LFCW-8400+

Overview

The Mini-Circuits LFCW-8400+ is a low-pass filter utilizing Low Temperature Co-fired Ceramic (LTCC) technology. It provides a passband from DC to 8.4 GHz with a 50 Ohm impedance. The component features an SMD surface-mount package, specifically the 0603 (1608 Metric) footprint. Key electrical specifications include a maximum insertion loss of 1.2 dB and high attenuation in the stopband. Designed for robust performance, it operates within a temperature range of -55°C to +100°C.

Feature Summary

• Utilizes LTCC construction for compact size and thermal stability
• Provides effective suppression of frequencies above 8.4 GHz
• Designed for surface-mount integration into RF circuits

Applications

• Wireless communication systems requiring harmonic suppression
• RF test and measurement equipment signal conditioning
• Base station transceiver front-end filtering

Procurement Notes

Verify the specific datasheet version for precise attenuation curves and power handling limits before finalizing designs. Confirm that the 0603 footprint matches the PCB layout requirements. Ensure compatibility with standard reflow soldering profiles for LTCC components. Check for any recent design changes or obsolescence notices from the manufacturer.

Selection Notes

Select this component when a miniature form factor is required for low-pass filtering up to 8.4 GHz. The LTCC technology offers advantages in size reduction compared to traditional ceramic filters. Consider the 1.2 dB insertion loss budget for the application. Evaluate the thermal management needs given the wide operating temperature range.

Part Context

This part belongs to the LFCW series of LTCC low-pass filters from Mini-Circuits. These components are engineered for high-performance RF applications where space constraints are critical. The series typically includes variants with different cutoff frequencies, allowing designers to tailor frequency response characteristics while maintaining consistent packaging and mounting standards.

Replacement Considerations

Direct substitutes may include other Mini-Circuits LTCC low-pass filters with similar cutoff frequencies and package sizes. Verify impedance matching and physical dimensions before substitution. Cross-reference with competitor offerings only if they explicitly match the 0603 footprint and 8.4 GHz specification.