PEMI1QFN/CR,315

Overview

The PEMI1QFN/CR,315 is a single-channel RC (Pi) EMI filter manufactured by NXP USA Inc. It features a resistance of 20 Ohms and a total capacitance of 21pF. The device provides attenuation of 14dB at frequencies between 800MHz and 3GHz. It includes integrated ESD protection and is housed in an SC-101, SOT-883 surface-mount package.

Feature Summary

• Integrates RC Pi-filter topology for effective EMI suppression
• Includes built-in electrostatic discharge (ESD) protection circuitry
• Designed as a second-order low-pass filter network

Applications

• Signal conditioning for high-frequency data lines
• EMI suppression in portable electronic devices
• RFI filtering for communication interfaces

Procurement Notes

Verify the specific suffix CR against the official NXP datasheet to confirm the exact component values and package variant. Ensure compatibility with the target PCB footprint, specifically the SOT-883 form factor. Confirm that the 20 Ohm resistance and 21pF capacitance meet the system's impedance and filtering requirements before finalizing procurement.

Selection Notes

Select this component when a compact, single-channel solution is required for both EMI filtering and ESD protection. The SOT-883 package offers a small footprint suitable for space-constrained designs. Consider the 20 Ohm series resistance impact on signal integrity and the 21pF total capacitance effect on signal rise times for high-speed applications.

Part Context

This part belongs to NXP's family of passive filter networks designed for signal conditioning. These components are typically used to mitigate electromagnetic interference while protecting sensitive inputs from static discharge events. The integration of filtering and protection in a single small package simplifies board layout and reduces overall component count in modern electronic systems.

Replacement Considerations

Check for direct substitutes within the PEMI1QFN series, such as PEMI1QFN/LR,315, which may offer different channel counts or specifications. Verify pinout compatibility and electrical parameters before substituting to ensure no design modifications are required.

FAQ

What is the total capacitance value of the PEMI1QFN/CR,315?

The total capacitance value is 21pF.

Does this component provide ESD protection?

Yes, the PEMI1QFN/CR,315 includes integrated ESD protection capabilities alongside its filtering function.