CM1457-04CP

Overview

The CM1457-04CP is a Praetorian III EMI filter array with ESD protection, integrating four L-C filters in a CSP form factor with 0.40mm pitch. It features component values of 6pF-35nH–4.7pH–35nH–1.8pF per channel. The cut-off frequency at -3dB attenuation is 300MHz, supporting data rates up to 160Mbps. It provides greater than -35dB attenuation over the 800MHz to 2.7GHz frequency range and offers ±15kV ESD protection (IEC 61000-4-2, contact discharge) at external pins.

Feature Summary

• Integrates four L-C EMI filter channels within a compact Chip Scale Package (CSP) utilizing 0.40mm pitch for low parasitic inductance.
• Provides robust electrostatic discharge protection rated at ±15kV via IEC 61000-4-2 contact discharge standards.
• Delivers high attenuation performance exceeding -35dB across the 800MHz to 2.7GHz spectrum while maintaining signal integrity for high-speed data lines.

Applications

• EMI filtering for data ports in mobile handsets and notebook computers
• Protection for LCD and camera data lines in mobile devices
• I/O port protection for PDAs and handheld PCs

Procurement Notes

Verify current availability status as some distributors indicate planned obsolescence or end-of-life status for this specific part number. Confirm RoHS compliance and OptiGuard coating requirements during assembly. Ensure ordering suffixes match exact package specifications. Contact manufacturer directly for lead time verification and final procurement authorization.

Selection Notes

Select this component when designing circuits requiring integrated EMI suppression and ESD protection for high-speed serial data interfaces. The 300MHz cutoff frequency suits applications with data rates up to 160Mbps. Consider the CSP footprint constraints and 0.40mm pitch compatibility with PCB layout tools. Evaluate thermal management needs relative to the operating temperature range specified in the datasheet.

Part Context

This device belongs to onsemi's Praetorian III family of EMI filter arrays. It shares architectural similarities with other models like the CM1457-06CP and CM1457-08CP, differing primarily in channel count. The series utilizes inductor-based L-C topologies optimized for mobile electronics where space and signal integrity are critical constraints.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Note that the CM1452-04CP is not a direct functional equivalent due to different cutoff frequencies (148 MHz vs 300 MHz). Verify pinout and electrical characteristics before considering any alternative components from the same manufacturer.