Taiwan Semiconductor Corporation SFAF806GH

Overview

SFAF806GH from Taiwan Semiconductor is an AEC-Q101-qualified super fast rectifier diode in ITO-220AC package, rated for 400 V repetitive peak reverse voltage (V_RRM), 8 A average forward current (I_F), and 125 A non-repetitive surge current (I_FSM). It delivers low forward voltage drop (1.30 V at 8 A, 25°C) and ultra-fast recovery (35 ns), optimized for high-efficiency DC/DC converters and switching inverters in automotive power systems.

For engineers reviewing the SFAF806GH datasheet, SFAF806GH pinout, SFAF806GH application, or SFAF806GH equivalent, key selection criteria include its AEC-Q101 qualification, 400 V V_RRM, 1.30 V V_F @ 8 A, 35 ns t_rr, and ITO-220AC thermal performance (R_θJC = 4°C/W) in freewheeling and SMPS designs.

Technical Context

The SFAF806GH employs a glass-passivated single-die silicon junction with optimized carrier lifetime control to achieve super-fast reverse recovery (t_rr ≤ 35 ns) while maintaining low forward conduction loss. Its 400 V V_RRM and 125 A I_FSM support robust operation under transient overloads in 12 V–48 V automotive bus-derived power stages.

Thermally, the ITO-220AC package provides direct case-to-heatsink thermal path (R_θJC = 4°C/W), enabling sustained 8 A conduction at T_J ≤ 150°C when mounted with ≤0.56 N·m torque. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements.

Key Specifications

Pinout & Package

Package: ITO-220AC - Insulated TO-220 variant with isolated metal tab, matte tin-plated leads, UL 94V-0 molding compound, and polarity marking on device body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH8R04DJF and VS-8EWH04FN-M3/45, the SFAF806GH offers balanced performance with verified AEC-Q101 compliance, competitive V_F and t_rr, and cost-effective ITO-220AC packaging-making it optimal for volume automotive and industrial SMPS where qualification and thermal reliability are primary drivers.

Availability

SFAF806GH is available at Aetrix Electronics and suitable for automotive DC/DC converters, on-board charger auxiliary supplies, and industrial SMPS requiring stable component supply with AEC-Q101 qualification and consistent thermal performance.

Supply support for SFAF806GH 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 SFAF806GH belongs to TSC's AEC-Q101-qualified super fast rectifier family, engineered specifically for high-reliability power conversion in automotive under-hood and industrial environments where thermal stability, surge robustness, and long-term parametric consistency are critical.

FAQ

What is the maximum junction temperature rating for the SFAF806GH?

The SFAF806GH has a maximum junction temperature (T_J) of +150°C, validated per AEC-Q101 stress testing requirements. This rating allows continuous operation in high-ambient environments such as automotive engine compartments when properly heatsinked. Derating curves confirm 8 A I_F is sustainable up to 125°C case temperature. Thermal design must respect R_θJC = 4°C/W and mounting torque ≤0.56 N·m to maintain this limit.

Is the SFAF806GH pin-compatible with other devices in the SFAF80xG series?

Yes, all SFAF80xG and SFAF80xGH devices share identical ITO-220AC packaging, pinout, and mechanical footprint-including SFAF806GH. Anode (Lead 1), cathode (Lead 2), and isolated metal tab are functionally and physically consistent across the series. Voltage ratings differ (50–600 V), so electrical substitution requires verification of V_RRM and V_F requirements in the target design.

Does the SFAF806GH meet halogen-free and RoHS requirements?

Yes, the SFAF806GH complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm. Certificate of Compliance is available upon request from Taiwan Semiconductor and authorized distributors.

What is the reverse recovery time (t_rr) specification for the SFAF806GH?

The SFAF806GH has a maximum reverse recovery time (t_rr) of 35 ns, measured at I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A, and T_J = 25°C. This ultra-fast recovery enables high-frequency switching (>100 kHz) with minimal switching loss and reduced EMI generation. Performance remains stable across the full -55°C to +150°C operating range.

How does the "H" suffix in SFAF806GH affect its qualification and use?

The "H" suffix in SFAF806GH explicitly denotes AEC-Q101 qualification-verified through accelerated stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated temperature-humidity stress (HAST). This distinguishes it from non-H variants (e.g., SFAF806G), which lack automotive-grade reliability validation and are intended for commercial/industrial use only.