Taiwan Semiconductor Corporation GBPC3508M

Overview

GBPC3508M from Taiwan Semiconductor is a 35A, 800V glass-passivated quad bridge rectifier in GBPC-M package, featuring 1.5°C/W junction-to-case thermal resistance, <5µA reverse leakage at 25°C, and 400A peak surge current for high-reliability AC/DC conversion in industrial power supplies.

For engineers reviewing the GBPC3508M datasheet, GBPC3508M pinout, GBPC3508M application, or GBPC3508M equivalent, key selection criteria include rated forward current (35A), repetitive peak reverse voltage (800V), thermal resistance (1.5°C/W), surge capability (400A), and GBPC-M terminal orientation for heatsink mounting.

Technical Context

This device integrates four silicon diodes in a single-phase full-wave bridge configuration with glass-passivated junctions for enhanced moisture and contamination resistance. Its GBPC-M package features cathode terminals parallel to anode terminals, enabling direct heatsink mounting via four screw holes and optimized thermal path.

The rectifier operates across -55°C to +150°C junction temperature range and supports RMS input voltages up to 560V. With typical forward voltage of 1.1V per diode at rated current and thermal resistance of 1.5°C/W, it delivers stable conduction under sustained load in switching mode power supplies.

Key Specifications

Pinout & Package

GBPC3508M uses the GBPC-M package: a molded plastic case with integral heatsink, matte tin-plated leads, UL 94V-0 compliant molding compound, and cathode terminals oriented parallel to anode terminals for standardized mechanical mounting. Weight: 16.95g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBPC3508M, GBPC3508 offers identical ratings but requires mechanical redesign for terminal alignment, while GBU35J trades 200V headroom and thermal performance for smaller footprint and lower cost in less demanding environments.

Availability

GBPC3508M is available at Aetrix Electronics and suitable for industrial SMPS, AC-DC front-end converters, and motor drive power supplies requiring stable component supply, long lifecycle support, and traceable sourcing.

Supply support for GBPC3508M 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.

The GBPC series was designed specifically for high-current, high-reliability AC/DC conversion in industrial and commercial power systems, emphasizing thermal robustness, safety certification, and long-term stability under continuous load.

FAQ

What is the maximum junction temperature rating for GBPC3508M?

The GBPC3508M has a maximum junction temperature (TJ) rating of +150°C, with operational capability down to -55°C. This wide range supports use in harsh industrial environments where ambient temperatures exceed 85°C. The device's 1.5°C/W thermal resistance ensures effective heat transfer to an external heatsink, helping maintain safe junction temperatures under full 35A load. GBPC3508M must be mounted to a heatsink meeting minimum thermal interface requirements to achieve this rating.

Does GBPC3508M have UL recognition?

Yes, GBPC3508M is UL Recognized under File #E-326243, confirming compliance with UL 60747-4 for semiconductor devices. This certification validates its suitability for use in end equipment requiring safety agency approval, including industrial power supplies and commercial AC/DC converters. The GBPC-M package's UL 94V-0 flammability rating further supports system-level compliance. GBPC3508M meets these standards as shipped - no additional customer qualification is required.

What does the "M" suffix indicate in GBPC3508M?

The "M" suffix in GBPC3508M denotes the GBPC-M package variant, where cathode terminals are oriented parallel to anode terminals - distinct from the standard GBPC (perpendicular) or GBPC-W (wire leads) versions. This configuration enables direct bolt-down mounting to a heatsink using four mounting holes and facilitates consistent thermal contact. GBPC3508M shares all electrical specifications with GBPC3508 but requires specific PCB footprint and mechanical layout alignment.

What is the forward voltage drop of GBPC3508M at rated current?

The GBPC3508M exhibits a maximum forward voltage drop of 1.1 V per diode at IF = 17.5 A and TJ = 25°C, resulting in ~2.2 V total bridge drop under full 35A DC load. This value is measured under pulsed conditions (PW = 0.3 ms) and remains stable across temperature due to the glass-passivated junction. At elevated junction temperatures, VF decreases slightly, improving conduction efficiency in thermally managed designs using GBPC3508M.

Is GBPC3508M RoHS compliant and lead-free?

Yes, GBPC3508M is fully RoHS compliant and manufactured with lead-free materials. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the device passes JESD 201 Class 1A whisker testing. These qualifications ensure compatibility with modern reflow and wave soldering processes used in high-volume electronics manufacturing. GBPC3508M's compliance is documented in TSC's official product change notices and material declarations.