GBPC2508

Overview

The onsemi GBPC2508 is a single-phase bridge rectifier from the GBPC25 series, designed for high-power applications. It features an average forward current (IF(AV)) of 25 A at a case temperature of 55°C and supports a maximum repetitive reverse voltage (VRRM) of 800 V. The device handles a non-repetitive peak forward surge current (IFSM) of 300 A for an 8.3 ms half-sine wave. Electrical characteristics include a maximum forward voltage drop (VF) of 1.1 V at 12.5 A and a maximum reverse current (IR) of 5 µA at 25°C. Thermal performance is defined by a power dissipation rating of 83.3 W and a junction-to-case thermal resistance of 1.5 °C/W with a heatsink. The component operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• Integrally molded heat sink provides very low thermal resistance for efficient heat dissipation.
• Offers isolated voltage from the case to the lead exceeding 2500 V.
• Terminals are finished with nickel plating suitable for standard mounting.

Applications

• Power supply circuits requiring high current rectification
• Industrial motor drive systems
• Welding equipment power stages

Procurement Notes

Verify the specific package variant required, as the GBPC2508 designation applies to both wire-lead (suffix W) and screw-mount configurations. Confirm that the selected version meets the mechanical mounting constraints of the target assembly. Ensure compliance with RoHS directives if applicable to the end product requirements.

Selection Notes

Select this component when an 800 V blocking capability and 25 A continuous current rating are necessary. Evaluate the thermal management strategy carefully, as the device dissipates significant power. Verify that the PCB or chassis layout accommodates the specific terminal type, whether through-hole wire leads or screw terminals, based on the ordering suffix.

Part Context

This part belongs to the GBPC 12, 15, 25, and 35 series of glass-passivated bridge rectifiers manufactured by onsemi. The series shares common packaging dimensions and thermal characteristics, differentiated primarily by current ratings and voltage capabilities. The GBPC2508 specifically addresses the 25 A current tier within the 800 V voltage class.

Replacement Considerations

Direct replacements must match the 25 A current rating, 800 V reverse voltage, and GBPC package outline. Verify terminal finish compatibility; the standard GBPC uses nickel terminals, while the GBPC-W variant uses silver-plated wire leads. Cross-reference with other manufacturers' GBPC-style bridges ensuring identical pinout and thermal resistance values.