LFD21874MDP2A181

Overview

The LFD21874MDP2A181 is a single SAW diplexer manufactured by Murata Electronics, designed for RF signal conditioning. It operates within the frequency ranges of 823 MHz to 925 MHz and 1572.5 MHz to 1578.5 MHz. The component utilizes a surface-mount CSMD package with eight pads, featuring physical dimensions of 2.00 mm in length and 1.25 mm in width. It supports a minimum operating temperature of -40°C.

Feature Summary

• Integrates dual-band filtering capabilities within a compact single-chip architecture
• Optimized for simultaneous transmission and reception signal path separation
• Constructed using Surface Acoustic Wave (SAW) technology for high selectivity

Applications

• GNSS receiver front-end modules
• Dual-band wireless communication transceivers
• RF signal conditioning circuits requiring band separation

Procurement Notes

Verify the specific frequency bands and pin configuration against the official Murata datasheet before integration. Confirm that the 8-pad CSMD footprint matches the target PCB layout. Ensure thermal and mechanical constraints align with the specified operating temperature range during system design validation.

Selection Notes

Select this component when a compact solution is required for separating signals between the 800-900 MHz and 1.5 GHz bands. The single-chip design reduces board space compared to discrete filter assemblies. Verify compatibility with the specific application's insertion loss and isolation requirements.

Part Context

This device belongs to Murata's lineup of passive RF filters utilizing SAW technology. It serves as a specialized component for managing interference in multi-standard radio systems. The part is distinct from general-purpose capacitors or ferrite beads found in other Murata series.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Alternative solutions require independent verification of electrical performance and mechanical fit.