LFCN-2850D+

Overview

The LFCN-2850D+ is a low-pass filter from the Mini-Circuits LFCN series, utilizing LTCC technology. It features a 3.12 GHz cutoff frequency and operates within a -55°C to +125°C temperature range. The component handles up to 1W of RF input power and provides a typical passband insertion loss between 1.2dB and 1.9dB. It is housed in a compact 4-SMD, no-lead package with a case style of FV1206.

Feature Summary

• Utilizes LTCC construction for robust performance
• Handles high RF input power levels
• Offers wide operating temperature stability

Applications

• RF signal filtering in communication systems
• Harmonic suppression in transmitter chains
• Signal conditioning in test and measurement equipment

Procurement Notes

Verify the specific datasheet version when ordering, as Mini-Circuits may update electrical specifications or mechanical drawings over time. Confirm that the required tape and reel packaging is available if automated assembly is planned, noting that this option may be offered at no extra cost depending on quantity. Ensure the 50 Ohm impedance matches your system design requirements before finalizing procurement.

Selection Notes

Select this component when a sharp cutoff near 3.12 GHz is required for S-band applications. Consider the 1W power handling capability for moderate power environments. The LTCC construction makes it suitable for harsh thermal conditions. Evaluate the insertion loss against system noise budget constraints. Verify the SMD footprint compatibility with existing PCB layouts.

Part Context

This part belongs to the LFCN series of ceramic low-pass filters manufactured by Mini-Circuits. These components are designed for general-purpose RF applications requiring reliable filtering in a small form factor. The series spans various cutoff frequencies, allowing designers to choose appropriate models for different frequency bands while maintaining consistent package styles and performance characteristics across the product line.

Replacement Considerations

Check for direct substitutes within the LFCN series with similar cutoff frequencies. Verify that any alternative component maintains the same 50 Ohm impedance and compatible SMD footprint. Ensure replacement parts meet the same power handling and temperature range specifications.