GBU12G

Overview

The GBU12G is a single-phase silicon diode bridge rectifier manufactured by Diotec Semiconductor. It features a maximum average forward current (IFAV) of 12 A and a peak repetitive reverse voltage (VRRM) of 400 V. The device has a typical forward voltage (VF) of 1 V at 12 A and a maximum non-repetitive peak forward surge current (IFSM) of 300 A at 60 Hz. Operating temperatures range from -50°C to +150°C. Thermal resistance values are 2.7 K/W junction-to-case and 18 K/W junction-to-ambient. Recommended protective resistance is 1.6 Ω with an admissible load capacitor of 2500 µF.

Feature Summary

• Single-phase bridge configuration for AC to DC conversion
• High surge current capability up to 300 A
• Wide operating temperature range from -50°C to +150°C
• Plastic case material classified as UL 94V-0 flammability rated

Applications

• General purpose AC to DC power supply circuits
• Industrial control systems requiring standard reliability
• Commercial electronic equipment power stages

Procurement Notes

Verify the specific part number against official Diotec documentation to confirm electrical ratings and package dimensions. Ensure compliance with RoHS and ELV directives if required by your application standards. Check for any recent product changes or datasheet updates on the manufacturer's website before finalizing procurement specifications.

Selection Notes

Select this component when a 12 A continuous current rating and 400 V reverse voltage blocking capability are required. Consider the thermal resistance characteristics for heat dissipation planning in enclosed environments. Verify that the recommended protective resistance and load capacitor values align with your circuit design to prevent exceeding the surge current limits during startup.

Part Context

The GBU12G belongs to the GBU12A through GBU12M series of single-phase bridge rectifiers from Diotec Semiconductor. This family shares identical physical dimensions, pinout configurations, and current ratings, differing primarily in their peak repetitive reverse voltage ratings. The GBU variant utilizes a through-hole GBU-4 package suitable for PCB mounting.

Replacement Considerations

Other members of the GBU12 series (GBU12A, B, D, J, K, M) offer alternative voltage ratings but share the same package and current specifications. Cross-reference with other manufacturers' GBU-style bridge rectifiers ensuring matching IFAV, VRRM, and thermal parameters.