Taiwan Semiconductor Corporation SR515H

Overview

SR515H from Taiwan Semiconductor is an AEC-Q101-qualified 5A, 150V Schottky barrier rectifier in DO-201AD package, featuring 1.05V max forward voltage at 5A/25°C, 100µA max reverse leakage at 150V/25°C, and 120A surge capability - deployed in automotive-grade DC-DC converters and industrial SMPS.

For engineers reviewing the SR515H datasheet, SR515H pinout, SR515H application, or SR515H equivalent, key selection criteria include its AEC-Q101 qualification, 150V V_RRM, thermal resistance (R_θJA = 35°C/W), cathode-band polarity marking, and DO-201AD mechanical compatibility with high-reliability power conversion designs.

Technical Context

This Schottky rectifier uses a single-die construction optimized for low-loss unidirectional conduction in high-frequency switching topologies. Its guard ring structure enhances overvoltage robustness, while pure tin-plated leads ensure J-STD-002 solderability and JESD201 Class 2 whisker resistance.

Rated for continuous operation up to +150°C junction temperature, SR515H delivers stable performance under transient surge conditions (8.3ms half-sine, 120A) and maintains low reverse leakage (<1mA at 150V/125°C), supporting reliable operation in thermally constrained automotive and industrial environments.

Key Specifications

Pinout & Package

DO-201AD axial-leaded package with cathode indicated by a band; leads are pure tin-plated, compliant with J-STD-002 solderability and JESD201 Class 2 whisker requirements. Weight: ~1.10g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-50SQ150 and SB5150, SR515H uniquely combines AEC-Q101 qualification, +150°C operation, and 1.05V V_F in the through-hole DO-201AD form factor - making it the only drop-in solution for automotive-grade 150V rectification requiring legacy leaded assembly and extended thermal margin.

Availability

SR515H is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS, and telecom power supplies requiring stable component supply with long-term lifecycle assurance and AEC-Q101 traceability.

Supply support for SR515H 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 global automotive, industrial, and consumer markets since 1979.

SR515H belongs to TSC's SR5xx AEC-Q101 Schottky rectifier family, engineered specifically for high-reliability power conversion in harsh-environment applications including engine control, lighting, and power distribution systems.

FAQ

What is the peak repetitive reverse voltage rating for SR515H?

The SR515H has a peak repetitive reverse voltage (V_RRM) rating of 150 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version J2105). It defines the maximum reverse-biased voltage the device can block continuously without breakdown, and is critical for selecting appropriate input/output isolation margins in 48V and 60V system designs. The SR515H must not be operated beyond this rating under any steady-state or transient condition.

Is SR515H qualified to AEC-Q101 standards?

Yes, SR515H is explicitly AEC-Q101 qualified, as indicated by the "H" suffix in its ordering code and confirmed in the FEATURES section of the Taiwan Semiconductor datasheet. This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress test (HAST), validating its suitability for automotive power electronics such as body control modules and ADAS subsystems.

What is the maximum forward voltage of SR515H at rated current?

The maximum forward voltage (V_F) of SR515H is 1.05 V at 5 A forward current and 25°C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to minimize self-heating. At elevated temperatures (e.g., 125°C), V_F decreases slightly due to the negative temperature coefficient of Schottky diodes, but conduction loss remains predictable for thermal modeling of the SR515H in real-world applications.

Does SR515H have a specified reverse leakage current?

Yes, SR515H specifies reverse leakage current (I_R) as ≤100 µA at 150 V reverse voltage and 25°C junction temperature. At 125°C, I_R rises to ≤1 mA. These values are documented in the Electrical Specifications table and directly impact standby power consumption in always-on automotive modules - making them essential for low-quiescent-current design validation using the SR515H.

What package type does SR515H use, and how is polarity marked?

SR515H uses the DO-201AD axial-leaded package with cathode polarity indicated by a visible band on the body. The leads are pure tin-plated and meet J-STD-002 solderability requirements. Mechanical dimensions, weight (~1.10 g), and UL 94V-0 flammability rating are specified in the Mechanical Data section of the Taiwan Semiconductor datasheet, confirming compatibility with standard through-hole assembly processes and safety-compliant enclosures.