Taiwan Semiconductor Corporation SF2L8GH

Overview

SF2L8GH from Taiwan Semiconductor is a 2 A, 600 V super fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 1.70 V max forward voltage at 2 A and 35 ns reverse recovery time, designed for high-efficiency DC-DC converters and switching-mode power supplies in automotive-grade applications.

For engineers reviewing the SF2L8GH datasheet, SF2L8GH pinout, SF2L8GH application, or SF2L8GH equivalent, key selection criteria include its AEC-Q101 qualification, 600 V repetitive peak reverse voltage, 50 A surge capability, low junction-to-lead thermal resistance (17 °C/W), and halogen-free, RoHS-compliant construction.

Technical Context

This device is a single-die, glass-passivated silicon rectifier optimized for high-speed switching with minimal reverse recovery charge. Its 35 ns trr and 1.70 V VF at 2 A enable reduced conduction and switching losses in high-frequency topologies.

The SF2L8GH operates across –55 °C to +150 °C junction temperature range and delivers 50 A non-repetitive surge current (8.3 ms half-sine), supported by 17 °C/W junction-to-lead thermal resistance for reliable thermal management in compact layouts.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial lead, glass-passivated die, cathode indicated by band. Weight: 0.400 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R06 and ES2D, the SF2L8GH uniquely combines AEC-Q101 qualification, 600 V blocking, 35 ns trr, and 1.70 V VF - making it the only option among the three suitable for automotive 48 V DC-DC converters requiring both reliability and high-frequency efficiency.

Availability

SF2L8GH is available at Aetrix Electronics and suitable for automotive power conversion, industrial UPS systems, and renewable energy charge controllers requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for SF2L8GH 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 computing markets since 1979.

The SF2L8GH belongs to TSC's AEC-Q101-qualified Super Fast Rectifier family, engineered specifically for high-reliability, high-frequency power conversion in automotive and industrial environments where thermal robustness and surge immunity are critical.

FAQ

What is the maximum junction temperature rating for SF2L8GH?

The SF2L8GH has a maximum junction temperature (TJ MAX) of +150 °C, verified per JEDEC standards. This rating allows operation in under-hood automotive environments and high-ambient industrial settings. Derating curves in the official datasheet define safe current limits above 75 °C ambient, and the 17 °C/W RθJL enables effective thermal coupling to PCB copper. The SF2L8GH must be mounted with adequate copper area to maintain TJ ≤ 150 °C under full 2 A load.

Is SF2L8GH pin-compatible with SF2L6GH or SF2L4GH?

Yes, the SF2L8GH shares identical DO-204AC (DO-15) package dimensions, lead spacing, and axial pinout with SF2L6GH and SF2L4GH - all feature anode and cathode leads with cathode band marking. However, voltage ratings differ: SF2L4GH is rated for 200 V, SF2L6GH for 400 V, and SF2L8GH for 600 V. Substitution requires verification that the higher VRRM does not adversely affect layout parasitics or snubber design.

Does SF2L8GH require a heatsink in typical 2 A operation?

No, the SF2L8GH does not require an external heatsink under typical 2 A continuous operation at ≤75 °C ambient, thanks to its 17 °C/W junction-to-lead thermal resistance and DO-15 package's ability to transfer heat directly to PCB copper. A minimum 100 mm² 2-oz copper pad per lead is recommended. Thermal simulation or measurement is advised if operating above 75 °C ambient or at >80% duty cycle with high ripple current.

What does the "H" suffix in SF2L8GH signify?

Per Taiwan Semiconductor's ordering guide, the "H" suffix in SF2L8GH explicitly denotes AEC-Q101 qualification - confirming the device has passed stress tests for automotive-grade reliability, including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. This distinguishes SF2L8GH from the non-H variant (SF2L8G), which is rated for industrial use only and lacks automotive qualification documentation.

How does SF2L8GH's reverse recovery time compare to standard fast rectifiers?

The SF2L8GH achieves 35 ns reverse recovery time (trr), significantly faster than standard fast rectifiers (typically 100–200 ns). This enables higher switching frequencies (up to 500 kHz) with lower switching loss and reduced EMI generation. In contrast, devices like UF4007 (100 ns trr) would incur ~3× higher switching loss at the same frequency and current. The SF2L8GH's trr is measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A.