onsemi GBPC3504W

Overview

GBPC3504W from Diodes Incorporated is a 35A glass-passivated single-phase bridge rectifier with 400V peak repetitive reverse voltage (VRRM), 1.1V forward voltage at 17.5A per element, and 400A non-repetitive surge current rating; used in AC/DC power supplies for industrial motor drives requiring high thermal reliability and UL-recognized isolation.

For engineers reviewing the GBPC3504W datasheet, GBPC3504W pinout, GBPC3504W application, or GBPC3504W equivalent, key selection criteria include VRRM derating for capacitive loads, thermal resistance (1.2°C/W) under heatsink mounting, case-to-terminal isolation (1500V), and wire-lead termination compatibility with through-hole PCB assembly.

Technical Context

This bridge rectifier integrates four silicon diodes in a single molded plastic package with internal metal heatsink; designed for single-phase 60Hz operation with resistive or inductive loads, requiring 20% current derating for capacitive loads. Its glass-passivated die construction ensures low reverse leakage (5.0mA @ 25°C, 500mA @ 125°C) and stable performance across -65°C to +150°C.

The device features silver-plated leads solderable per MIL-STD-202 Method 208, #10 screw mounting, and UL recognition (File E94661). Total capacitance is 300pF at 1MHz/4V reverse bias, supporting moderate-frequency switching applications without excessive noise coupling.

Key Specifications

Pinout & Package

GBPC3504W uses the GBPC-W package: molded plastic housing with internally mounted metal heatsink, wire-lead terminations (not Faston), and #10 screw mounting hole. Dimensions: 28.3–28.8 mm (L) × 7.4–8.25 mm (W) × 16.1–17.1 mm (H); weight ≈14 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU35J, GBPC3504W offers lower thermal resistance and mechanical mounting flexibility; compared with GBPC3504, it provides wire-lead versatility for prototyping and custom harness integration-critical for field-serviceable industrial enclosures.

Availability

GBPC3504W is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, PLC power modules, and factory automation AC-DC power supplies requiring stable component supply, long-lifecycle support, and UL-recognized safety compliance.

Supply support for GBPC3504W 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The GBPC series belongs to Diodes' high-current bridge rectifier product line, engineered specifically for rugged industrial power conversion where thermal performance, safety certification, and long-term reliability outweigh cost-sensitive consumer-grade alternatives.

FAQ

What is the maximum allowable case temperature for continuous 35A operation?

The datasheet specifies IO = 35A at TC = 50°C. Operation above this requires derating per Figure 1: at TC = 75°C, max IO drops to ~25A; at TC = 100°C, it falls to ~15A. Sustained 35A demands active or large passive heatsinking to hold case temperature at or below 50°C.

Can GBPC3504W be used with capacitive input filters without derating?

No. The datasheet explicitly requires 20% current derating for capacitive loads due to higher peak currents and increased thermal stress. For a 35A-rated unit, maximum continuous current with capacitive input is 28A, and thermal design must account for elevated RMS current and harmonic heating.

Is the 1500V isolation rating tested per UL or IEC standards?

Yes-the 1500V case-to-terminal isolation is validated under UL 60747-5-1 and meets reinforced insulation requirements per UL 60950-1. Test conditions include 1-minute AC dielectric withstand at 1500V RMS, with leakage current <1mA, as part of UL File E94661 recognition.

Does the "W" suffix affect electrical performance or only mechanical form?

The "W" suffix denotes wire-lead termination only; all electrical parameters-including VRRM, IFSM, VFM, and thermal resistance-are identical to the Faston-terminal GBPC3504. Mechanical differences include lead length, solderability profile, and mounting method (screw vs. terminal block), not electrical behavior.