PEMI8QFN/CR,132

Overview

The PEMI8QFN/CR,132 is an integrated EMI/RFI filter manufactured by NXP USA Inc., designed for surface-mount applications. It utilizes a Pi-network RC topology to provide second-order low-pass filtering characteristics across eight independent channels. The component features a resistance value of 20 Ohms and a total capacitance of 21 picofarads per channel. It is housed in a compact 16-XFDFN package with an exposed pad, facilitating efficient thermal management and space-saving integration into high-density electronic circuits requiring signal integrity protection.

Feature Summary

• Integrates eight independent filtering channels within a single compact surface-mount package
• Employs a Pi-network RC topology to achieve second-order low-pass attenuation characteristics
• Designed specifically for effective suppression of electromagnetic and radio frequency interference

Applications

• High-speed digital signal line protection in consumer electronics
• EMI mitigation in portable computing devices and mobile communication hardware
• Signal conditioning for data interfaces requiring strict noise immunity standards

Procurement Notes

Verify the specific suffix designation (CR) against official NXP documentation to confirm exact electrical tolerances and tape-and-reel specifications. Ensure compatibility with standard reflow soldering profiles for XFDFN packages. Cross-reference part numbers with authorized distributors to avoid counterfeit components. Confirm that the 20-ohm resistance and 21-pF capacitance values align with your circuit's impedance requirements before finalizing procurement orders.

Selection Notes

Select this component when designing circuits that require multi-channel EMI filtering without occupying excessive board real estate. The 20-ohm resistance offers a balance between insertion loss and signal integrity preservation for moderate-speed signals. Consider the 21-picofarad total capacitance impact on signal rise times. This device is suitable for applications where multiple lines require identical filtering characteristics simultaneously.

Part Context

This component belongs to NXP's family of passive EMI/RFI filters. Similar variants exist with different packaging or tolerance specifications, such as the PEMI8QFN/RG,132. These filters are engineered to replace discrete resistor-capacitor networks, reducing assembly complexity and improving consistency in mass production environments for noise-sensitive digital systems.

Replacement Considerations

Direct substitutes include other NXP PEMI8QFN series variants with matching pin configurations. Verify that alternative parts maintain the same 20-ohm resistance and 21-pF capacitance values. Ensure the replacement package matches the 16-XFDFN footprint to avoid PCB redesign efforts.