Taiwan Semiconductor Corporation GBPC3502W

Overview

GBPC3502W from Taiwan Semiconductor is a 35A, 200V 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 capability; used in high-efficiency AC–DC converters and industrial SMPS.

For engineers reviewing the GBPC3502W datasheet, GBPC3502W pinout, GBPC3502W application, or GBPC3502W equivalent, key selection criteria include rated forward current (35A), repetitive peak reverse voltage (200V), thermal resistance (1.5°C/W), surge rating (400A), and GBPC-W mechanical configuration with integrated heatsink.

Technical Context

This discrete bridge rectifier integrates four silicon diodes in a single-phase full-wave configuration with glass-passivated junctions for enhanced reliability under thermal cycling and humidity stress. Its GBPC-W package features wire-structured terminals and an integrally molded heatsink enabling direct mounting to external heat sinks.

The device operates across –55°C to +150°C junction temperature range, supports 8.3ms half-sine surge currents up to 400A, and maintains <1.1V forward voltage per diode at rated DC load and 25°C junction temperature.

Key Specifications

Pinout & Package

GBPC3502W uses the GBPC-W package: a quad bridge rectifier housed in an integrally molded plastic case with wire-structured terminals, matte tin-plated leads (J-STD-002 compliant), and cathode polarity marked on the heatsink surface. Mounting torque must not exceed 20 in-lbs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBPC3502W, Vishay GBPC3502 requires board rework for terminal alignment and heatsink interface, while ON Semiconductor GBPC3502W offers true mechanical and electrical equivalence with validated production use in identical applications.

Availability

GBPC3502W is available at Aetrix Electronics and suitable for industrial SMPS, server power supplies, motor drive front-ends, and PLC power modules requiring stable component supply, long-life sourcing, and RoHS-compliant manufacturing.

Supply support for GBPC3502W 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 industrial, computing, and consumer markets since 1979.

The GBPC series was designed specifically for high-current, high-reliability AC–DC front-end rectification in space-constrained industrial power systems, emphasizing thermal performance, surge robustness, and safety certification readiness.

FAQ

What is the maximum junction temperature rating for GBPC3502W?

The GBPC3502W has a maximum junction temperature (TJ) of +150°C, allowing operation in high-ambient industrial enclosures. This rating is maintained under specified thermal conditions with proper heatsinking. Derating curves show usable current decreases above 75°C case temperature. The GBPC3502W must be mounted to a heatsink capable of dissipating heat at ≤1.5°C/W to sustain full 35A current at elevated ambient temperatures.

Does GBPC3502W meet UL safety standards?

Yes, GBPC3502W is UL Recognized under File #E-326243, confirming compliance with UL 60747-1 for discrete semiconductors. This applies to the entire GBPC15/25/35 series including GBPC3502W. The recognition covers flammability (UL 94V-0 molding compound), terminal construction, and thermal performance. GBPC3502W may be used in end equipment seeking UL listing without requiring additional component-level evaluation.

What does the "W" suffix indicate in GBPC3502W?

The "W" suffix in GBPC3502W denotes the GBPC-W package variant: a wire-structured terminal configuration with leads extending perpendicularly from the base, optimized for wire-to-terminal or quick-connect mounting. It differs from GBPC-M (parallel cathode/anode terminals) and standard GBPC (no suffix, leads parallel to heatsink plane). Mechanical drawings confirm GBPC-W has distinct lead pitch, length, and heatsink interface dimensions versus other variants.

How is polarity marked on GBPC3502W?

GBPC3502W uses a cathode indicator marked directly on the heatsink surface - a molded "–" symbol adjacent to the cathode terminal. The AC input terminals (AC1/AC2) are unmarked and interchangeable; the DC output terminals are labeled "+" (anode) and "–" (cathode) on the body. Polarity verification is confirmed via continuity test: cathode shows low resistance to both AC pins when forward-biased, while anode shows low resistance only when probed against one AC pin at a time.

What is the typical forward voltage drop of GBPC3502W at rated current?

The GBPC3502W exhibits a maximum forward voltage drop of 1.1 V per diode at IF = 17.5 A and TJ = 25°C, measured under pulsed conditions (PW = 0.3 ms). At full 35 A DC load and elevated junction temperature, VF increases to approximately 1.25 V per diode. This value directly impacts conduction loss: at 35 A, total bridge loss is ~2 × 1.25 V × 35 A = 87.5 W, necessitating appropriate thermal management to maintain TJ ≤150°C.