Taiwan Semiconductor Corporation SRAF8100

Overview

SRAF8100 from Taiwan Semiconductor is an AEC-Q101-qualified 8A, 100V Schottky barrier rectifier in ITO-220AC package, featuring 0.85V forward voltage at 8A/25°C, 150A surge current capability, and 5°C/W junction-to-case thermal resistance-used in high-efficiency DC-DC converters and automotive-grade power adapters.

For engineers reviewing the SRAF8100 datasheet, SRAF8100 pinout, SRAF8100 application, or SRAF8100 equivalent, key selection criteria include its 100V repetitive peak reverse voltage, low IR of 100µA at 25°C, 125–150°C max junction temperature range, guard ring over-voltage protection, and UL Recognized status (E-326243).

Technical Context

The SRAF8100 employs a single-die Schottky structure optimized for low conduction loss and fast switching in continuous forward-biased operation. Its 100V V_RRM, 150A I_FSM, and 10,000 V/µs dv/dt rating support robust performance in high-frequency SMPS topologies with transient-heavy loads.

Thermally, it delivers 5°C/W R_θJC into the heatsink via its ITO-220AC case, enabling stable 8A DC operation up to 125°C ambient when mounted with ≤0.56 N·m torque. The device operates across –55°C to +150°C storage and –55°C to +125°C/150°C junction ranges depending on grade.

Key Specifications

Pinout & Package

ITO-220AC package: isolated tab (cathode), two leads (anode and cathode), matte tin-plated terminals compliant with J-STD-002 solderability, 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-8EWH10FN-M3 and MUR8100CT, the SRAF8100 uniquely combines AEC-Q101 qualification, Schottky-level VF, and 100µA IR at 25°C in a single-diode ITO-220AC form factor-making it optimal for space-constrained, thermally demanding automotive and industrial rectification where qualification and efficiency are jointly mandated.

Availability

SRAF8100 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS front-ends, and consumer AC adapters requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.

Supply support for SRAF8100 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 power management and automotive electronics markets since 1979.

The SRAF8xxx series belongs to TSC's high-reliability Schottky rectifier product line, engineered specifically for high-efficiency, high-surge, and automotive-qualified power conversion applications demanding low VF, robust dv/dt immunity, and validated long-term reliability.

FAQ

What is the maximum junction temperature rating for the SRAF8100?

The SRAF8100 has a dual-rated maximum junction temperature: 125°C for standard-grade units and 150°C for high-temperature variants. This allows flexible thermal design-engineers may select derating curves based on application ambient conditions and heatsink capability. Both ratings are confirmed in the Absolute Maximum Ratings table of the official K2105 datasheet revision. Always verify the specific device marking and packaging code (e.g., SRAF8100H) to confirm the TJ max grade before final design-in.

Is the SRAF8100 pin-compatible with other devices in the SRAF8xx family?

Yes-the SRAF8100 shares identical ITO-220AC mechanical dimensions, terminal layout, and polarity marking with all SRAF820–SRAF8150 variants. All devices use the same anode/cathode lead configuration and isolated metal tab. However, electrical parameters-including V_RRM, V_F, and I_R-vary significantly across the family, so direct substitution requires validation of voltage stress, conduction loss, and leakage in the target circuit.

Does the SRAF8100 require a heatsink in 8A continuous operation?

Yes-continuous 8A operation at full load requires a heatsink. With R_θJC = 5°C/W and typical power dissipation of ~6.8W (0.85V × 8A), junction temperature rise above case exceeds 100°C even at modest ambient temperatures. Mounting the SRAF8100 to a properly sized heatsink using ≤0.56 N·m torque ensures safe operation within its 125°C or 150°C T_J limit. Thermal simulation or empirical testing under worst-case ambient and airflow conditions is recommended.

What does the "H" suffix mean in SRAF8100H?

The "H" suffix in SRAF8100H denotes AEC-Q101 qualification-confirming that the device has passed accelerated stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing per the AEC-Q101 standard. This makes SRAF8100H suitable for automotive powertrain, chassis, and body electronics applications. Standard SRAF8100 (no suffix) meets industrial specifications but lacks formal automotive qualification documentation.

How does the guard ring in the SRAF8100 improve reliability?

The guard ring in the SRAF8100 is a diffusion-based edge termination structure surrounding the active Schottky junction. It redistributes electric field lines away from the silicon periphery, suppressing premature avalanche breakdown during voltage transients. This directly improves the device's ability to withstand repetitive line surges and ESD events-especially critical in automotive 12V systems exposed to load dump and ISO 7637-2 pulses. Guard ring implementation is verified in TSC's process qualification reports for the SRAF8xxx series.