Taiwan Semiconductor Corporation GBU1004H

Overview

GBU1004H from Taiwan Semiconductor is a 10A, 400V repetitive peak reverse voltage (VRRM) AEC-Q101 qualified standard bridge rectifier in GBU package, featuring 220A surge current capability, 1.1V max forward voltage at 10A, and <5µA reverse current at 25°C - used in automotive-grade AC/DC front-ends for lighting and adapters.

For engineers reviewing the GBU1004H datasheet, GBU1004H pinout, GBU1004H application, or GBU1004H equivalent, key selection criteria include VRRM=400V, IFSM=220A, TJ(max)=150°C, RθJC=2°C/W, and AEC-Q101 qualification status for harsh-environment reliability validation.

Technical Context

The GBU1004H integrates four silicon diodes in a single-phase full-wave bridge configuration with common-cathode/common-anode topology. Its 400V VRRM rating targets mid-voltage SMPS inputs, while the 220A IFSM supports high-energy transient suppression during cold-start or line surges.

Thermally optimized with RθJC = 2°C/W and RθJA = 21°C/W, the device sustains 10A continuous forward current at case temperatures up to 85°C. Junction capacitance is 211pF per diode at 1MHz/4V, influencing EMI filter design in high-frequency switching applications.

Key Specifications

Pinout & Package

Package: GBU - molded plastic case with matte tin-plated leads, UL 94V-0 rated, 4.0g weight, polarity marked on body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU1004 and GBU10K, the GBU1004H uniquely combines AEC-Q101 qualification, GBU surface-mountable package, and 2°C/W thermal resistance - making it the sole option for space-constrained, automotive-qualified, high-reliability bridge rectification.

Availability

GBU1004H is available at Aetrix Electronics and suitable for automotive lighting, industrial AC/DC adapters, commercial ballasts, and consumer wall-mount power supplies requiring stable component supply across multi-year production cycles.

Supply support for GBU1004H 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 developed to deliver high-surge, AEC-Q101 qualified bridge rectifiers in compact GBU packages for next-generation automotive lighting and high-efficiency AC/DC conversion systems.

FAQ

What does the 'H' suffix mean in GBU1004H?

The 'H' suffix in GBU1004H indicates full AEC-Q101 qualification - verified through temperature cycling, high-temperature reverse bias, and mechanical shock testing per automotive reliability standards. Unlike the standard GBU1004, the GBU1004H is certified for use in automotive power electronics where extended temperature operation and long-term reliability are mandatory.

What is the maximum continuous forward current for GBU1004H at 100°C case temperature?

At 100°C case temperature, the GBU1004H supports approximately 7.5A continuous forward current, derived from its forward current derating curve. The device's 10A rating applies at TC ≤ 55°C; above that, linear derating begins until zero current at 150°C junction temperature - always referenced to measured case temperature, not ambient.

Is GBU1004H pin-compatible with other GBU-series rectifiers like GBU1006H?

Yes, all GBU-series rectifiers including GBU1004H and GBU1006H share identical GBU package dimensions, lead spacing, and 4-pin pinout (AC1, AC2, +, –). However, VRRM differs (400V vs. 800V), so substitution requires verification of reverse voltage margin in the target circuit - GBU1004H is not electrically interchangeable with higher-voltage variants without redesign.

Does GBU1004H require a heatsink in a 10A, 50°C ambient application?

In a 50°C ambient environment with natural convection, GBU1004H typically requires a heatsink to sustain 10A continuous current - because its RθJA is 21°C/W, resulting in ~720°C junction rise (10² × 21) exceeding the 150°C limit. With a properly sized heatsink achieving RθCA ≤ 5°C/W, junction temperature remains within spec; PCB copper area alone is insufficient for full-load operation.

What is the reverse recovery time (trr) specification for GBU1004H?

The GBU1004H is a standard recovery bridge rectifier and does not specify reverse recovery time (trr) in its datasheet. It is not optimized for high-frequency switching; typical trr exceeds 2.5µs. For applications above 20kHz, fast-recovery alternatives like GBU1004F (if available) or discrete ultrafast diodes should be evaluated instead of relying on GBU1004H.