GBS4K

Overview

The Diotec Semiconductor GBS4K is a single-phase bridge rectifier from the GBS4A to GBS4M series. It features an average forward current (IFAV) of 4 A and a peak repetitive reverse voltage (VRRM) of 800 V. The device has a maximum forward voltage (VF) of less than 1.05 V at 2 A, with a leakage current (IR) below 5 µA at 25°C. Peak forward surge current (IFSM) ratings are 80 A for 50 Hz and 90 A for 60 Hz half-sine waves. Recommended protective resistance (Rt) is 9 Ω, supporting an admissible load capacitor (CL) of 550 µF. Thermal resistance junction-to-case (RthC) is less than 12 K/W, while junction-to-ambient (RthA) is under 40 K/W.

Feature Summary

• High-voltage capability with 800 V peak repetitive reverse voltage rating
• Robust surge handling with up to 90 A non-repetitive forward surge current
• Low thermal resistance design facilitating efficient heat dissipation
• Standardized mounting dimensions compatible with commercial and industrial applications

Applications

• General-purpose AC to DC power supply conversion
• Industrial control systems requiring reliable bridge rectification
• Commercial electronics utilizing standard silicon bridge rectifiers

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm compliance with RoHS and ELV directives as stated in documentation. Ensure ordering suffixes match required voltage ratings within the GBS4 series. Validate thermal management requirements based on ambient temperature derating curves provided in the technical data.

Selection Notes

Select the GBS4K when an 800 V reverse voltage rating is necessary for the application circuit. Consider the 4 A continuous current capacity relative to expected load conditions. Evaluate the recommended 9 Ω protective resistance to ensure surge currents remain within the specified 80 A or 90 A limits depending on line frequency. Verify that the operating temperature range of -50°C to +150°C meets environmental demands.

Part Context

The GBS4K belongs to the GBS4A through GBS4M family of single-phase bridge rectifiers manufactured by Diotec Semiconductor. This series offers various voltage ratings from 50 V to 1000 V while maintaining a consistent 4 A forward current capability. The components are designed for general commercial and industrial use, providing standardized performance across different voltage classes within the same package outline.

Replacement Considerations

Direct substitutes include other GBS4 series variants such as GBS4G or GBS4M if voltage ratings differ. Cross-brand equivalents must match the 4 A current, 800 V voltage, and similar thermal characteristics. Verify pinout compatibility and physical dimensions before substitution.