HHM2909C4

RF Directional Couplers Overview

The HHM2909C4 is a multilayer directional coupler manufactured by TDK Corporation. It operates within two distinct frequency bands: 777MHz to 925MHz and 1.71GHz to 1.91GHz. The component provides a coupling factor of 21.4dB with a maximum insertion loss of 0.6dB. It utilizes a 0402 (1005 Metric) surface-mount package, suitable for compact RF circuit designs.

RF Directional Couplers Feature Summary

• Multilayer construction for reliable signal directionality
• Dual-band operation covering 777-925MHz and 1.71-1.91GHz ranges
• Standard coupling factor of 21.4dB for precise signal monitoring

RF Directional Couplers Applications

• General purpose RF signal monitoring
• Directional power measurement in communication systems
• Signal sampling in mobile device circuits

RF Directional Couplers Procurement Notes

Verify the specific suffix designation against official TDK documentation to ensure correct frequency band selection and tolerance specifications. Confirm that the 0402 package dimensions align with PCB layout requirements. Cross-reference the coupling factor and insertion loss values with the latest datasheet to guarantee performance compliance for the intended application environment.

RF Directional Couplers Selection Notes

Select this component when dual-band coverage at 777-925MHz and 1.71-1.91GHz is required. The 21.4dB coupling factor suits applications needing moderate signal attenuation for monitoring purposes. Ensure the 0402 footprint fits the design constraints. Consider the low insertion loss for minimal impact on signal integrity in high-frequency paths.

RF Directional Couplers Part Context

This part belongs to TDK's HHM29xxxx series of RF directional couplers. The series offers various coupling characteristics and frequency ranges tailored for different RF applications. The HHM2909C4 specifically addresses needs for compact, multilayer components in general-purpose RF environments.

RF Directional Couplers Replacement Considerations

Consult TDK's official substitution guide for compatible parts within the HHM29xxxx series. Verify matching frequency ranges and coupling factors before replacing.