Taiwan Semiconductor Corporation GBPC3508W

Overview

GBPC3508W from Taiwan Semiconductor is a 35A, 800V standard bridge rectifier in GBPC-W wire-structure package, featuring glass-passivated junctions, integrally molded heatsink (R_θJC = 1.5°C/W), and typical reverse leakage <0.2μA. It delivers high surge capability (I_FSM = 400A) for AC–DC conversion in industrial switching power supplies.

For engineers reviewing the GBPC3508W datasheet, GBPC3508W pinout, GBPC3508W application, or GBPC3508W equivalent, key selection factors include rated forward current (35A), peak reverse voltage (800V), thermal resistance (1.5°C/W), and wire-termination mechanical configuration for heatsink mounting.

Technical Context

This quad-configuration bridge rectifier integrates four silicon diodes in a single-phase full-wave arrangement with common cathode and anode terminals. Its glass-passivated junction ensures stable reverse characteristics up to 150°C junction temperature and low IR (<5μA at rated V_RRM).

The GBPC-W package uses matte tin-plated wire leads compatible with J-STD-002 soldering, features UL 94V-0 molding compound, and supports mounting torque up to 20 in-lbs. Polarity is marked via cathode indicator on the heatsink surface.

Key Specifications

Pinout & Package

GBPC3508W uses the GBPC-W package: a molded plastic case with integral aluminum heatsink and four wire leads (two AC inputs, one DC+ cathode, one DC− anode). Leads are matte tin-plated and conform to J-STD-002 solderability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBPC3508 and GBU35J, GBPC3508W offers the highest V_RRM among wire-lead bridges in its class, verified UL recognition, and lowest thermal resistance - making it optimal for space-constrained, safety-critical, high-input-voltage industrial rectification.

Availability

GBPC3508W is available at Aetrix Electronics and suitable for industrial SMPS, motor drive power supplies, LED streetlight drivers, and uninterruptible power supply (UPS) systems requiring stable component supply across multi-year production cycles.

Supply support for GBPC3508W 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 GBPC series was designed specifically for high-reliability AC–DC front-end rectification in industrial-grade power supplies, emphasizing thermal robustness, surge resilience, and regulatory compliance.

FAQ

What is the maximum junction temperature rating for GBPC3508W?

The GBPC3508W has a maximum junction temperature (T_J) of +150°C, allowing continuous operation in high-ambient industrial environments such as enclosed motor drives or outdoor LED drivers. This rating is validated across the full operating range and supports derating curves shown in the official Taiwan Semiconductor datasheet revision M2211. Thermal design must maintain T_J ≤150°C using the specified R_θJC = 1.5°C/W path to heatsink.

Does GBPC3508W have UL recognition?

Yes, GBPC3508W is UL Recognized under File #E-326243, confirming compliance with UL 60950-1 and UL 62368-1 for use in end-equipment safety certification. This applies specifically to the GBPC-W package variant and is documented in Taiwan Semiconductor's official datasheet (Version M2211). The UL mark covers flammability (UL 94V-0), electrical insulation, and thermal performance.

What is the forward voltage drop of GBPC3508W at rated current?

The GBPC3508W exhibits a maximum forward voltage drop (V_F) of 1.1 V per diode at I_F = 17.5 A and T_J = 25°C, measured under pulsed conditions (PW = 0.3 ms). At full rated 35A average current, V_F increases due to self-heating but remains within design limits for efficient AC–DC conversion. This value is confirmed in the Electrical Specifications table of the Taiwan Semiconductor GBPC15/25/35 Series datasheet.

How is polarity marked on GBPC3508W?

Polarity on GBPC3508W is indicated by a cathode symbol (band or "K") embossed on the aluminum heatsink surface adjacent to the positive (+) terminal. The two AC input terminals are unmarked and interchangeable; the − terminal is electrically tied to the heatsink base. This marking follows Taiwan Semiconductor's standard GBPC-W layout per drawing HQ2SD07-GBPCW-056 REV A.

What is the surge current rating for GBPC3508W?

The GBPC3508W is rated for a non-repetitive peak forward surge current (I_FSM) of 400 A for an 8.3 ms single half-sine wave at T_A = 25°C. This rating is validated per JEDEC standards and supports reliable cold-start behavior in high-capacitance-input SMPS. The corresponding I²t rating is 664 A²s, enabling robust protection coordination with upstream fuses or circuit breakers.