BFCN-5540+

Overview

The BFCN-5540+ is a surface-mount LTCC bandpass filter manufactured by Mini-Circuits. It operates with a center frequency of 5.54 GHz and covers a passband from 4620 MHz to 6640 MHz. The component features a 50 Ohm impedance and utilizes a 4-SMD, no-lead package. Key electrical specifications include a maximum insertion loss of 1.2 dB within the passband and a lower stopband rejection of 22 dB.

Feature Summary

• Utilizes Low-Temperature Co-fired Ceramic (LTCC) technology for compact surface-mount integration
• Provides effective EMI/RFI suppression through defined bandpass filtering characteristics
• Designed for signal conditioning in high-frequency RF applications

Applications

• EMI/RFI suppression circuits
• Signal conditioning modules
• Power line filtering systems

Procurement Notes

Verify the specific datasheet version when sourcing, as manufacturer documentation may be updated. Confirm that the 4-SMD no-lead package dimensions align with your PCB footprint requirements. Ensure the 50 Ohm impedance matches your system design. Check for RoHS compliance status if required by your manufacturing standards. Validate the operating temperature range against your environmental constraints before finalizing procurement.

Selection Notes

Select this component when a fixed center frequency near 5.54 GHz is required for S-band or similar microwave applications. The low profile height of approximately 1.04 mm makes it suitable for space-constrained designs. Consider the 1.2 dB insertion loss impact on overall system gain. The LTCC construction offers stability compared to discrete LC solutions. Ensure the 22 dB stopband rejection meets your interference mitigation needs.

Part Context

This part belongs to Mini-Circuits' family of ceramic filters and signal conditioning components. These devices are engineered for RF and microwave frequencies, often replacing bulky discrete components. The BFCN series specifically targets applications requiring reliable bandpass performance in a small form factor, supporting modern telecommunications and industrial electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Mini-Circuits official documentation for direct replacements or cross-references.