Taiwan Semiconductor Corporation SRAF1030

Overview

SRAF1030 from Taiwan Semiconductor is a 10A, 30V AEC-Q101-qualified Schottky barrier rectifier in ITO-220AC package, featuring 0.55V forward voltage at 10A/25°C, 200A surge capability, 4°C/W junction-to-case thermal resistance, and guard ring over-voltage protection-used in automotive-grade DC-DC converters.

For engineers reviewing the SRAF1030 datasheet, SRAF1030 pinout, SRAF1030 application, or SRAF1030 equivalent, key selection criteria include repetitive peak reverse voltage (30V), TJ max rating (125°C), low VF for efficiency, UL recognition (E-326243), and ITO-220AC mechanical compatibility with heatsink mounting.

Technical Context

This single-die Schottky rectifier operates with a critical dv/dt rating of 10,000 V/µs and supports continuous forward current up to 10A at case temperatures ≤75°C per derating curve. Its 0.55V typical VF at 10A/25°C enables high-efficiency operation in high-frequency switching topologies.

The device integrates a guard ring structure for enhanced transient over-voltage robustness and meets JESD201 Class 2 whisker resistance. It is rated for storage from –55°C to +150°C and junction operation from –55°C to +125°C under rated load.

Key Specifications

Pinout & Package

ITO-220AC package: 3-terminal through-hole outline with isolated tab (cathode-connected), matte tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-10BQ030 and MBR1030CT, the SRAF1030 uniquely combines AEC-Q101 qualification, guard ring protection, and UL recognition in a single-diode ITO-220AC package-making it the preferred choice for automotive and safety-critical industrial rectification where reliability validation is mandatory.

Availability

SRAF1030 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS outputs, and LED driver constant-current loops requiring stable component supply and long-lifecycle support.

Supply support for SRAF1030 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.

The SRAF1030 belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability secondary-side rectification in automotive power modules and ruggedized industrial power supplies.

FAQ

What is the maximum junction temperature rating for the SRAF1030?

The SRAF1030 has a maximum junction temperature (TJ max) of +125°C under rated load conditions. This rating applies across its full operating range and defines the upper thermal limit for reliable long-term operation. Derating curves in the official datasheet specify allowable forward current reduction above 75°C case temperature. The SRAF1030 must not exceed this TJ max in any application, including transient overload conditions.

Is the SRAF1030 pin-compatible with other devices in the SRAF10xx family?

Yes-the SRAF1030 shares identical ITO-220AC package dimensions, pinout, and terminal configuration with all members of the SRAF1020–SRAF10150 series. Anode, cathode, and tab connections are functionally and physically identical across the family, enabling voltage-rating upgrades without PCB layout changes. However, thermal and electrical performance differences (e.g., VF, IR, TJ max) require verification per application.

Does the SRAF1030 have AEC-Q101 qualification?

Yes-the SRAF1030 is explicitly listed as AEC-Q101 qualified in Taiwan Semiconductor's official documentation (Version I2105). This qualification covers stress testing for temperature cycling, humidity bias, high-temperature operating life, and mechanical shock-validating suitability for automotive power electronics. The "H" suffix (e.g., SRAF1030H) denotes the AEC-Q101 version, but base SRAF1030 also carries this qualification per ordering code notes.

What is the forward voltage drop of the SRAF1030 at 10A and 100°C junction temperature?

The SRAF1030 exhibits a typical forward voltage (VF) of 0.55V at 10A and 25°C junction temperature. At 100°C, VF decreases slightly due to the negative temperature coefficient of Schottky diodes; measured data shows VF ≈ 0.49V under those conditions. This lower VF at elevated temperature improves conduction efficiency in thermally stressed operation, and the SRAF1030 maintains stable performance up to its 125°C TJ max limit.

How does the guard ring feature benefit the SRAF1030 in practical applications?

The guard ring in the SRAF1030 mitigates edge breakdown during fast voltage transients, significantly improving reliability in circuits with high dv/dt-such as flyback snubbers, LLC resonant converters, and motor drive freewheeling paths. In real-world use, this structure prevents premature failure during line surges or inductive kickback events. The SRAF1030's 10,000 V/µs critical dv/dt rating directly results from this guard ring implementation, distinguishing it from standard Schottky rectifiers lacking such protection.