onsemi GBPC2508W

Overview

GBPC2508W from Diodes Incorporated is a 25A glass passivated single-phase bridge rectifier with 800V peak repetitive reverse voltage (VRRM), 1.1V forward voltage per element at 12.5A, 300A non-repetitive surge rating, and metal-base thermal design for heatsink mounting. It delivers high-efficiency AC-to-DC conversion in industrial power supplies and motor drive front-ends.

For engineers reviewing the GBPC2508W datasheet, GBPC2508W pinout, GBPC2508W application, or GBPC2508W equivalent, key selection criteria include VRRM derating for capacitive loads, thermal resistance junction-to-case (1.3°C/W), case isolation voltage (1500V), and through-hole #10 screw mounting compatibility.

Technical Context

This device integrates four silicon diodes in a single-phase full-wave bridge configuration with glass-passivated die construction to minimize reverse leakage (5.0μA at 25°C) and ensure stable operation up to 150°C junction temperature. Its internal metal base enables direct mechanical and thermal coupling to external heatsinks.

The GBPC2508W supports resistive/inductive loads at full 25A average output current when case temperature is maintained at ≤60°C, but requires 20% current derating for capacitive loads. Total capacitance is 300pF per element at 1MHz and 4V reverse bias.

Key Specifications

Pinout & Package

GBPC2508W uses the GBPC-W molded plastic package with internal heatsink and wire leads ('W' suffix). Dimensions: 28.3–28.8 mm (A), 7.4–8.25 mm (B), 16.1–17.1 mm (C), 18.8–21.3 mm (E), 13.8–14.8 mm (G), 17.6–18.6 mm (J), 10.9–11.9 mm (K), 31.8 mm (M), 17.6–18.6 mm (P); mounting hole Ø5.08–5.59 mm for #10 screw.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBJ2508 and KBPC2508W, GBPC2508W uniquely combines screw-mount thermal interface, 300A surge capability, and 1.1V forward drop-making it optimal for high-reliability, heatsink-coupled industrial rectification where manual assembly and thermal performance are prioritized.

Availability

GBPC2508W is available at Aetrix Electronics and suitable for industrial power supplies, motor drive front-ends, welding equipment power stages, and uninterruptible power supply (UPS) systems requiring stable component supply and long-lifecycle support.

Supply support for GBPC2508W 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, manufacturing, and sales operations across Asia, Europe, and North America.

The GBPC series belongs to Diodes' high-current bridge rectifier product line, engineered specifically for ruggedized AC/DC conversion in industrial, appliance, and power tool applications demanding thermal resilience and surge immunity.

FAQ

What does the 'W' suffix indicate in GBPC2508W?

The 'W' suffix denotes wire leads instead of Faston terminals. GBPC2508W features tinned copper wire leads (not solder tabs or quick-connects), enabling direct soldering to terminal blocks or chassis wiring. This configuration supports manual assembly and field service replacement in high-vibration environments like motor controls and welding gear.

Can GBPC2508W be used with capacitive loads?

Yes, but with mandatory 20% current derating: maximum average output current drops from 25A to 20A when feeding capacitive-input power supplies. This limitation arises from increased peak currents and thermal stress during capacitor charging cycles, as specified in the datasheet's electrical characteristics table.

Is GBPC2508W still in active production?

No-Diodes Incorporated has marked GBPC2508W as obsolete and recommends GBJ2508 as the designated replacement. However, Aetrix Electronics maintains legacy inventory and offers extended supply support, including obsolescence mitigation planning and cross-reference engineering for migration paths.

What is the recommended heatsink mounting torque for GBPC2508W?

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 both mechanical integrity and thermal performance.