LFCN-3400D+

Overview

The LFCN-3400D+ is a miniature low-pass filter manufactured by Mini-Circuits, utilizing Low-Temperature Co-Fired Ceramic (LTCC) technology. It features a DC to 3400 MHz passband and a 3.95 GHz cutoff frequency. The component operates at a system impedance of 50 Ohms and exhibits a maximum insertion loss of 1.5 dB. Designed for surface-mount assembly, it utilizes a 4-SMD, no-lead package with dimensions of 3.20 mm in length, 1.60 mm in width, and a maximum height of 0.94 mm. The device supports an operating temperature range from -55°C to +100°C.

Feature Summary

• Constructs signal filtering using LTCC ceramic material for compact integration
• Provides high isolation characteristics within the specified stopband
• Supports surface-mount installation via a leadless SMD footprint

Applications

• Wireless communication systems requiring RF signal conditioning
• Microwave circuit design for frequency selection
• RF front-end modules in portable devices

Procurement Notes

Verify the specific suffix 'D+' against official Mini-Circuits documentation to confirm the exact termination and packaging configuration. Ensure that the selected variant matches the required RoHS compliance status and moisture sensitivity level for your manufacturing process. Cross-reference the manufacturer part number with authorized distributor catalogs to validate current availability and standard delivery timelines before finalizing procurement orders.

Selection Notes

Select this component when a low-profile surface-mount solution is required for frequencies up to 3.4 GHz. The 50 Ohm impedance rating ensures compatibility with standard RF transmission lines. Consider the physical dimensions of the 3216 package for PCB layout constraints. Verify that the thermal operating range meets the environmental requirements of the target application environment.

Part Context

This component belongs to the LFCN series of LTCC low-pass filters produced by Mini-Circuits. The series is designed for applications demanding small form factors and reliable performance in RF and microwave circuits. The LFCN-3400D+ specifically targets designs needing attenuation above 3.95 GHz while maintaining signal integrity within the lower frequency band.

Replacement Considerations

Consult Mini-Circuits official substitution guides or datasheets for verified equivalent part numbers. Do not assume functional interchangeability with other series without confirming electrical specifications and pinout compatibility through official manufacturer documentation.