BFHKI-9901+

Overview

The BFHKI-9901+ is a miniature low temperature co-fired ceramic (LTCC) ultra-high stopband rejection band pass filter manufactured by Mini-Circuits. It features an integrated interposer board and shielded construction with a 50Ω impedance. The device operates within an 8.6 to 10.9 GHz passband, providing a center frequency of 9.75 GHz and a bandwidth of 2.3 GHz. Typical insertion loss is specified at 4.6 dB. The component utilizes a 3-SMD, No Lead package suitable for surface-mount applications.

Feature Summary

• Constructed using low temperature co-fired ceramic (LTCC) technology for compact form factor
• Features ultra-high stopband rejection capabilities
• Includes integrated interposer board and shielded construction
• Designed for surface-mount assembly with 50Ω impedance

Applications

• RF front-end filtering in wireless communication systems
• Microwave signal processing applications
• Test and measurement equipment requiring precise bandpass characteristics

Procurement Notes

Verify the specific datasheet revision when ordering, as performance curves may vary between releases. Confirm that the 3-SMD No Lead package aligns with your PCB footprint requirements. Ensure compatibility with standard reflow soldering profiles for LTCC components. Check for any specific handling instructions regarding electrostatic discharge protection during assembly.

Selection Notes

Select this component when high stopband rejection is critical alongside a narrow 2.3 GHz bandwidth centered at 9.75 GHz. The LTCC construction offers thermal stability suitable for demanding environments. Consider the integrated interposer design if space constraints preclude external shielding solutions. Validate insertion loss specifications against system link budget requirements before finalizing the design.

Part Context

This part belongs to the BFHKI series from Mini-Circuits, which specializes in RF, IF, and microwave components ranging from DC to 86 GHz. The series is characterized by surface-mount bandpass filters featuring integrated interposer boards. These components are engineered for consistent performance in high-frequency applications where size and shielding are primary design constraints.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Evaluate alternative Mini-Circuits LTCC filters within the same frequency range only after verifying identical mechanical and electrical interface compatibility.