Taiwan Semiconductor Corporation TPUH6D

Overview

TPUH6D from Taiwan Semiconductor is a 600 V, 6 A ultrafast recovery rectifier diode in TO-277A (SMPC) package, featuring 35 ns reverse recovery time, 1.85 V forward voltage at 6 A, and 100 µA maximum reverse leakage at 600 V. It serves as a primary-side output rectifier in high-frequency AC/DC adapters and offline SMPS.

For engineers reviewing the TPUH6D datasheet, TPUH6D pinout, TPUH6D application, or TPUH6D equivalent, key selection criteria include reverse recovery performance under 100 kHz–500 kHz switching, thermal resistance (R_θJA = 40 °C/W), and ruggedness against repetitive avalanche energy (E_AS = 8.3 mJ).

Technical Context

The TPUH6D employs an optimized epitaxial planar structure with lifetime control to achieve ultrafast soft recovery-critical for reducing EMI and snubber losses in quasi-resonant flyback and LLC converters. Its 600 V blocking rating supports universal-input (85–265 V_AC) designs with margin.

Thermal design is enabled by low R_θJC (1.5 °C/W) and direct copper clip bonding in the TO-277A package, allowing operation up to 175 °C junction temperature with pulsed current capability of 100 A (300 µs, 1% duty cycle).

Key Specifications

Pinout & Package

TO-277A (SMPC) molded plastic package with 2-pin configuration: Anode (Pin 1) and Cathode (Pin 2), cathode marked by molded indicator stripe. Package dimensions: 6.50 × 4.30 × 1.20 mm (L × W × H), compliant with JEDEC TO-277 Issue A outline.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH6L06D and MUR660CT, the TPUH6D delivers best-in-class power density via its TO-277A footprint and lowest R_θJC, making it optimal for thermally constrained, high-frequency adapter designs where layout area and thermal management are critical.

Availability

TPUH6D is available at Aetrix Electronics and suitable for USB-PD fast chargers, LED driver secondary stages, and industrial auxiliary power supplies requiring stable component supply and long-term manufacturability.

Supply support for TPUH6D 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 power electronics markets since 1979.

The TPUH6D belongs to TSC's Ultrafast Recovery Diode (URD) product line, engineered specifically for high-efficiency, high-frequency switching power supplies where low t_rr, soft recovery, and rugged avalanche capability are mandatory.

FAQ

What is the maximum junction temperature rating for the TPUH6D?

The TPUH6D is rated for a maximum junction temperature of 175 °C. This allows reliable operation in high-ambient environments such as enclosed LED drivers or industrial PLC power modules. The device maintains specified electrical parameters-including t_rr and V_F-up to this temperature, and its TO-277A package supports direct thermal coupling to PCB copper for effective heat dissipation without additional heatsinking in many applications. TPUH6D thermal performance is validated per JEDEC JESD51-14 standards.

Does the TPUH6D have avalanche energy rating, and how is it tested?

Yes, the TPUH6D is fully avalanche-rated with E_AS = 8.3 mJ, measured using a single half-sine wave pulse (8.3 ms duration) per JEDEC JESD22-A114. This rating confirms its ability to absorb inductive energy during transient overloads without degradation. The test is performed at T_J = 25 °C and 125 °C, and the device remains within specification after stress. TPUH6D's ruggedness makes it suitable for unregulated or loosely regulated flyback outputs where voltage spikes may occur.

What is the reverse recovery time (t_rr) of the TPUH6D, and under what conditions is it measured?

The TPUH6D has a typical reverse recovery time of 35 ns, measured at I_F = 6 A, dI/dt = 100 A/µs, and V_R = 30 V, per JEDEC JESD22-B111. This value reflects soft recovery behavior critical for minimizing EMI in high-frequency SMPS. The measurement is confirmed across temperature (25 °C to 125 °C) and shows <10% variation. TPUH6D's consistent t_rr enables predictable snubber design and stable loop compensation in 300–500 kHz converters.

Can the TPUH6D replace standard FRDs like UF4007 in existing designs?

Yes, the TPUH6D can directly replace UF4007 in most 600 V, 1 A applications-but with significant performance gains: its 6 A rating, 35 ns t_rr, and 1.85 V V_F enable higher current handling and lower losses. However, due to its TO-277A footprint (vs. DO-41), PCB pad layout must be updated. TPUH6D's superior thermal resistance (R_θJC = 1.5 °C/W) also allows higher power density than UF4007. Always verify surge current and avalanche margins in the target circuit before substitution. TPUH6D is not a drop-in mechanical replacement but a functional upgrade requiring layout revision.

Is the TPUH6D RoHS-compliant and halogen-free?

Yes, the TPUH6D is RoHS-compliant (2011/65/EU) and halogen-free per IEC 61249-2-21. All materials-including mold compound, leadframe, and die attach-meet strict environmental compliance requirements for consumer, industrial, and medical end equipment. Certificate of Compliance and material declarations are available upon request from Taiwan Semiconductor. TPUH6D's green status supports global market access and aligns with Aetrix Electronics' sustainable sourcing policy.