LDB18869M10G-120

Balun Overview

The LDB18869M10G-120 is a chip multilayer hybrid balun manufactured by Murata Electronics. It operates within the frequency range of 824 MHz to 915 MHz, with a center frequency specification of 869 MHz and a bandwidth of 91 MHz. The component features a 50 Ohm single-ended port and a 100 Ohm differential port. It utilizes SMD/SMT termination types and is housed in a compact 0603 (1608 metric) package. The device supports board mount installation and functions reliably across an operating temperature range from -40°C to +85°C.

Balun Feature Summary

• Provides balanced-to-unbalanced signal conversion for RF applications
• Utilizes multilayer hybrid construction for compact integration
• Designed for surface-mount assembly processes

Balun Applications

• RF front-end modules in wireless communication devices
• Signal conditioning for balanced antenna interfaces
• Integration in compact mobile terminal circuitry

Balun Procurement Notes

This component is scheduled for obsolescence and will be discontinued by the manufacturer. Verification of current availability status is required before procurement planning. Distributors may list remaining stock, but supply continuity cannot be guaranteed. Engineers should review the official discontinuation notification to assess impact on existing designs and initiate necessary replacement strategies promptly.

Balun Selection Notes

Selection requires confirmation of impedance matching between the 50 Ohm source and 100 Ohm differential load. The 0603 package size dictates PCB layout constraints. Operating temperature limits must align with the target environment specifications. Designers should verify that the 824 MHz to 915 MHz frequency range fully encompasses the intended operational band without significant insertion loss or imbalance degradation.

Balun Part Context

The LDB18869M10G-120 belongs to the LDB series of hybrid baluns produced by Murata Electronics. This series focuses on providing passive signal transformation solutions for radio frequency circuits. The component serves as a critical interface element between unbalanced transmission lines and balanced antenna structures, facilitating efficient power transfer in modern wireless hardware architectures.

Balun Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation due to the product's end-of-life status. Engineers must identify alternative components based on equivalent electrical parameters, specifically the 824–915 MHz range, 50/100 Ohm impedance configuration, and 0603 package dimensions.