UCB04-121-RC

Overview

The UCB04-121-RC is a single-line ferrite bead manufactured by Allied Components International, designed for surface-mount applications in the 0603 package. It exhibits an impedance of 120 ohms at a frequency of 100 MHz and possesses a maximum DC resistance (DCR) of 25 milliohms. This component functions as a passive filter to suppress high-frequency noise in electronic circuits while maintaining low power loss due to its minimal resistive characteristics.

Feature Summary

• Provides effective high-frequency noise suppression through controlled impedance characteristics
• Utilizes a compact 0603 surface-mount footprint for space-constrained designs
• Features low DC resistance to minimize signal attenuation and power dissipation

Applications

• High-speed data line filtering in portable electronics
• Power supply input/output noise reduction in embedded systems
• EMI suppression in consumer device circuit boards

Procurement Notes

Verify the specific impedance tolerance and current rating requirements against your circuit design before ordering. Confirm that the 0603 package dimensions align with your PCB layout constraints. Ensure compatibility with your assembly process regarding soldering temperatures and reflow profiles specified by the manufacturer.

Selection Notes

Select this component when a 120-ohm impedance at 100 MHz is required for noise filtering. The low DCR makes it suitable for sensitive signal lines where voltage drop must be minimized. Consider the 0603 size if board real estate is limited compared to larger packages like 0805 or 1206.

Part Context

This ferrite bead belongs to the UCB04 series from Allied Components International, which offers various impedance values in standard SMD packages. The '121' suffix typically denotes the 120-ohm impedance rating at 100 MHz. It is part of a broader range of passive components used for electromagnetic interference mitigation in modern electronics.

Replacement Considerations

The CIC10J121NC from Samsung is identified as a substitute option. Verify that the replacement matches the 120-ohm impedance at 100 MHz and maintains similar physical dimensions and electrical characteristics to ensure seamless integration.