DXW21BN7511SL

Balun Overview

The DXW21BN7511SL is a surface-mount RF balun transformer manufactured by Murata Electronics. It operates within a frequency range of 1GHz to 1.5GHz and provides impedance transformation between unbalanced and balanced lines, both rated at 75 ohms. The component features a maximum insertion loss of 1.4dB and utilizes a compact 0805 (2012 Metric) package with dimensions of 2mm x 1.2mm x 1.2mm. It supports a maximum DC voltage of 20VDC and functions reliably across an operating temperature range from -40°C to +85°C.

Balun Feature Summary

• Converts single-ended signals to differential signals for balanced transmission lines
• Maintains signal integrity through low insertion loss characteristics
• Designed for high-frequency RF applications in the 1GHz to 1.5GHz band
• Utilizes a compact surface-mount footprint for automated assembly

Balun Applications

• RF front-end modules requiring 75-ohm balanced interfaces
• Wireless communication systems operating in the 1-1.5 GHz spectrum
• Signal conditioning circuits for audio and video transmission lines
• Balanced-to-unbalanced conversion in RF transceivers

Balun Procurement Notes

Verify the specific suffix 'SL' against official Murata documentation to confirm the 1GHz-1.5GHz frequency range and 75/75 Ohm impedance configuration. Ensure compatibility with RoHS3 standards and check for any recent Product Change Notices that may affect pinout or material composition prior to final design approval.

Balun Selection Notes

Select this component when a 75-ohm balanced output is required from a 75-ohm unbalanced source in the 1-1.5 GHz range. Consider the 0805 package size for space-constrained layouts. Evaluate thermal performance within the -40°C to +85°C operational limits and ensure the 1.4dB insertion loss meets system budget requirements compared to lower-loss alternatives.

Balun Part Context

This part belongs to the DXW21BN series of micro-chip transformers from Murata Electronics. The series offers various impedance ratios and frequency ranges tailored for RF signal conditioning. The DXW21BN7511SL specifically targets applications requiring 75-ohm symmetry in the higher UHF/L-band frequencies, distinguishing it from other variants like the DXW21BN7511TL which covers lower frequencies up to 870MHz.

Balun Replacement Considerations

Direct substitutes include DXW21BN7511TL for lower frequency coverage up to 870MHz, though frequency response differs. Verify pin compatibility and impedance matching before swapping with other 75-ohm baluns from different manufacturers.