748422245

Balun Overview

The Würth Elektronik 748422245 is a surface-mount RF balun designed for the 2.4GHz to 2.5GHz frequency range. It features a 0805 (2012 Metric) package with six pins. The component provides an impedance transformation from 50 ohms unbalanced to 200 ohms balanced. Key electrical specifications include a maximum insertion loss of 0.76dB and a phase difference of 180° ±10°. It is RoHS compliant, REACH unaffected, and has a Moisture Sensitivity Level (MSL) rating of 1.

Balun Feature Summary

• Provides impedance conversion between 50-ohm unbalanced and 200-ohm balanced lines
• Optimized for operation within the 2.4GHz to 2.5GHz wireless communication bands
• Utilizes a compact 0805 surface-mount footprint for space-constrained designs

Balun Applications

• Home RF systems
• DECT applications
• WLAN implementations
• Bluetooth modules
• ZigBee devices

Balun Procurement Notes

Verify the specific ordering suffix to ensure the correct packaging format, such as tape and reel or cut tape, matches production requirements. Confirm that the standard lead time aligns with project schedules, as availability may vary. Ensure the design supports the 0805 package dimensions and six-pin configuration. Check for any recent product change notifications regarding material updates or labeling changes before finalizing procurement orders.

Balun Selection Notes

Select this component when a multilayer LC balun is required for the 2.4GHz ISM band. The 200-ohm balanced output is suitable for specific antenna matching networks or differential signal paths. Consider the low insertion loss specification for efficiency-critical applications. The 180-degree phase shift ensures proper signal balancing. Evaluate the MSL 1 rating for standard reflow soldering processes without strict humidity control constraints during assembly.

Balun Part Context

This part belongs to the WE-BAL series from Würth Elektronik, which specializes in RF baluns for wireless connectivity. The 748422245 specifically targets the IEEE 802.11b/g/n and Bluetooth Low Energy frequencies. It serves as a passive signal conditioning element, replacing discrete transformer circuits with a single integrated surface-mount device to simplify PCB layout and reduce component count.

Balun Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.