SMC Diode Solutions GBPC35005W

Overview

GBPC35005W from Diodes Incorporated is a 35A glass-passivated single-phase bridge rectifier with 50V peak repetitive reverse voltage, 1.1V forward voltage per element at 17.5A, and 400A non-repetitive surge rating - used in AC/DC power supplies for industrial motor drives and HVAC control modules.

For engineers reviewing the GBPC35005W datasheet, GBPC35005W pinout, GBPC35005W application, or GBPC35005W equivalent, key selection criteria include thermal resistance (1.2°C/W), case isolation voltage (1500V), mounting torque limit (8.0 in-lb), and UL recognition (E94661) for safety-critical power conversion designs.

Technical Context

This device integrates four silicon diodes in a single molded plastic package with internal heatsink and metal base for direct PCB mounting via #10 screw. It operates across –65°C to +150°C and supports resistive/inductive loads at 60Hz without derating.

The glass-passivated die construction ensures low reverse leakage (5.0mA @ 25°C, 500mA @ 125°C) and stable performance under thermal cycling. Total capacitance is 300pF at 1MHz and 4V reverse bias, minimizing high-frequency noise coupling in switching power supply front-ends.

Key Specifications

Pinout & Package

Package: GBPC-W - Molded plastic case with integral metal heatsink base, wire leads (not Faston), UL 94V-0 rated, mounted via #10 screw hole (5.08–5.59 mm diameter).

Key Features

Applications

Availability

GBPC35005W is available at Aetrix Electronics and suitable for industrial motor drives, HVAC control modules, commercial lighting ballasts, and PLC power supplies requiring stable component supply across multi-year production cycles.

Supply support for GBPC35005W 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 and manufacturing operations across Asia and the Americas.

The GBPC series targets high-current, high-reliability AC/DC front-end applications where thermal robustness, safety certification, and surge resilience are critical - especially in industrial and building automation systems.

FAQ

What is the maximum recommended mounting torque for GBPC35005W?

The datasheet specifies a maximum mounting torque of 8.0 inch-pounds for the #10 screw used to secure the metal base to the heatsink. Exceeding this value risks cracking the molded plastic case or deforming the internal thermal interface, compromising thermal performance and long-term mechanical integrity under thermal cycling.

Can GBPC35005W be used with capacitive loads without derating?

No. The datasheet explicitly requires a 20% current derating for capacitive loads due to higher peak charging currents that increase thermal stress on the diode junctions. For a 35A-rated device, this limits continuous use to 28A average output current when feeding bulk capacitors directly without inrush limiting.

What is the significance of the "W" suffix in GBPC35005W?

The "W" suffix denotes wire leads instead of Faston terminals. This configuration supports through-hole soldering and manual or automated wire termination, offering greater mechanical flexibility in chassis-mounted power supplies where rigid blade connectors are impractical or subject to vibration-induced loosening.

How does the 1.2°C/W thermal resistance impact heatsink selection?

With RθJC = 1.2°C/W and a maximum junction temperature of 150°C, a 50°C case temperature rise allows 83.3W of total dissipation (100°C ÷ 1.2). At 35A and 1.1V VFM, power loss is ~38.5W per leg × 2 active legs = 77W - requiring a heatsink with ≤0.15°C/W RθSA to maintain safe junction temperature under worst-case ambient conditions.