CM1484-02S7

Overview

The onsemi CM1484-02S7 is a second-order low-pass RC (Pi) EMI/RFI filter designed for surface mount applications. It integrates two resistors with a resistance of 100 Ohms and two capacitors with a capacitance of 11 pF within a single compact package. The device utilizes a 5-TSSOP, SC-70-5, or SOT-353 footprint, measuring 2.00 mm in length, 1.25 mm in width, and 1.09 mm in height. This configuration provides effective noise suppression for high-speed data lines.

Feature Summary

• Integrates a complete second-order low-pass RC Pi-filter network for enhanced signal integrity
• Provides combined EMI filtering and electrostatic discharge protection capabilities
• Designed specifically for protecting high-speed data interfaces from electromagnetic interference

Applications

• High-speed USB data line protection
• HDMI interface noise suppression
• General-purpose EMI filtering for portable electronic devices

Procurement Notes

Verify the specific package variant required, as the component is available in multiple pin-compatible footprints including 5-TSSOP, SC-70-5, and SOT-353. Confirm that the 100 Ohm resistor and 11 pF capacitor values align with the target circuit's impedance matching and cutoff frequency requirements before finalizing procurement orders.

Selection Notes

Select this component when a compact solution is needed to simultaneously address EMI emissions and susceptibility on differential or single-ended high-speed lines. The integrated Pi-network topology offers superior attenuation compared to discrete components while minimizing board space. Ensure the operating voltage range exceeds the maximum signal amplitude to prevent leakage issues.

Part Context

This component belongs to onsemi's portfolio of passive filter solutions aimed at maintaining signal quality in consumer electronics. It addresses the growing demand for miniaturized protection circuits in modern devices where space constraints limit the use of discrete filter components. The design supports compliance with stringent electromagnetic compatibility standards.

Replacement Considerations

Direct substitutes must match the 100 Ohm resistance, 11 pF capacitance, and compatible package dimensions such as SC-70-5 or SOT-353. Verify that alternative parts offer equivalent ESD protection levels and insertion loss characteristics to ensure no degradation in signal performance.

FAQ

What is the cutoff frequency characteristic of this filter?

The filter utilizes a Pi-network topology with 100 Ohm resistors and 11 pF capacitors to provide second-order low-pass filtering, effectively attenuating high-frequency noise above its designed cutoff point.

Does this component provide ESD protection?

Yes, the CM1484-02S7 is designed to offer both EMI filtering and electrostatic discharge protection for sensitive data lines.