Taiwan Semiconductor Corporation GBU601H

Overview

GBU601H from Taiwan Semiconductor is a 6A, 50V AEC-Q101 qualified standard bridge rectifier in GBU package, featuring 175A surge current capability, 1.1V max forward voltage at 6A, and 1500VRMS dielectric strength - used in automotive-grade AC/DC front-ends and industrial SMPS.

For engineers reviewing the GBU601H datasheet, GBU601H pinout, GBU601H application, or GBU601H equivalent, key selection criteria include peak reverse voltage (50V), junction-to-case thermal resistance (2°C/W), AEC-Q101 qualification status, and matte tin-plated solderable leads per J-STD-002.

Technical Context

The GBU601H integrates four silicon diodes in a single-phase full-wave bridge configuration with common-cathode/common-anode topology. Its quad-diode layout enables direct AC input rectification without external interconnects, supporting high-reliability operation up to 150°C junction temperature.

Thermal performance is defined by R_θJC = 2°C/W and R_θJA = 21°C/W, enabling sustained 6A average forward current under forced-air or PCB copper thermal management. Reverse leakage remains ≤5µA at 25°C and ≤500µA at 125°C under rated V_RRM.

Key Specifications

Pinout & Package

Package: GBU - molded plastic case with matte tin-plated leads, UL 94V-0 rated, 4.00g weight, 0.56 N·m max mounting torque.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU601 and GBU6K, the GBU601H uniquely combines AEC-Q101 qualification, GBU surface-mount compatibility, and verified 150°C operation - making it the sole option for automotive front-end rectification where both reliability and compact packaging are mandatory.

Availability

GBU601H is available at Aetrix Electronics and suitable for automotive onboard chargers, industrial LED drivers, and consumer AC/DC adapters requiring stable component supply across multi-year production cycles.

Supply support for GBU601H 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 automotive, industrial, and consumer markets since 1979.

The GBU series was designed specifically for high-reliability AC/DC conversion in space-constrained, thermally demanding applications - emphasizing robust surge handling, low leakage, and automotive-grade process validation.

FAQ

What is the peak repetitive reverse voltage rating for GBU601H?

The GBU601H has a peak repetitive reverse voltage (V_RRM) rating of 50 V. This value defines the maximum sinusoidal reverse voltage the device can block repeatedly without avalanche breakdown. It is measured under standard test conditions (T_A = 25°C) and applies to each internal diode in the bridge configuration. The GBU601H is part of the GBU601–GBU607 family, where "601" denotes the 50V rating.

Does GBU601H meet automotive qualification standards?

Yes, GBU601H is AEC-Q101 qualified, as confirmed by Taiwan Semiconductor's documentation and ordering code suffix "H". This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - validating suitability for automotive power electronics such as onboard chargers and body control modules. GBU601 (without "H") lacks this qualification.

What is the forward voltage drop of GBU601H at full rated current?

At 6 A forward current and 25°C junction temperature, the GBU601H exhibits a maximum forward voltage drop (V_F) of 1.1 V per diode. Since the bridge conducts through two diodes in series during each half-cycle, total conduction loss is approximately 2.2 V × 6 A = 13.2 W at full load - a critical parameter for thermal design and efficiency calculation in SMPS applications.

How does the thermal resistance of GBU601H impact heatsink selection?

The GBU601H has a junction-to-case thermal resistance (R_θJC) of 2°C/W. When dissipating 10 W, this results in a 20°C temperature rise from junction to case. Effective heatsinking requires minimizing case-to-ambient resistance (R_θCA) to keep T_J ≤150°C. For example, with 75°C ambient and 10 W loss, R_θCA must be ≤7.5°C/W - achievable with a small finned aluminum heatsink or direct PCB copper pour.

Is GBU601H lead-free and RoHS compliant?

Yes, GBU601H is RoHS compliant and halogen-free per IEC 61249-2-21. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the molding compound complies with UL 94V-0 flammability rating. These attributes support compliance with EU RoHS Directive 2011/65/EU and automotive ELV requirements.