LFCN-3800D+

Overview

The LFCN-3800D+ is a low-pass ceramic filter manufactured by Mini-Circuits, designed for RF signal conditioning applications. It operates with a 50 Ohm impedance and supports a frequency range from DC to 3.9 GHz. The component features a 'D' suffix variant that enables DC pass-through capability between input and output terminals while providing high isolation to ground. Packaged in a compact 4-SMD, no-lead form factor, this LTCC device offers precise filtering characteristics suitable for high-frequency circuit integration.

Feature Summary

• Provides low-pass filtering functionality within the specified frequency band
• Supports DC pass-through capability due to the 'D' suffix design
• Constructed using LTCC ceramic technology for reliable performance
• Features a compact surface-mount package for efficient board space utilization

Applications

• RF signal conditioning in communication systems
• Integration into microwave circuits requiring low-pass filtering
• Test and measurement equipment signal paths
• Wireless infrastructure components

Procurement Notes

Verify the specific part number LFCN-3800D+ against official Mini-Circuits documentation to confirm the DC pass feature and electrical specifications. Ensure compatibility with your system's impedance requirements of 50 Ohms. Check for any applicable quality assurance standards or military specifications referenced in the datasheet, such as EDR-7684/1A, if required for your application environment.

Selection Notes

Select this component when a low-pass filter with DC continuity is required. The 'D' suffix distinguishes it from standard versions by allowing DC current flow. Confirm the 4-SMD package size fits your PCB layout constraints. Validate that the 3.9 GHz cutoff aligns with your signal processing needs. Consider the LTCC construction for thermal stability in demanding environments.

Part Context

This component belongs to Mini-Circuits' LFCN series of LTCC low-pass filters. These devices are engineered for high-performance RF applications, offering consistent impedance and precise frequency response. The series is known for its reliability in both commercial and industrial settings, utilizing advanced ceramic materials to achieve stable operation across varying conditions.

Replacement Considerations

Consult Mini-Circuits documentation for direct substitutes. Verify that any alternative maintains the 50 Ohm impedance, DC pass capability, and similar cutoff frequency. Ensure package compatibility and electrical performance match the original specifications before implementation.