PEMI1QFN/WK,315

Overview

The PEMI1QFN/WK,315 is a single-channel EMI/RFI filter manufactured by NXP USA Inc., designed for surface-mount applications. It utilizes an RC (Pi) topology to provide second-order low-pass filtering characteristics. The component features integrated Electrostatic Discharge (ESD) protection capabilities. Key electrical parameters include a channel resistance of 200 Ohms and a total capacitance of 13.5 pF. It achieves an attenuation value of 24 dB within the frequency range of 800 MHz to 3 GHz. The device is housed in a compact SOT-883 package, also referred to as SC-101, with physical dimensions of 1.00 mm x 0.60 mm.

Feature Summary

• Integrates ESD protection functionality alongside signal filtering
• Employs RC Pi network topology for second-order low-pass performance
• Designed for high-frequency noise suppression in sensitive circuits

Applications

• High-speed data line protection
• Portable electronic devices
• Communication interface filtering

Procurement Notes

Verify the specific ordering suffix matches the required resistance and capacitance values, as variations exist within the PEMIxQFN family. Confirm that the SOT-883 package footprint aligns with the target PCB layout. Ensure the selected variant includes the necessary ESD protection ratings for the intended application environment. Cross-reference the manufacturer's latest datasheet to confirm current availability and compliance status before finalizing procurement orders.

Selection Notes

Select this component when a compact solution is required for attenuating high-frequency interference on single-ended lines. The 200 Ohm resistance and 13.5 pF capacitance combination offers a specific cutoff frequency suitable for certain digital interfaces. Consider the integrated ESD protection if the circuit is exposed to static discharge risks. Evaluate the thermal and mechanical constraints of the small SOT-883 package during the design phase.

Part Context

This part belongs to the PEMIxQFN series from NXP, which focuses on miniaturized EMI/RFI filtering solutions. The series provides various resistance and capacitance combinations to suit different impedance matching requirements. The WK suffix typically denotes specific passive component values within this standardized QFN platform, distinguishing it from other variants like LR or CR.

Replacement Considerations

Direct substitutes must match the SOT-883 footprint, 200 Ohm resistance, and 13.5 pF capacitance. Verify that alternative components offer comparable ESD protection levels and attenuation characteristics in the 800 MHz to 3 GHz range. Check for pinout compatibility and ensure the replacement maintains the same second-order low-pass filtering behavior.