KBL403G T0

Overview

The KBL403G T0 is a single-phase bridge rectifier manufactured by Taiwan Semiconductor Corporation, designed for general-purpose power supply applications. It features a peak repetitive reverse voltage (Vrrm) of 600 V and an average forward rectified current (Io) of 4 A. The device utilizes the KBL through-hole package with four pins, offering a compact footprint suitable for printed circuit board mounting. Key electrical characteristics include a maximum non-repetitive peak forward surge current (Ifsm) of 150 A, a peak forward voltage (Vf) of 1.1 V at 4 A, and a low reverse leakage current (Ir) of 10 µA at rated voltage. The component operates within a junction temperature range of -55°C to +150°C, ensuring reliability under varying thermal conditions.

Feature Summary

• Glass-passivated silicon p-n junctions provide high reliability and stable performance against voltage transients.
• High surge overload capability allows the device to withstand momentary current spikes during startup or fault conditions.
• Plastic encapsulation meets Underwriters Laboratories flammability classification 94V-0 for enhanced safety.

Applications

• AC-to-DC converter circuits in consumer electronics
• Power supply units for industrial control systems
• Battery charging circuits requiring robust rectification

Procurement Notes

Verify the specific ordering suffix 'T0' corresponds to the required packaging format, typically tray or tube, as standard packaging may vary by region. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer, as availability fluctuates based on global semiconductor supply chain conditions. Ensure the procurement channel provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a 600 V reverse voltage rating and 4 A continuous current capacity are required for single-phase rectification. The KBL package is appropriate for through-hole assembly where mechanical stability is prioritized over minimal PCB area. Compare Vf and Ir specifications against alternative brands to ensure compatibility with thermal management designs and efficiency targets for the specific application environment.

Part Context

The KBL403G belongs to the KBL4 series of glass-passivated bridge rectifiers from Taiwan Semiconductor. This series is engineered for cost-effective, reliable AC-to-DC conversion in medium-power applications. The '403' designation indicates the 600 V voltage grade within the family, which also includes variants for lower and higher voltage ratings, all sharing similar current handling and packaging characteristics.

Replacement Considerations

Direct replacements must match the 4 A current rating, 600 V reverse voltage, and KBL through-hole package. Verify that substitute components offer equivalent Ifsm ratings and thermal resistance values to maintain system reliability without redesigning the heatsinking or PCB layout constraints.