CM1623-04DE

Overview

The CM1623-04DE is a 4-channel EMI filter array with integrated ESD protection designed for SIM card applications. It utilizes a Pi-style capacitor-resistor-capacitor (C-R-C) network topology to provide second-order low-pass filtering. The device incorporates resistance values of 47 Ohms and 100 Ohms alongside capacitance of 20 pF per channel. It is housed in an 8-pin UFDFN package with an exposed pad, offering compact integration for high-speed data lines requiring noise suppression and electrostatic discharge mitigation.

Feature Summary

• Integrates four independent channels of EMI filtering within a single compact footprint
• Combines passive RC filtering with built-in electrostatic discharge protection capabilities
• Employs a Pi-style C-R-C network architecture for effective noise attenuation

Applications

• SIM card interface circuits
• High-speed data line noise suppression
• Portable electronic devices requiring ESD protection

Procurement Notes

Verify the specific suffix 'DE' corresponds to the required tape-and-reel packaging configuration and lead-free status as defined by onsemi. Confirm that the 8-UFDFN exposed pad package matches your PCB thermal and mechanical design requirements. Ensure compatibility with your assembly process regarding the component's moisture sensitivity level and reflow profile specifications found in the official datasheet.

Selection Notes

Select this component when simultaneous EMI suppression and ESD protection are required for multiple signal lines in space-constrained designs. The integrated nature of the filter and protector reduces bill-of-materials count compared to discrete solutions. Consider the specific resistance and capacitance values inherent to the CM1623-04DE to ensure they meet the impedance and cutoff frequency requirements of the target application without additional external components.

Part Context

This part belongs to onsemi's portfolio of EMI/RFI filters and discrete protection devices. It is categorized under RC networks specifically engineered for signal integrity enhancement. The device addresses the growing need for robust noise filtering in mobile and computing interfaces where space is limited and signal purity is critical for reliable operation of peripheral connections like SIM modules.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternatives from other manufacturers, ensuring matching channel count, package type, and electrical characteristics.