Taiwan Semiconductor Corporation SF68G B0G

Overview

SF68G from Taiwan Semiconductor is a 600V, 6A super fast recovery rectifier diode in DO-201AD package, featuring 1.700 V forward voltage at 6 A and 35 ns reverse recovery time. It serves as a primary output rectifier in high-frequency switching power supplies, delivering low conduction loss and fast switching in DC–DC converters and inverters.

For engineers reviewing the SF68G datasheet, SF68G pinout, SF68G application, or SF68G equivalent, key selection criteria include its 600 V repetitive peak reverse voltage, 150 A surge rating, 150 °C maximum junction temperature, and AEC-Q101 qualification option (SF68GH), critical for automotive-grade power conversion designs.

Technical Context

This single-die silicon rectifier uses optimized epitaxial structure to achieve 35 ns reverse recovery time while sustaining 600 V blocking capability. Its low 1.700 V VF at 6 A and 5 µA IR at 25 °C support high-efficiency operation in hard-switched topologies.

Thermal performance is defined by 5 °C/W junction-to-lead resistance and 40 °C/W junction-to-ambient resistance under standard mounting conditions. The device operates across –55 °C to +150 °C junction temperature range and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements.

Key Specifications

Pinout & Package

DO-201AD axial-leaded package with cathode band marking; leads are pure tin plated per J-STD-002, compliant with RoHS and halogen-free (IEC 61249-2-21); weight ≈ 1.20 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH606S and MUR660E, SF68G delivers identical 35 ns recovery speed in the compact DO-201AD form factor while offering an AEC-Q101-qualified variant (SF68GH) - making it uniquely suitable for space-constrained, automotive-grade power conversion where both speed and qualification matter.

Availability

SF68G is available at Aetrix Electronics and suitable for automotive DC–DC converters, industrial motor drives, server PSUs, and renewable energy charge controllers requiring stable component supply and long-term lifecycle assurance.

Supply support for SF68G 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, specializing in power rectifiers, TVS devices, and MOSFETs for industrial and automotive markets.

The SF61G–SF68G series was developed to deliver AEC-Q101-capable, high-voltage super fast rectifiers with consistent VF and trr scaling across 50–600 V ratings, targeting next-generation high-efficiency power conversion in harsh environments.

FAQ

What is the maximum junction temperature rating for SF68G?

The SF68G has a maximum junction temperature (TJ MAX) of +150 °C, allowing reliable operation in high-ambient environments such as under-hood automotive locations or enclosed industrial power supplies. This rating is validated per JEDEC standards and applies across the full operating current range when thermal design respects RθJL = 5 °C/W. Derating begins above 25 °C ambient per the forward current derating curve in the SF68G datasheet.

Does SF68G have AEC-Q101 qualification?

The base SF68G is not AEC-Q101 qualified, but the variant SF68GH is fully AEC-Q101 qualified and shares identical electrical and thermal specifications. SF68GH undergoes stress testing including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing per AEC-Q101 Rev D. Both parts use the same DO-201AD package and marking format, with "H" suffix indicating qualification.

What is the reverse recovery time (trr) of SF68G and how is it measured?

The SF68G has a maximum reverse recovery time (trr) of 35 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per JEDEC standard test circuit. This value reflects the time required for minority carriers to clear after forward conduction, directly impacting switching loss and EMI in high-frequency converters. The 35 ns trr is confirmed across the full –55 °C to +125 °C junction temperature range.

How does the forward voltage (VF) of SF68G compare across its voltage-rated family?

Within the SF61G–SF68G family, VF increases with rated VRRM: SF61G–SF64G specify VF ≤ 0.975 V, SF65G–SF66G ≤ 1.300 V, and SF67G–SF68G ≤ 1.700 V, all at IF = 6 A and TJ = 25 °C. This progression reflects trade-offs in epitaxial layer design - higher-voltage grades require thicker, higher-resistivity layers, increasing conduction loss. SF68G's 1.700 V VF is typical for 600 V super fast rectifiers.

What packaging options are available for SF68G?

SF68G is supplied in DO-201AD package with two standard packing formats: 1,250 units per tape-and-reel (ordering code SF68G) and 500 units per ammo box (ordering code SF68G A0G). The AEC-Q101 qualified version SF68GH follows the same packaging options. All variants feature pure tin-plated leads compliant with J-STD-002 and meet RoHS and halogen-free requirements per IEC 61249-2-21.