial SMPS.

For engineers reviewing the SR20150PT datasheet, SR20150PT pinout, SR20150PT application, or SR20150PT equivalent, key selection criteria include V_RRM = 150V, I_F = 20A continuous, T_J(max) = 150°C, low VF for reduced conduction loss, and TO-247AD mechanical compatibility with heatsink mounting.

Technical Context

This device implements a dual-die Schottky structure optimized for high-voltage switching rectification. Its 150V V_RRM rating enables use in 48V–110V input DC-DC stages, while the 1.02V typical forward voltage at 10A balances efficiency and thermal management.

The TO-247AD package provides low 1.5°C/W R_θJC, supporting 20A continuous operation with adequate heatsinking. Guard ring design enhances transient overvoltage robustness, critical in flyback and resonant converter topologies.

Key Specifications

Pinout & Package

Package: TO-247AD (TO-3P), 3-terminal through-hole package with isolated tab (cathode-connected case). Matte tin-plated leads, UL 94V-0 molding compound, polarity marked on device body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20CPH15 and MUR20150CT, SR20150PT offers lower forward voltage and electrically isolated cathode tab-critical for grounded heatsink designs-while maintaining identical voltage/current ratings and TO-247AD footprint compatibility.

Availability

SR20150PT is available at Aetrix Electronics and suitable for server power supplies, industrial DC-DC converters, and LED streetlight drivers requiring stable component supply across multi-year production cycles.

Supply support for SR20150PT 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 power semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial and automotive markets since 1979.

The SR20xxPT series targets high-efficiency AC-DC and DC-DC power conversion, emphasizing ruggedness, thermal performance, and compliance with industrial safety standards including UL and AEC-Q101.

FAQ

What is the maximum junction temperature rating for SR20150PT?

The SR20150PT has a maximum junction temperature (T_J(max)) of +150°C, verified per datasheet revision J2103. This rating allows operation in high-ambient environments such as enclosed industrial power supplies. Derating curves in Figure 1 confirm 20A continuous current is sustainable up to 100°C case temperature when mounted on a heatsink with ≤1.5°C/W thermal resistance. The SR20150PT must not exceed this limit to maintain reliability and warranty coverage.

Is SR20150PT pin-compatible with other parts in the SR20xxPT family?

Yes, all SR20xxPT devices-including SR20150PT-share identical TO-247AD (TO-3P) package dimensions, pinout, and mechanical mounting interface. The anode, cathode, and tab terminals are physically and electrically consistent across the series. Voltage rating differences (20V to 150V) do not affect footprint or soldering requirements, enabling drop-in replacement during design iteration or voltage-scaling upgrades without PCB changes.

Does SR20150PT meet AEC-Q101 qualification?

The base SR20150PT part is not AEC-Q101 qualified; however, the variant SR20150PTH (with 'H' suffix) is explicitly listed as AEC-Q101 qualified per datasheet footnote. SR20150PT itself meets industrial-grade reliability standards including JESD201 Class 2 whisker testing and UL 94V-0 flammability, but automotive qualification requires the 'H' version. Always verify ordering code suffix when targeting automotive applications.

What is the reverse leakage current specification for SR20150PT at 150V?

At rated V_R = 150V and T_J = 25°C, the SR20150PT exhibits a maximum reverse leakage current (I_R) of 100 µA per diode, as specified in the Electrical Specifications table. At elevated temperature (T_J = 100°C), leakage rises to 5 mA. These values are measured under standardized pulse conditions (PW = 30ms), ensuring repeatability across production lots and enabling accurate standby power budgeting in energy-sensitive designs using SR20150PT.

How does the guard ring feature improve reliability in SR20150PT?

The guard ring in SR20150PT provides edge termination that controls electric field distribution at the silicon periphery, preventing premature avalanche breakdown during transient overvoltage events. This design allows the SR20150PT to sustain repetitive 150V reverse stress without degradation-even under surge conditions exceeding IEC 61000-4-5 Level 3-while maintaining its rated V_RRM. It eliminates need for external snubbers in many flyback and LLC converter applications, reducing BOM count and improving long-term field reliability of systems using SR20150PT.