LFCN-900+

Overview

The LFCN-900+ is a low-pass filter manufactured by Mini-Circuits, designed for surface-mount applications. It features an LTCC construction and operates within a frequency range from DC to 850 MHz. The component provides a cutoff frequency of 900 MHz and maintains a characteristic impedance of 50 Ohms. It is housed in a compact FV1206 case style, utilizing a 4-SMD, no-lead package configuration. This device supports operation up to a maximum temperature of 100°C and complies with RoHS standards.

Feature Summary

• Utilizes Low Temperature Co-fired Ceramic (LTCC) technology for robust signal filtering
• Provides high isolation characteristics through ceramic filter design
• Supports direct surface-mount integration via a compact SMD package

Applications

• RF front-end filtering in communication systems
• Harmonic suppression in transmitter stages
• Signal conditioning in microwave circuits

Procurement Notes

Verify the specific suffix requirements before ordering. The standard LFCN-900+ model does not pass DC; if DC continuity is required, confirm availability of the D-suffix variant which offers high isolation to ground. Ensure compatibility with the FV1206 footprint during PCB layout. Cross-reference datasheet electrical specifications against system requirements to validate performance at target frequencies.

Selection Notes

Select this component when a sharp cutoff near 900 MHz is necessary for 50-Ohm systems. Consider the LTCC construction for stability in varying thermal conditions. Evaluate the physical dimensions of the FV1206 package against available board space. If DC blocking is acceptable, the standard version suffices; otherwise, investigate alternative suffixes that support DC passage while maintaining similar RF performance profiles.

Part Context

This part belongs to Mini-Circuits' LFCN series of ceramic filters. These components are engineered for high-performance RF and IF applications. The series emphasizes miniaturization and reliability using advanced ceramic materials. The LFCN-900+ specifically targets applications requiring effective attenuation of frequencies above 900 MHz while preserving lower frequency signals.

Replacement Considerations

Public confirmed substitute part numbers: None identified.