CSPEMI400G

Overview

The CSPEMI400G is a low-pass EMI network filter array manufactured by onsemi. It utilizes RC (Pi) technology to provide signal integrity in high-speed data lines. The device features three channels with specific cutoff frequencies of 77 MHz and 85 MHz. It offers significant attenuation, rated at 30 dB at 1 GHz. The component is housed in a compact surface-mount package measuring 1.96 mm in length and 1.33 mm in width, with a height of 0.26 mm. It includes integrated ESD protection capabilities suitable for SIM card applications.

Feature Summary

• Integrates EMI filtering with electrostatic discharge (ESD) protection functions within a single compact footprint.
• Employs RC Pi-filter topology to effectively suppress electromagnetic interference across multiple channels.
• Provides targeted low-pass filtering characteristics optimized for high-frequency signal line noise reduction.

Applications

• SIM card interface circuits requiring combined EMI suppression and ESD protection
• High-speed data lines needing multi-channel noise filtering
• Portable electronic devices with limited board space for signal conditioning

Procurement Notes

Verify the exact datasheet specifications against the manufacturer's official documentation before integration. Confirm that the package dimensions and pinout align with the target PCB layout. Ensure the operating environment remains within the specified electrical limits for the RC filter structure. Cross-reference the part number with current availability status as distribution channels may vary.

Selection Notes

Select this component when simultaneous EMI filtering and ESD protection are required for SIM interfaces. The small form factor makes it suitable for dense layouts where discrete components would consume excessive area. Evaluate the 77 MHz and 85 MHz cutoff frequencies against the specific data rate requirements of the application to ensure minimal signal degradation while maintaining effective noise suppression.

Part Context

This component belongs to the category of EMI network filter arrays designed for consumer electronics. It addresses the dual challenge of signal integrity and robustness in mobile communication modules. The integration of passive filtering elements with protection diodes simplifies the bill of materials for designers working on compact handheld devices.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer for direct equivalents or updated series replacements if this specific part number is discontinued or unavailable.

FAQ

What is the primary function of the CSPEMI400G?

It serves as a low-pass EMI network filter array that also provides ESD protection for sensitive data lines.

How many channels does this filter array support?

The device supports three independent channels for signal filtering.

What is the physical size of the CSPEMI400G package?

The package dimensions are 1.96 mm in length, 1.33 mm in width, and 0.26 mm in height.