onsemi GBPC2508

Overview

GBPC2508 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 for heatsink mounting-used in industrial AC/DC power supplies, motor drive front-ends, and welding equipment input stages.

For engineers reviewing the GBPC2508 datasheet, GBPC2508 pinout, GBPC2508 application, or GBPC2508 equivalent, key selection criteria include thermal resistance (1.3°C/W junction-to-case), case isolation voltage (1500V), UL recognition (E94661), RoHS compliance, and through-hole screw-mount mechanical interface.

Technical Context

This device integrates four silicon diodes in a single-phase full-wave bridge configuration with glass-passivated junctions to suppress surface leakage and enhance reliability under high-humidity or contaminated environments. Its metal base enables direct thermal coupling to external heatsinks, supporting continuous 25A output at TC = 60°C when mounted on a 220 × 220 × 50 mm aluminum plate.

The GBPC2508 operates across –65°C to +150°C junction temperature range and exhibits low reverse current (5.0 µA at 25°C, 500 µA at 125°C) and typical total capacitance of 300 pF at 1 MHz and 4 V reverse bias-critical for EMI-sensitive switching power supply inputs.

Key Specifications

Pinout & Package

Package: GBPC (glass passivated bridge, molded plastic case with internal metal heatsink base, UL 94V-0 rated, #10 screw mounting hole). 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), 5.08–5.59 mm hole (H), 17.6–18.6 mm (J/P), 10.9–11.9 mm (K), 0.97–1.07 mm lead diameter (L), 31.8 mm (M).

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBJ2508, GBPC2508 delivers superior thermal management via its metal base, while KBPC2508 offers identical performance with alternate supply-chain validation-making GBPC2508 optimal for thermally constrained industrial enclosures.

Availability

GBPC2508 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor drive input stages, and welding equipment requiring stable component supply and long-lifecycle support.

Supply support for GBPC2508 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, serving industrial, computing, consumer, and communications markets since 1960.

The GBPC series belongs to Diodes' high-current bridge rectifier product line, engineered specifically for ruggedized AC/DC conversion in harsh-environment power systems where thermal reliability and surge immunity are critical.

FAQ

What is the maximum operating temperature for GBPC2508?

The GBPC2508 has a specified junction and storage temperature range of –65°C to +150°C. Its 25A average output current rating assumes case temperature (TC) is maintained at ≤60°C using appropriate heatsinking-exceeding this requires derating per Figure 1 in the datasheet.

Can GBPC2508 be used in capacitive-load applications?

Yes, but with 20% current derating applied to the 25A rating. Capacitive-input filters increase peak diode current and reduce conduction angle, raising thermal stress-so IO must be limited to 20A when feeding bulk capacitors directly without choke input.

Does GBPC2508 require forced-air cooling?

No-forced air is not required if mounted on a sufficiently sized heatsink. The datasheet specifies 25A operation with a 220 × 220 × 50 mm aluminum plate; smaller heatsinks demand current derating per the forward current derating curve (Figure 1).

Is GBPC2508 lead-free and RoHS compliant?

Yes-GBPC2508 features a lead-free finish and complies with RoHS Directive 2002/95/EC, including exemptions for glass and high-temperature solder per EU Annex Notes 5 and 7, as confirmed in Note 4 of the official datasheet.