BFHKI-6251+

Overview

The BFHKI-6251+ is a miniature low temperature co-fired ceramic (LTCC) ultra-high stopband rejection band pass filter. It features a passband from 5.35 to 6.7 GHz with a center frequency of approximately 6 GHz and a bandwidth of 1.35 GHz. The component operates at a 50 Ohm impedance and exhibits typical insertion loss of 5 dB. It provides wide stopband rejection, typically 50 dB up to 15.5 GHz. The device utilizes shielded construction and includes an integrated interposer board for surface-mount integration.

Feature Summary

• Ultra-high stopband rejection capability extending up to 15.5 GHz
• Shielded construction for electromagnetic isolation
• Integrated interposer board for simplified surface-mount assembly

Applications

• Wireless communication systems requiring specific band filtering
• Test and measurement equipment RF signal chains
• Radar and electronic warfare navigation systems

Procurement Notes

Verify the complete part number including suffixes against official Mini-Circuits documentation to ensure correct specifications. Confirm that the LTCC package type and pin configuration match the target PCB layout requirements. Cross-reference the datasheet revision date to validate current performance parameters before finalizing procurement decisions.

Selection Notes

Select this component when high stopband rejection is critical within the 5.35 to 6.7 GHz range. The integrated interposer design simplifies layout compared to discrete filters. Ensure the system impedance matches the 50 Ohm specification. Consider the thermal properties of the LTCC material if operating in high-power environments.

Part Context

This component belongs to the BFHKI series of surface-mount bandpass filters manufactured by Mini-Circuits. The series is characterized by its use of low temperature co-fired ceramic technology, which allows for compact form factors and robust performance in microwave applications. These filters are designed for integration into modern RF front-end modules.

Replacement Considerations

Consult Mini-Circuits official substitution guides for verified alternatives. Generic cross-references may not preserve the specific stopband rejection characteristics or the integrated interposer board functionality required for proper circuit operation.