CDR4004

Overview

The RFMi CDR4004 is a ceramic bandpass filter designed for wireless communication applications. It operates with a center frequency of 5.697 GHz and features a bandwidth of 360 MHz. The component maintains a standard impedance of 50 Ohms and utilizes a nonstandard package configuration. This surface-mount device is engineered to provide precise signal filtering within the specified radio frequency range, supporting high-performance RF circuitry in modern digital and wireless systems.

Feature Summary

• Provides selective bandpass filtering at 5.697 GHz
• Maintains 50 Ohm system impedance compatibility
• Engineered for low-power wireless communications

Applications

• Wireless LAN modules operating in the 5.8 GHz band
• Wi-Fi 5 and Wi-Fi 6 infrastructure equipment
• Point-to-point microwave communication links
• Industrial, Scientific, and Medical (ISM) radio devices

Procurement Notes

Verify the specific package variant against the official datasheet, as the CDR4004 may utilize nonstandard footprints distinct from common gull-wing SMD packages. Confirm RoHS compliance status through the manufacturer's current documentation before integration. Ensure that the 5.697 GHz center frequency aligns precisely with the target application's regulatory requirements and channel planning specifications.

Selection Notes

Select this component when a fixed 360 MHz bandwidth is required around the 5.697 GHz center frequency. The ceramic construction offers stability suitable for compact wireless designs. Evaluate the nonstandard package dimensions during PCB layout to ensure adequate clearance and thermal management. Compare insertion loss and rejection characteristics against alternative SAW or BAW filters if stricter out-of-band suppression is necessary.

Part Context

RFMi, an Akoustis brand, specializes in RF components utilizing SAW, crystal, and ceramic technologies. The CDR4004 belongs to their ceramic filter portfolio, targeting digital and wireless markets. These components serve as critical frequency-selective elements in transmitters and receivers, ensuring signal integrity in crowded spectrum environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify mechanical footprint compatibility and electrical performance parameters with potential alternatives before substitution.