LFCN-2000D+

Overview

The LFCN-2000D+ is a ceramic low-pass filter from Mini-Circuits with a 2.275 GHz cutoff frequency and 50 Ohm impedance. It utilizes LTCC technology in a compact 4-SMD, no-lead package. The 'D' suffix indicates DC pass-through capability between input and output terminals, providing minimum 100 MOhm isolation to ground. Designed for high reliability, it operates within a temperature range of -40°C to +85°C and supports a maximum power handling of 2 Watts.

Feature Summary

• Provides sharp attenuation above the 2.275 GHz cutoff frequency
• Enables direct DC signal transmission from input to output
• Offers high isolation resistance to ground for DC paths
• Constructed using robust LTCC material for thermal stability

Applications

• RF front-end filtering in wireless communication systems
• Harmonic suppression in transmitter output stages
• Signal conditioning in test and measurement equipment
• Interstage filtering in multi-band transceivers

Procurement Notes

Verify the specific suffix 'D+' to confirm DC pass functionality, as standard versions may lack this feature. Ensure the 50 Ohm impedance matches your system design. Confirm the operating temperature range meets your environmental requirements. Check for RoHS compliance if required by your manufacturing standards. Validate that the surface-mount package type fits your PCB footprint constraints.

Selection Notes

Choose this component when both RF filtering and DC continuity are required in a single stage. The LTCC construction offers superior performance compared to discrete LC networks in terms size and consistency. Consider the power handling limits relative to your application's signal levels. Evaluate the insertion loss characteristics against your link budget requirements. Ensure the package dimensions align with your assembly capabilities.

Part Context

This part belongs to Mini-Circuits' LFCN series of LTCC low-pass filters. These components are designed for general-purpose RF applications requiring reliable frequency selection. The series offers various cutoff frequencies to suit different bandwidth needs. They are widely used in telecommunications and industrial electronics due to their compact form factor and stable electrical performance across temperature variations.

Replacement Considerations

Direct substitutes include other Mini-Circuits LTCC low-pass filters with similar cutoff frequencies and DC pass features. Verify impedance matching and package compatibility before substitution. Cross-reference specifications such as insertion loss and rejection levels to ensure equivalent performance. Consult manufacturer documentation for approved alternative part numbers.