Taiwan Semiconductor Corporation GBU1005H

Overview

GBU1005H from Taiwan Semiconductor is a 10A, 600V AEC-Q101-qualified standard bridge rectifier in GBU package, featuring 220A surge current capability, 1500VRMS dielectric strength, and typical reverse leakage <5µA at 25°C. It serves as the AC-to-DC front-end in automotive-grade power adapters and industrial SMPS.

For engineers reviewing the GBU1005H datasheet, GBU1005H pinout, GBU1005H application, or GBU1005H equivalent, key selection criteria include its 600V VRRM rating, 2Ω junction-to-case thermal resistance, AEC-Q101 qualification status, and compatibility with J-STD-002 solderable matte tin leads.

Technical Context

The GBU1005H implements a quad-diode full-wave bridge configuration with common-cathode/common-anode topology, enabling single-phase AC input rectification without external diode pairing. Its 21°C/W junction-to-ambient thermal resistance requires heatsinking above 4A continuous conduction in enclosed environments.

Designed for high-reliability automotive applications, the device maintains ≤500µA reverse current at 125°C and exhibits 94pF junction capacitance per diode at 1MHz/4V - critical for EMI control in 60–100kHz switching supplies.

Key Specifications

Pinout & Package

Package: GBU - molded plastic case meeting UL 94V-0, 4.0g weight, matte tin-plated leads solderable per J-STD-002, polarity marked on body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU1005 and DF08MA, the GBU1005H uniquely combines AEC-Q101 qualification, 2°C/W junction-to-case resistance, and UL recognition - making it the sole option for thermally demanding automotive rectification where reliability and regulatory alignment are non-negotiable.

Availability

GBU1005H is available at Aetrix Electronics and suitable for automotive LED drivers, industrial DIN-rail power supplies, and smart home lighting adapters requiring stable component supply across extended production lifecycles.

Supply support for GBU1005H 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 automotive, industrial, and consumer markets since 1979.

The GBU series was developed specifically for high-reliability AC/DC conversion in harsh-environment applications, emphasizing AEC-Q101 compliance, robust surge immunity, and UL-recognized safety isolation.

FAQ

What is the peak repetitive reverse voltage rating of the GBU1005H?

The GBU1005H has a peak repetitive reverse voltage (VRRM) rating of 600 V. This value is fixed for the GBU1005H variant and reflects its ability to block reverse voltage during the negative half-cycle of AC input. It corresponds to a 420 V RMS AC input capability and is validated per the manufacturer's absolute maximum ratings table in Version M2103 of the datasheet.

Is the GBU1005H suitable for automotive applications?

Yes, the GBU1005H is explicitly AEC-Q101 qualified, as indicated by the "H" suffix in its ordering code. This qualification covers temperature cycling, mechanical shock, and humidity testing required for under-hood and cabin-mounted automotive electronics. The GBU1005H's -55°C to +150°C operating range and 1500VRMS isolation make it appropriate for automotive LED drivers and control modules.

What is the thermal resistance from junction to case for the GBU1005H?

The junction-to-case thermal resistance (R_θJC) of the GBU1005H is 2 °C/W, as specified in the Thermal Performance section of the datasheet. This low value enables efficient heat transfer to an external heatsink and supports sustained 10A operation when properly mounted - a key differentiator from smaller-package alternatives like DF08MA.

How does the GBU1005H differ from the GBU1005?

The GBU1005H differs from the GBU1005 solely in AEC-Q101 qualification - the "H" suffix denotes automotive-grade screening and test validation. All electrical parameters (VRRM = 600 V, IFSM = 220 A, R_θJC = 2 °C/W), package (GBU), and marking are identical. The GBU1005H is intended for automotive use; the GBU1005 is for industrial/commercial applications where AEC-Q101 is not required.

What is the maximum reverse leakage current of the GBU1005H at 125°C?

The maximum reverse leakage current (IR) of the GBU1005H at 125°C is 500 µA per diode, as stated in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 30 ms) and ensures minimal standby power loss in high-temperature automotive or industrial environments where thermal management is constrained.