Taiwan Semiconductor Corporation SR510H

Overview

SR510H from Taiwan Semiconductor is an AEC-Q101-qualified 5A, 100V Schottky barrier rectifier in DO-201AD package, featuring 0.85V max forward voltage at 5A/25°C, 120A surge capability, and guard-ring overvoltage protection - deployed in automotive-grade DC-DC converters and industrial SMPS.

For engineers reviewing the SR510H datasheet, SR510H pinout, SR510H application, or SR510H equivalent, key selection criteria include its 100V V_RRM, 125°C/150°C junction temperature rating, AEC-Q101 qualification status, thermal resistance (R_θJA = 35°C/W), and cathode-band polarity marking for reliable high-efficiency rectification in space-constrained power stages.

Technical Context

This Schottky rectifier uses a single-die construction with guard-ring termination to suppress edge breakdown and sustain high dv/dt (10,000 V/µs) under transient conditions. Its low VF enables reduced conduction loss in high-frequency switching topologies where thermal management is critical.

Rated for continuous 5A average forward current and 120A non-repetitive surge (8.3ms half-sine), SR510H operates across –55°C to +150°C junction range and delivers <100 µA reverse leakage at rated 100V V_RRM and 25°C - meeting stringent automotive reliability requirements per AEC-Q101.

Key Specifications

Pinout & Package

DO-201AD axial-leaded package with cathode indicated by band-marked end; leads are pure tin-plated, J-STD-002 solderable, and meet JESD201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-50SQ100 and SB5100, SR510H uniquely combines AEC-Q101 qualification, DO-201AD form factor, and 0.85V V_F - making it the only option among the three qualified for under-hood automotive rectification without layout change or thermal redesign.

Availability

SR510H is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS, and USB-C PD adapters requiring stable component supply with full AEC-Q101 traceability and tape-and-reel delivery.

Supply support for SR510H 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 automotive, industrial, and consumer markets since 1979.

The SR502–SR520 series was designed specifically for high-reliability, high-efficiency rectification in automotive power systems and industrial switch-mode supplies - emphasizing AEC-Q101 compliance, low VF, and robust surge immunity.

FAQ

What is the maximum junction temperature rating for SR510H?

The SR510H has a maximum junction temperature (T_J) rating of +150°C, validated under AEC-Q101 stress testing. This allows operation in under-hood automotive environments where ambient temperatures exceed 105°C, provided thermal design maintains junction temperature below this limit. The SR510H datasheet specifies derating curves starting at 75°C case temperature, and the device is rated for storage from –55°C to +150°C.

Is SR510H pin-compatible with other parts in the SR502–SR520 family?

Yes, all SR502–SR520 devices share identical DO-201AD package dimensions, lead spacing, and cathode-band polarity marking - making SR510H mechanically and electrically interchangeable with SR502 through SR520 in the same footprint. However, voltage ratings (20V–200V) and forward voltage values differ across the family, so electrical substitution requires verification of V_RRM and V_F requirements in the target design.

Does SR510H require a heatsink for 5A continuous operation?

At 5A continuous current and 25°C ambient, SR510H dissipates approximately 4.25W (5A × 0.85V). With R_θJA = 35°C/W, junction temperature rise would be ~149°C - exceeding the 150°C limit. Therefore, a minimal heatsink or copper pour is required; derating to ≤3.5A is recommended for no-heatsink operation in still air. PCB layout with ≥1 in² 2-oz copper pad significantly improves thermal performance.

What does the "H" suffix in SR510H signify?

The "H" suffix in SR510H explicitly denotes AEC-Q101 qualification per the Taiwan Semiconductor ordering code table. It confirms that the specific SR510H lot has undergone full stress testing - including HTSL, TC, UHAST, and ESD - and meets automotive reliability standards for discrete semiconductors. Non-H variants (e.g., SR510) are functionally identical but lack this qualification and associated test documentation.

How does SR510H's reverse leakage compare to SR505/SR506 at 100V?

At 100V reverse voltage and 25°C, SR510H specifies maximum reverse current (I_R) of 100 µA - identical to SR509 and tighter than SR505/SR506 (500 µA). At 100°C, SR510H's I_R remains ≤5 mA, while SR505/SR506 are rated ≤10 mA. This lower leakage supports higher efficiency in standby modes and improved stability in precision feedback paths of regulated power supplies using SR510H.