KFF6669C

Overview

The KFF6669C is a ceramic feedthrough filter manufactured by Tusonix, a subsidiary of CTS Electronic Components. It is designed for electromagnetic interference (EMI) and radio frequency interference (RFI) suppression in demanding environments. The component supports dual-band operation with an uplink passband range of 1920-1980 MHz and a downlink passband range of 2110-2170 MHz. Key electrical specifications include a maximum insertion loss of -1.50 dB for the uplink band and 2.2 dB for the downlink band. The device operates within a temperature range of -40ºC to +85ºC.

Feature Summary

• Dual-band filtering capability supporting distinct uplink and downlink frequency ranges
• Low insertion loss characteristics optimized for signal integrity preservation
• Robust construction utilizing single-layer and multi-layer ceramic technology
• Designed for high-performance EMI/RFI suppression in EMC applications

Applications

• Wireless communication base station antenna systems
• Electromagnetic compatibility filtering for RF circuits
• Uplink and downlink signal conditioning in cellular infrastructure

Procurement Notes

Verify the specific datasheet version from CTS/Tusonix to confirm exact mechanical dimensions and terminal configurations. Ensure the ordering suffix matches the required termination style. Confirm RoHS compliance status if restricted substances are a constraint for your assembly process. Cross-reference the part number with official distributor catalogs to avoid counterfeit components.

Selection Notes

Select this component when dual-band isolation is required for frequencies around 1.9 GHz and 2.1 GHz. Consider the thermal operating range of -40ºC to +85ºC for environmental suitability. Evaluate the insertion loss specifications against system link budget requirements. Verify that the ceramic package type fits the available panel or chassis mounting space.

Part Context

Tusonix specializes in EMC products, leveraging advanced ceramic technologies to create reliable filtering solutions. This component belongs to their line of feedthrough filters, which are critical for maintaining signal purity in sensitive electronic equipment. The product integrates passive filtering directly into the conductive path, offering compact integration for modern RF designs.

Replacement Considerations

Consult official CTS Tusonix documentation for direct cross-references. No public substitute part numbers are confirmed in the provided source material.