Taiwan Semiconductor Corporation SF1608PTH

Overview

SF1608PTH from Taiwan Semiconductor is a dual-die, positive-center-tap superfast rectifier in TO-247AD package, rated for 16 A average forward current, 600 V repetitive peak reverse voltage (V_RRM), and 35 ns reverse recovery time (t_rr). It delivers low forward voltage (1.70 V at 8 A, 25°C), low thermal resistance (2 °C/W), and AEC-Q101 qualification-designed for high-efficiency freewheeling and snubber circuits in automotive-grade DC-DC converters.

For engineers reviewing the SF1608PTH datasheet, SF1608PTH pinout, SF1608PTH application, or SF1608PTH equivalent, key selection considerations include its 600 V V_RRM, center-tap dual-diode configuration, AEC-Q101 qualification, TO-247AD mechanical compatibility, and verified 35 ns t_rr performance under IF = 0.5 A / IR = 1.0 A test conditions.

Technical Context

The SF1608PTH integrates two identical silicon die in a single TO-247AD package with shared cathode and isolated anodes forming a positive-center-tap topology. Its superfast recovery (t_rr ≤ 35 ns) enables operation in high-frequency switching topologies up to several hundred kHz without excessive switching loss.

Designed for automotive reliability, it features glass-passivated junctions, matte tin-plated leads compliant with J-STD-002, JESD201 Class 2 whisker resistance, and UL 94V-0 molding compound-supporting robust thermal management via low R_θJC of 2 °C/W and 150 °C maximum junction temperature.

Key Specifications

Pinout & Package

TO-247AD (TO-3P) package with three terminals: Anode 1 (A1), Anode 2 (A2), and common Cathode (K). Mounting hole centered on tab; tab is electrically connected to cathode. Matte tin-plated leads, UL Recognized File # E-326243, RoHS and halogen-free compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar superfast dual-center-tap rectifier applications.

Compared with STTH1606D and IXYS MUR1660CT, the SF1608PTH uniquely combines AEC-Q101 qualification, monolithic center-tap integration, and 35 ns t_rr in a single TO-247AD package-reducing BOM count, improving thermal coupling, and enabling automotive-grade reliability without layout compromise.

Availability

SF1608PTH is available at Aetrix Electronics and suitable for automotive onboard chargers, industrial DC-DC converters, and high-voltage LED driver snubbers requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for SF1608PTH 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 power semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and computing markets since 1979.

The SF1601PT–SF1608PT family was developed to deliver AEC-Q101-qualified, high-voltage superfast rectifiers with monolithic dual-die center-tap architecture for next-generation EV power electronics and high-density power conversion.

FAQ

What is the maximum junction temperature rating for SF1608PTH?

The SF1608PTH has a maximum junction temperature (T_J) of +150°C, validated across its full operating range from –55°C to +150°C. This rating is supported by its 2 °C/W junction-to-case thermal resistance and glass-passivated die construction, enabling reliable operation in automotive under-hood environments and sealed industrial enclosures where ambient temperatures exceed 105°C. The SF1608PTH maintains full electrical specifications up to this limit.

Is SF1608PTH pin-compatible with other parts in the SF160xPT series?

Yes, all SF160xPT and SF160xPTH variants-including SF1608PTH-share identical TO-247AD (TO-3P) package dimensions, pinout (A1/A2/K), and mechanical mounting interface. Voltage ratings differ only in internal die design (50 V to 600 V), so SF1608PTH can be substituted on the same footprint when higher V_RRM is required-but thermal and electrical validation must confirm suitability for the target circuit's surge and conduction demands.

Does SF1608PTH meet automotive qualification standards?

Yes, the "H" suffix in SF1608PTH explicitly denotes AEC-Q101 qualification per Version G2103 of the datasheet. This includes stress testing for temperature cycling, high-temperature operating life, unbiased highly accelerated stress testing (uHAST), and mechanical shock-all performed on the final packaged device. The SF1608PTH is approved for use in automotive powertrain and charging systems where functional safety and long-term reliability are mandatory.

What is the reverse recovery time (t_rr) test condition for SF1608PTH?

The SF1608PTH reverse recovery time is measured at t_rr ≤ 35 ns under the standardized condition: forward current I_F = 0.5 A, reverse current I_R = 1.0 A, and reverse recovery current I_RR = 0.25 A, per JEDEC JESD24-11. This test reflects real-world behavior in hard-switched converters and confirms minimal stored charge (Q_rr)-critical for minimizing EMI and switching loss in high-frequency DC-DC designs using the SF1608PTH.

How does the center-tap configuration of SF1608PTH simplify PCB layout?

The SF1608PTH integrates two matched diodes with a common cathode (K) and isolated anodes (A1, A2), forming a monolithic positive-center-tap structure. This eliminates the need for two separate TO-247 devices, matching trace lengths, thermal vias, and current-sharing resistors-reducing layout area by ~40%, improving thermal symmetry, and removing inter-device timing skew. For full-wave rectifier designs, the SF1608PTH enables single-component placement with symmetric thermal coupling to one heatsink.