Taiwan Semiconductor Corporation SR20100PT

Overview

SR20100PT from Taiwan Semiconductor is a 20A, 100V Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring low forward voltage (0.92 V @ 10 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 DC/DC converters and industrial SMPS.

For engineers reviewing the SR20100PT datasheet, SR20100PT pinout, SR20100PT application, or SR20100PT equivalent, key selection criteria include its 100 V repetitive peak reverse voltage, dual-die configuration for thermal sharing, UL Recognized status (E-326243), AEC-Q101 qualification option, and 1.5 °C/W junction-to-case thermal resistance.

Technical Context

This Schottky rectifier uses dual silicon dies in a single TO-247AD package to distribute thermal load and support high-current operation. Its guard ring structure provides overvoltage protection, and matte tin-plated leads meet J-STD-002 solderability requirements.

The device operates across -55°C to +150°C junction temperature range, with reverse leakage limited to 100 µA at 25°C and 5 mA at 125°C under rated 100 V reverse bias - critical for maintaining efficiency in high-temperature power supplies.

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. Weight: 5.60 g. UL 94V-0 molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20CPH10-M3 and MUR20100CT, the SR20100PT offers balanced VF–R_θJC trade-off, AEC-Q101 qualification path, and guard ring ruggedness - making it optimal for new industrial and automotive power designs requiring reliability and efficiency.

Availability

SR20100PT is available at Aetrix Electronics and suitable for server power supplies, industrial DC/DC converters, and automotive infotainment systems requiring stable component supply, long lifecycle assurance, and traceable sourcing.

Supply support for SR20100PT 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.

The SR20xxPT series was designed specifically for high-current, high-reliability AC/DC and DC/DC power conversion in industrial, computing, and automotive environments - emphasizing thermal robustness, surge resilience, and regulatory compliance.

FAQ

What is the maximum junction temperature rating for SR20100PT?

The SR20100PT has a maximum junction temperature of +150°C, verified per its Absolute Maximum Ratings table. This rating applies under continuous forward conduction at rated current and allows operation in high-ambient environments such as enclosed server PSUs or under-hood automotive modules. Derating curves in the datasheet define allowable current reduction above +100°C case temperature. The SR20100PT must be mounted to a heatsink capable of maintaining T_J ≤ 150°C under worst-case load and ambient conditions.

Is SR20100PT pin-compatible with other parts in the SR20xxPT family?

Yes, all SR20xxPT devices - including SR2020PT through SR20150PT - share identical TO-247AD (TO-3P) mechanical outline, pin assignment, and terminal configuration. The SR20100PT uses the same anode-tab/cathode-lead/anode-lead pinout and mounting torque specification (1.13 N·m max). This enables direct voltage-rating substitution within the same PCB footprint without layout changes, provided thermal and electrical margins are re-verified for the new V_RRM.

Does SR20100PT have AEC-Q101 qualification?

The SR20100PT itself is not automatically AEC-Q101 qualified; however, the SR20100PTH variant - indicated by the "H" suffix in the ordering code - is explicitly qualified per AEC-Q101 Rev D for stress testing including HTGB, HTRB, and temperature cycling. Standard SR20100PT parts are intended for industrial/commercial use. For automotive applications, specify SR20100PTH and confirm qualification status via Taiwan Semiconductor's official product change notices or distributor documentation.

What is the forward voltage of SR20100PT at 20 A and 125°C?

The SR20100PT datasheet specifies forward voltage only at 10 A and 25°C (0.92 V typ). At 20 A and 125°C, VF is not directly published, but can be estimated using the typical forward characteristic curve (Fig.4) and derating trends: VF increases ~1.8 mV/°C and scales superlinearly with current. Based on curve extrapolation, VF ≈ 1.15–1.25 V under those conditions. For precise design, use the SPICE model or measure on representative units, as actual VF depends on thermal interface quality and mounting pressure.

How does the guard ring in SR20100PT improve reliability?

The guard ring in SR20100PT is a diffused p-type region surrounding the active Schottky junction, which controls electric field distribution at the silicon edge. This prevents premature avalanche breakdown during voltage transients - such as load dump or inductive kickback - thereby increasing the device's effective V_RRM margin and reducing failure rate in harsh environments. It directly contributes to the SR20100PT's ability to sustain 200 A surge current and meet UL recognition requirements without external snubbers.