Taiwan Semiconductor Corporation GBU1003H

Overview

GBU1003H from Taiwan Semiconductor is a 10A, 200V AEC-Q101-qualified standard bridge rectifier in GBU package, featuring 220A surge current capability, 1500VRMS dielectric strength, and <0.1μA typical reverse leakage at 25°C - used in automotive-grade AC/DC front-end stages of lighting drivers and SMPS.

For engineers reviewing the GBU1003H datasheet, GBU1003H pinout, GBU1003H application, or GBU1003H equivalent, key selection criteria include VRRM=200V, IFSM=220A, TJ(max)=150°C, RθJC=2°C/W, and AEC-Q101 qualification for under-hood power conversion designs.

Technical Context

This quad-diode bridge integrates four silicon junction diodes in a single-phase full-wave configuration with common-cathode/common-anode topology. It operates across -55°C to +150°C junction temperature range and supports repetitive peak reverse voltage up to 200V (VRRM) with 420V RMS reverse rating (VR(RMS)).

Thermal performance is defined by RθJA=21°C/W (free-air) and RθJC=2°C/W (case-to-junction), enabling high-power dissipation in compact PCB layouts. Reverse recovery behavior is not specified; device is optimized for 50/60Hz and low-frequency switching applications.

Key Specifications

Pinout & Package

Package: GBU - molded plastic body (UL 94V-0), matte tin-plated leads, 4.00g weight, polarity marked on top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU1003 and GBU10K, the GBU1003H uniquely delivers automotive-grade reliability at 200V rating - making it the only AEC-Q101-compliant option among functionally matched 10A GBU bridges for 120/230VAC input designs.

Availability

GBU1003H is available at Aetrix Electronics and suitable for automotive lighting, industrial AC/DC adapters, commercial lighting ballasts, and appliance power supplies requiring stable component supply and AEC-Q101 assurance.

Supply support for GBU1003H 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 for high-reliability, high-current AC/DC conversion in space-constrained PCBs - emphasizing thermal robustness, surge resilience, and regulatory compliance for automotive and industrial power systems.

FAQ

What is the peak repetitive reverse voltage rating of the GBU1003H?

The GBU1003H has a peak repetitive reverse voltage (VRRM) rating of 200 V. This value is fixed for the "03" variant in the GBU1001–GBU1007 family and defines the maximum AC voltage the device can block in each half-cycle. It corresponds to a 420 V RMS reverse voltage rating (VR(RMS)), making it suitable for 120 VAC and 230 VAC input applications with appropriate derating.

Is the GBU1003H pin-compatible with other GBU-series bridge rectifiers?

Yes, the GBU1003H shares identical GBU package dimensions, lead pitch, and 4-pin terminal layout (AC1, AC2, +, –) with all members of the GBU1001–GBU1007 family. Mechanical compatibility enables drop-in replacement across voltage variants, though electrical ratings (especially VRRM and VR(RMS)) must be verified for circuit safety and performance.

Does the GBU1003H require a heatsink in typical 10A operation?

The GBU1003H can operate without an external heatsink at ≤5A average current in free-air conditions, based on its RθJA=21°C/W. At full 10A load, junction temperature rise exceeds safe limits without thermal management; use of a heatsink (leveraging RθJC=2°C/W) or forced airflow is recommended to maintain TJ ≤150°C in sustained operation.

What does the "H" suffix signify in GBU1003H?

The "H" suffix in GBU1003H denotes AEC-Q101 qualification - confirming that the device has passed the full suite of stress tests defined by the Automotive Electronics Council for discrete semiconductors, including high-temperature operating life, temperature cycling, and humidity testing. This makes GBU1003H suitable for automotive power electronics where reliability under harsh conditions is mandatory.

How does the GBU1003H compare to standard GBU1003 in terms of thermal performance?

The GBU1003H and standard GBU1003 share identical thermal characteristics: RθJA=21°C/W and RθJC=2°C/W. The "H" suffix adds only AEC-Q101 qualification - no changes to thermal design, package construction, or electrical parameters. Thermal design guidance (heatsink sizing, PCB copper area, ambient limits) applies identically to both versions.