Taiwan Semiconductor Corporation GBPC3506W

Overview

GBPC3506W from Taiwan Semiconductor is a 35A, 600V glass-passivated quad bridge rectifier in GBPC-W wire-structure package, featuring 1.5°C/W junction-to-case thermal resistance, <5µA reverse leakage at 25°C, and 400A peak surge current - used in high-efficiency AC-DC converters and industrial SMPS front-ends.

For engineers reviewing the GBPC3506W datasheet, GBPC3506W pinout, GBPC3506W application, or GBPC3506W equivalent, key selection criteria include rated forward current (35A), repetitive peak reverse voltage (600V), thermal performance (R_θJC = 1.5°C/W), surge capability (400A @ 8.3ms), and GBPC-W mechanical mounting configuration.

Technical Context

This discrete bridge rectifier integrates four silicon diodes in a single-phase full-wave configuration with cathode and anode terminals externally accessible via wire leads. Its glass-passivated junction ensures stable reverse characteristics and low IR drift over temperature.

The GBPC-W variant uses a wire-structure heatsink mount with chamfered corners and cathode indicator marking, enabling direct bolt-down thermal coupling to chassis or heatsinks without additional hardware - critical for conduction-cooled industrial power supplies.

Key Specifications

Pinout & Package

GBPC3506W uses the GBPC-W package: a molded plastic case with integral heatsink and four wire leads - two AC inputs (A1, A2) and two DC outputs (CATHODE, ANODE). Mounting requires mechanical fastening through the heatsink flange.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBPC3506 and GBU35J, the GBPC3506W offers superior thermal management via its integrally molded heatsink and wire-structure mounting, making it the preferred choice for conduction-cooled industrial power systems requiring safety certification and long-term reliability.

Availability

GBPC3506W is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, uninterruptible power systems (UPS), and motor drive input stages requiring stable component supply, consistent thermal performance, and UL-compliant construction.

Supply support for GBPC3506W 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, specializing in power rectifiers, TVS diodes, and MOSFETs since 1979.

The GBPC series was designed specifically for high-current, high-reliability AC-DC front-end applications in industrial, telecom, and renewable energy systems - emphasizing thermal efficiency, surge resilience, and safety certification readiness.

FAQ

What is the maximum continuous forward current rating for GBPC3506W?

The GBPC3506W is rated for 35 A average forward current at case temperature ≤75°C with adequate heatsinking. This rating assumes free-air derating per the forward current derating curve in the datasheet - at 100°C case temperature, the usable current drops to approximately 22 A. The GBPC3506W must be mounted to a heatsink to sustain full 35 A operation.

Does GBPC3506W have UL recognition and what is the file number?

Yes, GBPC3506W is UL Recognized under file #E-326243. This certification applies to the entire GBPC15/25/35 series and confirms compliance with UL 60747-1 for discrete semiconductors. The recognition covers flammability (UL 94V-0), terminal strength, and dielectric withstand - enabling direct use in UL-listed end equipment without additional component-level safety testing.

What does the "W" suffix indicate in GBPC3506W?

The "W" suffix in GBPC3506W denotes the GBPC-W package variant - a wire-structure configuration with four insulated wire leads extending from the molded case. Unlike the standard GBPC (flat-tab) or GBPC-M (terminal-cathode-parallel-to-anode) variants, GBPC-W enables direct bolt-down mounting to external heatsinks via its integral heatsink flange and wire leads, optimizing thermal transfer in space-constrained industrial designs.

What is the typical forward voltage drop of GBPC3506W at rated current?

At 17.5 A per diode (35 A total bridge output) and junction temperature of 25°C, the GBPC3506W exhibits a maximum forward voltage drop of 1.1 V per diode - resulting in ~2.2 V total conduction loss across the bridge. This value is measured under pulsed conditions (PW = 0.3 ms); actual steady-state VF will be slightly higher due to self-heating, especially above 25°C case temperature.

Can GBPC3506W replace GBPC3506 in an existing design?

No, GBPC3506W is not a drop-in replacement for GBPC3506. While both share identical electrical ratings (35A/600V), GBPC3506W uses wire leads and a heatsink-mounting flange, whereas GBPC3506 uses flat metal tabs. PCB footprint, mounting hardware, and thermal interface design differ significantly - redesign of mechanical layout and heatsink interface is required to use GBPC3506W in place of GBPC3506.