BFCN-3491+

Overview

The BFCN-3491+ is an LTCC bandpass filter designed for high-performance signal conditioning. It operates within a frequency range of 2790 to 4370 MHz and features a 50Ω impedance. The component utilizes a surface-mount FV1206-7 package style, ensuring compact integration into circuit boards. Its construction employs covered end-termination technology to minimize performance variations caused by parasitic effects, thereby maintaining consistent electrical characteristics across production batches.

Feature Summary

• Utilizes Low-Temperature Co-fired Ceramic (LTCC) technology for reliable miniaturization
• Features covered end-terminations to reduce parasitic effect-induced performance variation
• Provides excellent out-of-band rejection in deep stopbands

Applications

• S-band upconverter assemblies
• Wireless communication infrastructure
• Signal conditioning in RF front-ends

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Mini-Circuits or authorized distributors before finalizing procurement. Ensure that the FV1206-7 package dimensions align with your PCB footprint requirements. Confirm that the operating temperature range meets your system's environmental specifications. Cross-reference the part number suffix to ensure no functional changes have been introduced in newer manufacturing runs.

Selection Notes

Select this component when a compact, high-rejection bandpass filter is required for the S-band spectrum. The LTCC construction offers superior repeatability compared to traditional ceramic filters. Consider the FV1206-7 form factor for space-constrained designs. Evaluate the need for covered terminations if parasitic sensitivity is a critical design constraint. Ensure the 50Ω system impedance matches the surrounding circuitry to maintain optimal signal integrity.

Part Context

This component belongs to Mini-Circuits' BFCN series of LTCC bandpass filters. These components are engineered for applications requiring stable performance in a small surface-mount package. The series leverages advanced ceramic processing to achieve tight tolerance control and high Q-factors. This specific model targets frequencies between 2.79 GHz and 4.37 GHz, fitting into the broader portfolio of microwave passive components offered by the manufacturer.

Replacement Considerations

Consult official Mini-Circuits substitution guides for verified equivalents. Generic cross-references may not match the specific LTCC construction or termination style. Verify that any substitute maintains the same center frequency and bandwidth specifications. Ensure the replacement package is compatible with existing assembly processes.