LFCG-1700+

Overview

The LFCG-1700+ is a low-pass filter manufactured by Mini-Circuits, designed for RF signal conditioning. It features a passband from DC to 1700 MHz and operates with a 50Ω impedance. The component utilizes Low Temperature Co-fired Ceramic (LTCC) technology and is housed in a compact GE0805C-2 package, equivalent to the 0805 surface-mount footprint. Key electrical specifications include a maximum insertion loss of 0.9 dB within the passband and a cutoff frequency defined at 1700 MHz.

Feature Summary

• Utilizes LTCC construction for reliable performance in compact designs
• Provides effective signal filtering with rejection up to 50dB
• Supports wide frequency range from DC to 6100MHz operational capability

Applications

• RF front-end filtering in communication systems
• Harmonic suppression in transmitter circuits
• Signal conditioning in test and measurement equipment

Procurement Notes

Verify the specific datasheet version for the LFCG-1700+ to confirm exact insertion loss and return loss values at your operating frequency. Ensure the PCB layout accommodates the GE0805C-2 footprint dimensions. Confirm that the 50Ω system impedance matches your circuit design requirements before integration.

Selection Notes

Select this component when a small form factor is required for low-pass filtering applications below 1700 MHz. The LTCC technology offers stability compared to other ceramic types. Consider the 0.9 dB insertion loss specification if signal integrity is critical. The 50Ω impedance makes it suitable for standard RF interfaces without additional matching networks.

Part Context

This part belongs to the LFCG series of miniature low-pass filters from Mini-Circuits. The series is characterized by its tiny 0805 size and high rejection capabilities. These filters are engineered for space-constrained environments where standard through-hole or larger surface-mount components cannot fit. The '+' suffix typically indicates lead-free compliance in Mini-Circuits nomenclature.

Replacement Considerations

Check for direct substitutes within the LFCG series with different cutoff frequencies if the 1700 MHz limit is insufficient. Verify pinout compatibility if replacing with similar LTCC filters from other manufacturers. Ensure the replacement maintains the 50Ω impedance and 0805 footprint to avoid PCB redesign.