Taiwan Semiconductor Corporation GBU407H

Overview

GBU407H from Taiwan Semiconductor is a 4A, 1000V AEC-Q101 qualified standard bridge rectifier in GBU package, featuring 1500VRMS dielectric strength, 150A surge rating (8.3ms), and 4°C/W junction-to-case thermal resistance - used in automotive-grade SMPS and lighting power supplies.

For engineers reviewing the GBU407H datasheet, GBU407H pinout, GBU407H application, or GBU407H equivalent, key selection criteria include peak reverse voltage (1000V), forward current rating (4A), AEC-Q101 qualification status, thermal resistance (R_θJC = 4°C/W), and UL recognition (E-326243).

Technical Context

The GBU407H integrates four silicon diodes in a single-phase full-wave bridge configuration with quad anode-cathode topology. It supports repetitive peak reverse voltages up to 1000V and delivers 4A average forward current at case temperature ≤75°C.

Thermal performance is defined by R_θJA = 20°C/W and R_θJC = 4°C/W, enabling reliable operation up to T_J = 150°C. Reverse leakage remains ≤500µA at 125°C under rated V_RRM, and junction capacitance is 45pF per diode at 1MHz/4V.

Key Specifications

Pinout & Package

GBU407H uses the industry-standard GBU molded plastic package (4.00g weight, UL 94V-0 rated compound) with matte tin-plated leads solderable per J-STD-002. Polarity is marked on the case.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU407H, GBU4J offers identical electrical ratings but lacks automotive qualification and has slightly higher thermal resistance, while DF08MA provides automotive-grade reliability at the system level but with looser semiconductor-specific stress validation and different mechanical form factor.

Availability

GBU407H is available at Aetrix Electronics and suitable for automotive on-board chargers, industrial LED drivers, medical AC-DC adapters, and smart home power supply units requiring stable component supply across extended product lifecycles.

Supply support for GBU407H 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 AEC-Q101 compliance, UL safety recognition, and consistent surge robustness across voltage grades.

FAQ

What is the peak repetitive reverse voltage rating for GBU407H?

The GBU407H has a peak repetitive reverse voltage (V_RRM) rating of 1000 V. This value defines the maximum instantaneous reverse voltage the device can block repeatedly without breakdown. It is validated per the absolute maximum ratings table in the Taiwan Semiconductor datasheet Version M2103 and applies across the full operating temperature range from –55°C to +150°C.

Is GBU407H qualified for automotive applications?

Yes, GBU407H is explicitly AEC-Q101 qualified, as indicated by the "H" suffix in its ordering code. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - confirming suitability for automotive power electronics such as on-board chargers and body control modules.

What is the thermal resistance from junction to case for GBU407H?

The junction-to-case thermal resistance (R_θJC) of GBU407H is 4°C/W, measured under standard test conditions. This low value enables effective heat transfer to an external heatsink or PCB copper plane, supporting continuous 4A operation at case temperatures up to 75°C without exceeding the 150°C maximum junction temperature.

Does GBU407H meet UL safety standards?

Yes, GBU407H is UL Recognized under File #E-326243. This certification confirms compliance with UL 60747-5-1 for discrete semiconductors, covering flammability (UL 94V-0), dielectric strength (1500V_RMS), and construction integrity - critical for end-equipment safety approvals in North America.

What is the forward voltage drop of GBU407H at rated current?

The forward voltage drop (V_F) of GBU407H is specified as 1.1 V maximum at I_F = 4 A and T_J = 25°C. This parameter directly determines conduction losses in the rectifier stage; actual drop may decrease slightly at lower junction temperatures and increase marginally at elevated T_J.