KBU803G T0G

Overview

The KBU803G T0G is a single-phase bridge rectifier manufactured by Taiwan Semiconductor. It features a glass-passivated junction and utilizes the KBU-4 through-hole package. The device supports a maximum average forward rectified current of 8 A and offers a maximum repetitive peak reverse voltage of 200 V. Key electrical parameters include a peak forward surge current of 200 A, a typical instantaneous forward voltage of 1.0 V at 4 A, and a maximum DC reverse current of 5 μA at 25°C. Thermal resistance values are rated at 3°C/W (junction-to-case) and 18°C/W (junction-to-ambient). The component operates within a temperature range of -55°C to +150°C.

Feature Summary

• Glass passivated junction construction for reliability
• High case dielectric strength suitable for PCB mounting
• Halogen-free green compound molding per IEC 61249-2-21
• Matte tin plated leads solderable per JESD22-B102

Applications

• General purpose AC switching
• Static relay ON/OFF functions
• Heating regulation circuits
• Induction motor starting circuits
• Phase control operation in light dimmers

Procurement Notes

Verify the specific packing code suffix against the manufacturer's documentation to ensure correct packaging configuration. Confirm that the halogen-free green compound requirement aligns with project specifications. Check RoHS compliance status relative to the directive version required for the target market. Ensure the ordering information matches the exact voltage rating needed for the circuit design.

Selection Notes

Select this component when an 8 A continuous current rating and 200 V blocking voltage are required for single-phase bridge rectification. Consider the KBU-4 package dimensions and through-hole mounting style for board layout compatibility. Evaluate thermal management requirements based on the specified junction-to-ambient thermal resistance. Verify that the surge current capability meets the peak load demands of the application.

Part Context

This part belongs to the KBU80xG series from Taiwan Semiconductor, which includes variants ranging from 50 V to 1000 V reverse voltage ratings. The series shares common mechanical data, including the KBU case and similar thermal characteristics. The 'G' suffix indicates the use of a green, halogen-free molding compound. This specific model provides the 200 V option within the broader product family.

Replacement Considerations

Compatible substitutes within the same series include KBU801G (50 V), KBU802G (100 V), KBU804G (400 V), KBU805G (600 V), KBU806G (800 V), and KBU807G (1000 V). These parts share identical current ratings and package dimensions but differ in voltage blocking capabilities.