CSPEMI307AG

Overview

The CSPEMI307AG is a multichannel EMI/ESD filter array manufactured by onsemi. It integrates four low-pass RC (Pi-style) filter channels and four dedicated ESD protection channels, totaling eight functional lines within a single surface-mount package. The device features a 15-pin configuration with a maximum DC resistance of 120 Ω and a capacitance value of 30 µF. Designed for data port applications, it provides bidirectional filtering to control electromagnetic interference both to and from connectors. The unit operates at a maximum temperature of 85 °C and complies with IEC standards.

Feature Summary

• Integrates four Pi-style RC low-pass filters for bidirectional EMI/RFI attenuation on data ports
• Includes four dedicated ESD-only channels specifically designed for USB port protection
• Provides greater than 30 dB attenuation in the 800-2700 MHz frequency range
• Combines signal line filtering and electrostatic discharge protection in a compact SMD package

Applications

• USB port ESD protection and signal integrity enhancement
• Data line filtering for consumer electronics interfaces
• EMI suppression on high-speed digital communication ports

Procurement Notes

Verify the specific suffix 'G' against the official onsemi datasheet to confirm lead-free compliance and RoHS status. Ensure the 15-pin 567BS package code matches your PCB footprint requirements. Confirm that the 120 Ω maximum DC resistance and 30 µF capacitance parameters align with your circuit design specifications before finalizing procurement.

Selection Notes

Select this component when simultaneous EMI filtering and ESD protection are required for USB or similar data interfaces. The integrated Pi-filter topology offers superior attenuation compared to standard capacitors. Verify that the 85 °C operating temperature limit meets your system's thermal environment. Consider the 15-pin form factor for space-constrained designs requiring multiple protected channels.

Part Context

This device belongs to onsemi's portfolio of analog mixed-signal ICs focused on signal integrity and protection. It addresses the growing need for compact, multi-functional components in portable electronics. The integration of filtering and ESD capabilities reduces bill-of-materials count and simplifies layout compared to discrete solutions.

Replacement Considerations

Consult onsemi documentation for direct pin-compatible substitutes within the CSPEMI3 series. Verify that any alternative maintains the 15-pin configuration and equivalent electrical characteristics for both filtering and ESD performance.

FAQ

What is the attenuation performance of the CSPEMI307AG?

The integrated Pi-style filters provide greater than 30 dB attenuation in the 800-2700 MHz range.

How many channels does the CSPEMI307AG offer?

It contains four low-pass filter channels and four dedicated ESD protection channels, totaling eight channels.

Is the filtering bidirectional?

Yes, the Pi-style filters support bidirectional filtering, controlling EMI both to and from the data port connector.