Taiwan Semiconductor Corporation SF35GH

Overview

SF35GH from Taiwan Semiconductor is a 3A, 300V repetitive peak reverse voltage (VRRM) AEC-Q101-qualified super fast rectifier in DO-201AD package, featuring 35ns reverse recovery time (trr), 1.30V max forward voltage at 3A/25°C, and 125A surge current capability - used in automotive-grade DC-DC converters and switching inverters.

For engineers reviewing the SF35GH datasheet, SF35GH pinout, SF35GH application, or SF35GH equivalent, key selection criteria include VRRM=300V, trr=35ns, VF≤1.30V @3A, AEC-Q101 qualification, and DO-201AD thermal performance (RθJL=10°C/W).

Technical Context

This super fast rectifier employs a single-die silicon PN junction optimized for high-frequency switching applications. Its 35ns reverse recovery time enables efficient operation in SMPS topologies above 100kHz, while the 300V VRRM rating supports 24V–48V industrial and automotive bus-derived power stages.

The device operates across –55°C to +150°C junction temperature range with 125A non-repetitive surge rating (8.3ms half-sine), and achieves low conduction loss via low VF (1.30V max) and low junction-to-lead thermal resistance (10°C/W), critical for thermally constrained PCB layouts.

Key Specifications

Pinout & Package

Package: DO-201AD - axial-leaded, molded plastic case with cathode band marking; UL 94V-0 rated compound; pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH3L03S and MUR330, SF35GH uniquely combines AEC-Q101 qualification, DO-201AD through-hole compatibility, and 1.30V VF in a 300V/3A super fast rectifier - making it optimal for space-constrained automotive and industrial power supplies requiring zero-layout change upgrades.

Availability

SF35GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switch-mode inverters, and renewable energy charge controllers requiring stable component supply with long-term lifecycle assurance.

Supply support for SF35GH 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 SF3xG series was designed specifically for high-reliability, high-frequency power conversion - targeting AEC-Q101-compliant rectification in next-generation 12V–48V automotive systems and compact industrial SMPS.

FAQ

What is the peak repetitive reverse voltage (VRRM) rating for SF35GH?

The SF35GH has a VRRM rating of 300 V, meaning it can reliably block up to 300 volts of reverse voltage in repetitive operation. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version H2105), and aligns with the "35" in the part number indicating the 300V grade within the SF3xG family. The SF35GH is therefore suited for 48V automotive and industrial bus applications where a 2× safety margin is required.

Is SF35GH qualified for automotive applications?

Yes, SF35GH is AEC-Q101 qualified, as explicitly stated in the FEATURES section and ORDERING INFORMATION (the "H" suffix denotes AEC-Q101 qualification). This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - confirming suitability for under-hood and ADAS power modules where reliability under thermal and vibration stress is critical. The SF35GH datasheet version H2105 documents full compliance.

What is the forward voltage (VF) of SF35GH at rated current?

The SF35GH has a maximum forward voltage of 1.30 V at 3 A and 25°C junction temperature, as specified in the ELECTRICAL SPECIFICATIONS table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents worst-case conduction loss. At elevated temperatures (e.g., 125°C), VF decreases slightly, but system design should use the 1.30 V max value for worst-case power loss calculation (3.9 W at full load).

What package type does SF35GH use, and what are its mechanical highlights?

SF35GH uses the DO-201AD package - an axial-leaded, molded plastic case with cathode band polarity marking. Key mechanical attributes include UL 94V-0 flammability rating, pure tin-plated leads compliant with J-STD-002 solderability, JESD201 Class 2 whisker resistance, and a typical weight of 1.10 g. Its RθJL of 10°C/W enables effective thermal transfer to PCB copper when leads are soldered to thermal pads.

How does SF35GH compare to SF34GH and SF36GH in terms of voltage rating and VF?

SF35GH is rated for 300 V VRRM, positioned between SF34GH (200 V) and SF36GH (400 V) in the SF3xG family. Its VF is 1.30 V max (at 3A/25°C), matching SF36GH but higher than SF34GH's 1.05 V max - reflecting the trade-off between higher blocking voltage and increased forward conduction loss. All three share identical DO-201AD packaging, 35 ns trr, and AEC-Q101 qualification, enabling voltage-scaling flexibility within the same layout.