BFCN-2975+

Overview

The BFCN-2975+ is a surface-mount LTCC bandpass filter manufactured by Mini-Circuits. It operates with a center frequency of 2975 MHz and supports a passband ranging from 2570 MHz to 3440 MHz. The device features a 50 Ohm impedance and exhibits an insertion loss of 2.2 dB. Designed for robust performance, it provides significant attenuation in the stopband, extending from DC up to 7500 MHz. The component utilizes a compact 4-SMD, no-lead package suitable for automated assembly.

Feature Summary

• Utilizes Low-Temperature Co-fired Ceramic (LTCC) technology for high reliability
• Provides precise signal selection within the specified 2570–3440 MHz passband
• Offers strong out-of-band rejection from DC to 7500 MHz
• Designed for direct integration into surface-mount production lines

Applications

• Wireless communication infrastructure systems
• Satellite communication receivers
• Space-qualified RF filtering applications
• Point-to-point microwave links

Procurement Notes

Verify the specific datasheet version before procurement, as specifications may vary between standard commercial grades and space-qualified variants. Confirm that the 4-SMD footprint matches your PCB layout constraints. Ensure compatibility with reflow soldering profiles recommended for LTCC components to maintain electrical integrity and mechanical stability during assembly.

Selection Notes

Select this component when a narrow bandpass characteristic centered at 2.975 GHz is required. The low insertion loss of 2.2 dB makes it suitable for sensitive receiver front-ends. Consider the physical dimensions of the SMD package against available board space. Evaluate the stopband attenuation requirements to ensure sufficient interference suppression for the target application environment.

Part Context

This part belongs to Mini-Circuits' family of ceramic filters designed for RF signal conditioning. These components are engineered to replace bulkier traditional filters while maintaining high Q-factors. The series is widely used in telecommunications and aerospace sectors where size, weight, and power efficiency are critical design parameters.

Replacement Considerations

Public confirmed substitute part numbers: None identified.