KBPF404G

Overview

The KBPF404G is a single-phase bridge rectifier manufactured by Taiwan Semiconductor Corporation. It utilizes silicon planar die construction and features glass passivation for junction protection. The device is rated for a maximum average forward rectified current of 4.0 A at an ambient temperature of 130°C. It supports a repetitive peak reverse voltage of 400 V. The component operates within a junction temperature range of -55°C to +150°C and withstands a non-repetitive peak forward surge current of 120 A. It is housed in a compact KBF plastic package with four terminals, designed for through-hole mounting on printed circuit boards.

Feature Summary

• Glass passivated junctions provide robust environmental protection and long-term reliability under varying thermal conditions.
• High surge current capability ensures resilience against transient overloads during power-up or fault events.
• Low forward voltage drop characteristics contribute to improved system efficiency and reduced heat generation.

Applications

• General-purpose AC to DC conversion in low to medium power supply circuits
• Battery charging systems requiring reliable rectification
• Inverter circuits for converting DC input to AC output

Procurement Notes

Verify the manufacturer marking and date code on the component body to confirm authenticity from Taiwan Semiconductor Corporation. Ensure the ordering suffix matches the specific voltage rating and packaging requirements. Cross-reference the datasheet specifications with your design constraints before finalizing procurement to ensure compatibility with your assembly process.

Selection Notes

Select this component when a 4 A current rating and 400 V reverse voltage are required in a compact form factor. Consider the KBF package dimensions for PCB layout clearance. Evaluate the thermal management needs based on the 150°C junction temperature limit and the expected ambient operating environment to ensure safe operation margins.

Part Context

This component belongs to the KBF series of bridge rectifiers from Taiwan Semiconductor Corporation. The series offers various voltage ratings while maintaining a consistent 4 A current capacity and standardized KBF package outline. This family is designed for general-purpose applications where space efficiency and reliable performance are prioritized in power conversion designs.

Replacement Considerations

Compatible substitutes include the KBPF404 from other manufacturers offering identical 4 A and 400 V ratings in the KBF package. Verify that alternative parts meet the same electrical parameters and physical dimensions to ensure direct pin-to-pin replacement without modifying the PCB footprint.

FAQ

What is the maximum operating junction temperature for the KBPF404G?

The maximum operating junction temperature is +150°C.

Does the KBPF404G feature glass passivation?

Yes, the device utilizes glass passivation for its junctions to enhance durability and reliability.

What is the non-repetitive peak forward surge current rating?

The component can withstand a non-repetitive peak forward surge current of 120 A.