CDR4002

Overview

The CDR4002 is a ceramic band-pass filter manufactured by RFMi, designed for high-frequency signal processing applications. It operates with a center frequency of 5500 MHz and provides a bandwidth of 700 MHz. The component features a nominal insertion loss of 2.0 dB and a guaranteed attenuation of 10.0 dB at specified stopband frequencies. It is constructed in a surface-mount technology (SMT) package with dimensions of approximately 2.5 mm x 2.77 mm x 1.70 mm. The device is rated for operation within a temperature range of 0°C to 40°C and maintains a 50-ohm impedance characteristic suitable for standard RF systems.

Feature Summary

• Utilizes ceramic construction for stable frequency control in transmitter circuits
• Optimized for Wi-Fi 5 and Wi-Fi 6 frequency bands
• Designed for surface-mount integration to support low power consumption

Applications

• Wi-Fi 5 network equipment
• Wi-Fi 6 networking devices
• RF transmitters requiring precise frequency control

Procurement Notes

Verify the specific datasheet version and moisture sensitivity level before assembly. Confirm that the operating environment stays within the specified 0°C to 40°C range and humidity limits. Ensure compatibility with the target PCB footprint dimensions of 2.5mm x 2.77mm. Cross-reference the center frequency and bandwidth requirements against the system design specifications to ensure proper signal filtering performance.

Selection Notes

Select this component when a fixed 5500 MHz center frequency is required for wireless LAN applications. The 700 MHz bandwidth supports modern Wi-Fi standards. Consider the SMT package size for space-constrained designs. Verify that the 2.0 dB insertion loss meets the system link budget requirements. Ensure the manufacturer's reliability data aligns with the intended operational lifespan.

Part Context

This part belongs to RFMi's line of ceramic filters and resonators, which serve as frequency control elements in transmitters. The series includes single-port and dual-port types designed for stable signal processing. These components are engineered to provide reliable performance in networking applications where consistent frequency stability is critical for maintaining signal integrity.

Replacement Considerations

Check for direct substitutes such as the CDR4006 if a different center frequency around 6.24 GHz is acceptable. Verify that any replacement matches the 50-ohm impedance and similar physical dimensions. Ensure the alternative component supports the same Wi-Fi 5/6 application requirements and thermal operating conditions.