KBL404G

Overview

The KBL404G is a single-phase silicon bridge rectifier manufactured by Taiwan Semiconductor Corporation. It features a peak repetitive reverse voltage (Vrrm) of 400 V and an average forward rectified current (If) of 4 A at 50°C ambient temperature. The device supports a peak non-repetitive surge current (Ifsm) of 150 A. Electrical characteristics include a maximum forward voltage drop (Vf) of 1.1 V at 4.0 A and a maximum reverse leakage current (Ir) of 10 μA at rated DC blocking voltage and 25°C. The component operates within a junction temperature range of -55°C to +150°C and utilizes a KBL plastic encapsulated package with four pins for through-hole mounting.

Feature Summary

• Glass passivated junctions provide high reliability and protection against mechanical stress during soldering processes.
• Molded plastic construction utilizes UL recognized flammability classification 94V-0 material for safety compliance.
• Terminals are solderable per MIL-STD-750 Method 2026, allowing flexible mounting positions on printed circuit boards.

Applications

• AC-to-DC power supply circuits requiring compact full-wave rectification.
• General purpose rectification in low to medium power electronic equipment.
• Battery charging systems utilizing standard bridge configurations.

Procurement Notes

Verify the specific manufacturer datasheet for the KBL404G to confirm RoHS compliance status and exact pinout dimensions. Ensure that the ordering suffix matches the required packaging format, such as tube or bulk, as these do not alter electrical function but affect handling. Cross-reference the part number with official Taiwan Semiconductor documentation to validate availability and production lifecycle status before finalizing procurement plans.

Selection Notes

Select the KBL404G when a 400 V reverse voltage rating and 4 A continuous current capacity are required for single-phase applications. Consider the KBL package size constraints and thermal derating requirements for resistive versus capacitive loads. Verify that the operating environment stays within the specified -55°C to +150°C junction temperature range to maintain performance integrity.

Part Context

The KBL404G belongs to the KBL series of miniature single-phase silicon bridge rectifiers from Taiwan Semiconductor. This series covers voltage ratings from 50 V to 1000 V with a consistent 4.0 A current rating. The KBL404G specifically addresses applications needing 400 V isolation while maintaining a low-profile footprint suitable for dense PCB layouts.

Replacement Considerations

Compatible substitutes include the KBL404 from Won-Top Electronics and the KBL404G from GeneSiC Semiconductor. These parts share identical electrical parameters and the KBL package form factor, ensuring direct interchangeability in existing designs without circuit modification.