GBPC3508T

Overview

The GeneSiC Semiconductor GBPC3508T is a single-phase glass-passivated silicon bridge rectifier designed for high-temperature applications. It features an integrally molded heat sink and offers a repetitive peak reverse voltage of 800 V with a maximum average forward rectified current of 35 A. The device supports a peak forward surge current of 400 A and operates within a junction temperature range of -55°C to 150°C. Key electrical characteristics include a maximum instantaneous forward voltage drop of 1.1 V per leg, a typical thermal resistance of 1.4°C/W, and an RMS isolation voltage of 2500 V from case to leads.

Feature Summary

• Integrally molded heat sink provides low thermal resistance for efficient heat dissipation
• Universal three-way terminals allow snap-on, wire-around, or PCB mounting configurations
• High temperature soldering capability guaranteed at 260°C for 10 seconds
• Glass passivation ensures stable performance under high surge current conditions

Applications

• Bolt-down mounting on heat sinks using silicone thermal compound
• General-purpose AC to DC power supply circuits
• Industrial equipment requiring high surge current handling

Procurement Notes

Verify the specific terminal configuration upon ordering, as the suffix indicates either nickel-plated faston lugs or copper leads. Confirm that the procurement matches the 800 V rating required for the application. Ensure compatibility with the specified mounting torque of 20 inch-lbs maximum during installation.

Selection Notes

Select this component when an 800 V blocking voltage and 35 A continuous current are required in a compact module form factor. Consider the 1.4°C/W thermal resistance for heatsink sizing calculations. Verify that the operating environment stays within the -55°C to 150°C junction temperature limits.

Part Context

This part belongs to the GBPC-T/W series of single-phase bridge rectifiers. It shares mechanical dimensions and thermal characteristics with variants like the GBPC3506T and GBPC3510T, differing primarily in the repetitive peak reverse voltage rating. The package utilizes a standard flange mount design common in industrial power electronics.

Replacement Considerations

Direct substitutes include other manufacturers' GBPC3508 models, such as those from Vishay (VS-GBPC3508) or ON Semiconductor. Ensure replacement parts match the 800 V VRRM, 35 A IO, and 1.1 V VF specifications. Verify terminal type compatibility if the original uses specific faston lugs versus copper leads.