RFBLN1005040K5T

Balun Overview

The RFBLN1005040K5T is an RF balun transformer manufactured by Walsin Technology Corporation, designed for wireless local area network applications. It operates within a frequency range of 4.9GHz to 5.95GHz, providing impedance transformation between 50 ohms and 100 ohms. The device features a phase difference of 180° ±10° and a maximum insertion loss of 0.75dB. Packaged in a compact 0402 (1005 metric) surface-mount format with four pads, it supports TR, CT, and Digi-Reel packaging options.

Balun Feature Summary

• Provides balanced-to-unbalanced signal conversion for RF circuits
• Optimized for 5GHz wireless LAN frequency bands
• Compact 0402 surface-mount package design

Balun Applications

• 5GHz Wireless Local Area Network (W-LAN) systems
• RF front-end modules requiring impedance matching
• Balanced-to-unbalanced signal conversion in communication devices

Balun Procurement Notes

Verify the specific ordering suffix to ensure correct packaging configuration, as the component is available in tape and reel, cut tape, and Digi-Reel formats. Confirm that the selected variant matches the required 0402 footprint and electrical specifications for the target 4.9GHz to 5.95GHz application. Cross-reference manufacturer documentation to validate RoHS compliance and moisture sensitivity level requirements before finalizing procurement orders.

Balun Selection Notes

Select this component when designing circuits operating specifically within the 4.9GHz to 5.95GHz spectrum. Ensure the system requires a 50-ohm to 100-ohm impedance transformation ratio. The low insertion loss characteristic makes it suitable for high-efficiency RF paths. Verify that the 0402 package dimensions align with the printed circuit board layout constraints and that the phase balance meets the strict tolerance requirements of the intended wireless standard.

Balun Part Context

This part belongs to the RFBLN series of RF baluns from Walsin Technology Corporation. These components are engineered for high-frequency wireless applications, offering reliable performance in compact form factors. The series supports various impedance configurations tailored for modern communication standards, ensuring efficient signal integrity in space-constrained electronic designs.

Balun Replacement Considerations

No public confirmed substitute part numbers are documented.