Taiwan Semiconductor Corporation GBU1002

Overview

GBU1002 from Taiwan Semiconductor is a 10A, 100V standard bridge rectifier in GBU package, featuring 220A surge current capability, 1500VRMS dielectric strength, and AEC-Q101 qualification option (GBU1002H). It serves as AC-to-DC conversion front-end in compact power adapters and industrial SMPS.

For engineers reviewing the GBU1002 datasheet, GBU1002 pinout, GBU1002 application, or GBU1002 equivalent, key selection factors include its 100V repetitive peak reverse voltage, 1.1V max forward voltage at 10A, 5µA max reverse leakage at 25°C, thermal resistance of 21°C/W (junction-to-ambient), and GBU package mechanical compatibility with PCB-mount designs.

Technical Context

The GBU1002 integrates four silicon diodes in a single-phase full-wave bridge configuration with quad-terminal layout (AC1, AC2, +, –). Its junction-to-case thermal resistance is 2°C/W, enabling efficient heat transfer to heatsink or PCB copper when mounted with thermal pad.

Rated for continuous 10A average forward current and 220A non-repetitive surge (8.3ms half-sine), it supports high-reliability operation across –55°C to +150°C junction temperature range and meets UL 94V-0 flammability and RoHS/halogen-free requirements.

Key Specifications

Pinout & Package

Package: GBU - Molded plastic case with matte tin-plated leads, UL 94V-0 rated, 4.0g weight, designed for through-hole PCB mounting. Polarity marked on case.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU1004, the GBU1002 offers lower cost and tighter voltage rating for fixed-input applications; versus KBU1002, it delivers identical electrical performance in a marginally smaller GBU package-ideal for space-constrained adapter and lighting designs.

Availability

GBU1002 is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and wall-mount AC/DC adapters requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified variants (GBU1002H).

Supply support for GBU1002 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 industrial, computing, and consumer markets since 1979.

The GBU series was developed for high-efficiency, high-reliability AC/DC front-end rectification in space-constrained power systems-emphasizing robust surge handling, low leakage, and automotive-grade qualification options.

FAQ

What is the maximum repetitive peak reverse voltage (VRRM) for GBU1002?

The GBU1002 has a VRRM rating of 100 V, meaning it can withstand up to 100 volts of repetitive reverse voltage across its AC terminals without breakdown. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version M2103) and defines the upper limit for safe AC input voltage in designs using the GBU1002.

Does GBU1002 support automotive applications?

Yes-the GBU1002H variant is AEC-Q101 qualified and explicitly listed in the ordering information section of the datasheet. While the base GBU1002 is not qualified, the H-suffix version undergoes accelerated stress testing for temperature cycling, high-temperature reverse bias, and humidity exposure, making GBU1002H suitable for automotive infotainment and body electronics power supplies.

What is the forward voltage drop of GBU1002 at full rated current?

At 10 A average forward current and 25°C junction temperature, the GBU1002 exhibits a maximum forward voltage drop of 1.1 V per diode (2.2 V total across the bridge). This value is specified in the Electrical Specifications table and directly impacts conduction losses and thermal design in high-current rectifier applications.

Is GBU1002 compatible with lead-free reflow soldering processes?

Yes-GBU1002 features matte tin-plated leads compliant with J-STD-002 for solderability, and its molding compound meets UL 94V-0 flammability rating. The device is rated for operation up to +150°C junction temperature, supporting standard lead-free reflow profiles with peak temperatures up to 260°C, provided thermal mass and dwell time remain within JEDEC J-STD-020 limits.

How does the thermal resistance of GBU1002 affect PCB layout?

The GBU1002 has a junction-to-ambient thermal resistance (RθJA) of 21°C/W. To maintain TJ ≤ 150°C at 10A, the PCB must dissipate ~11W (based on VF × IF ≈ 1.1V × 10A) with ≤12.9°C rise above ambient-requiring ≥200 mm² of 2-oz copper pour connected to both + and – terminals. Layout must avoid thermal isolation and ensure direct copper contact to all four leads.