onsemi GBPC3502W

Overview

GBPC3502W from Diodes Incorporated is a 35A glass-passivated single-phase bridge rectifier with 200V peak repetitive reverse voltage (VRRM), 1.1V forward voltage per element at 17.5A, and 400A non-repetitive surge current rating - used in AC/DC power supplies for industrial motor drives and HVAC control modules.

For engineers reviewing the GBPC3502W datasheet, GBPC3502W pinout, GBPC3502W application, or GBPC3502W 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 junction diodes in a single molded plastic package with internal heatsink and metal base for direct thermal coupling to external heatsinks. It operates under single-phase 60Hz resistive/inductive loads, requiring 20% current derating for capacitive loads.

The glass-passivated die construction ensures low reverse leakage (5.0mA @ 25°C, 500mA @ 125°C) and stable performance across –65°C to +150°C junction temperature range. Total capacitance is 300pF per element at 1MHz and 4V reverse bias.

Key Specifications

Pinout & Package

Package: GBPC-W - molded plastic case with wire leads, metal baseplate for heatsink mounting, UL 94V-0 rated, 14g mass. Mounting via #10 screw through central hole (5.08–5.59mm diameter).

Key Features

Applications

Availability

GBPC3502W 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 extended production lifecycles.

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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and Europe, serving industrial, computing, and consumer markets.

The GBPC series targets high-reliability AC/DC front-end conversion in safety-certified power systems, emphasizing thermal robustness, isolation integrity, and long-term parametric stability under harsh environmental stress.

FAQ

What is the difference between GBPC3502W and GBPC3502?

GBPC3502W uses wire leads for PCB through-hole soldering, while GBPC3502 uses Faston terminals for quick-connect spade lugs. Both share identical electrical specs, thermal resistance, and isolation ratings, but differ in mechanical interface and mounting method - W suffix denotes leaded version per Diodes Incorporated ordering nomenclature.

Can GBPC3502W be mounted directly to a heatsink without insulating hardware?

Yes - the metal baseplate is electrically isolated from internal semiconductor die by the molded plastic encapsulation. The case-to-terminal isolation voltage is rated at 1500V, allowing direct bolt-down to grounded heatsinks without thermal pads or mica washers in most Class I applications.

What is the recommended minimum heatsink size for continuous 35A operation?

At TC = 50°C and TA = 40°C, a 220 × 220 × 50 mm aluminum plate heatsink achieves the required thermal budget. With RθJC = 1.2°C/W and RθCA ≈ 0.8°C/W for that geometry, junction temperature remains below 125°C under full load, per Figure 1 derating curve.

Does GBPC3502W meet RoHS and REACH requirements?

Yes - it carries lead-free finish and complies with RoHS Directive 2011/65/EU, including exemptions for high-temperature solder and glass under Annexes 5 and 7. REACH SVHC screening confirms absence of substances on the candidate list, as verified in Diodes Incorporated's material declarations.