CM1443-04CP

Overview

The CM1443-04CP is a four-channel EMI filter array with integrated ESD protection, manufactured by onsemi. It utilizes an RC (PI) network topology to provide signal line filtering and transient suppression. The device operates at a maximum voltage of 2.5V and features a plastic package construction. Designed for surface mount installation, it offers compact footprint solutions for high-density circuit boards. The component serves as a protective interface for data lines, mitigating electromagnetic interference and electrostatic discharge events in sensitive electronic applications.

Feature Summary

• Integrates four independent filtering channels within a single compact package
• Provides combined EMI/RFI attenuation and electrostatic discharge protection
• Utilizes RC PI-network architecture for effective signal line conditioning

Applications

• Data line protection in consumer electronics
• ESD mitigation for high-speed communication interfaces
• EMI filtering for portable devices and mobile hardware

Procurement Notes

Verify the current lifecycle status before procurement, as distribution sources indicate this specific part number may be obsolete or end-of-life. Confirm availability through authorized distributors or secondary market suppliers like Rochester Electronics. Ensure the selected variant matches the required 10-WFBGA or WLCSP package type and that the 2.5V operating limit aligns with your system design specifications.

Selection Notes

Select this component when designing circuits requiring simultaneous EMI filtering and ESD protection for low-voltage data lines. The four-channel configuration allows for efficient space utilization in dense layouts. Consider the 2.5V maximum rating and the specific impedance characteristics of the RC PI-network to ensure compatibility with the target signal integrity requirements and power supply constraints of the application.

Part Context

This component belongs to onsemi's portfolio of passive and protection devices, specifically within the EMI/RFI filter category. It addresses the growing need for robust signal integrity management in modern electronics. The integration of filtering and protection functions reduces the bill of materials and simplifies board layout compared to using discrete components for each function.

Replacement Considerations

Public records indicate this part number is listed as obsolete. Engineers should consult official onsemi documentation or authorized distributors for verified substitute part numbers or next-generation replacements that maintain equivalent electrical characteristics and pin configurations.