PEMI1QFN/HK,315

Overview

The PEMI1QFN/HK,315 is a single-channel passive EMI/RFI filter manufactured by NXP USA Inc. It utilizes an RC Pi network topology to provide signal conditioning and noise suppression. The component features a resistance value of 45 Ohms and a total capacitance of 13.5 pF. It is housed in a compact SOT-883 (SC-101) surface-mount package designed for space-constrained applications. This device functions as a second-order low-pass filter intended for high-frequency interference mitigation.

Feature Summary

• Integrates an RC Pi network structure for effective electromagnetic interference attenuation
• Provides dedicated electrostatic discharge protection capabilities within the filter architecture
• Utilizes a small-footprint SOT-883 surface-mount package for dense board layouts

Applications

• High-speed data line filtering in portable electronic devices
• Signal conditioning for USB or similar interface ports requiring ESD protection
• Noise suppression in automotive infotainment system interconnects

Procurement Notes

Verify the specific suffix HK against official NXP documentation to confirm the exact electrical parameters, as suffixes often denote distinct resistance and capacitance values within the same package family. Ensure the source document explicitly lists the 45 Ohm and 13.5 pF specifications for this exact part number before procurement to avoid substitution errors with other variants in the PEMI1QFN series.

Selection Notes

Select this component when a combined solution for EMI filtering and ESD protection is required on a single channel. The choice depends on the need for a low-profile SOT-883 footprint and specific impedance matching characteristics defined by the 45 Ohm resistor and 13.5 pF capacitor values. Confirm that the operating frequency range aligns with the cutoff frequency determined by these passive components.

Part Context

This part belongs to the NXP PEMI1QFN series of integrated EMI/RFI filters. These components are designed to replace discrete R, C, and ferrite bead networks, simplifying the bill of materials. The series offers various configurations with different resistance and capacitance values, packaged in standardized small outline transistor packages suitable for automated assembly processes.

Replacement Considerations

Direct substitutes include other parts from the NXP PEMI1QFN family with identical packaging but potentially different electrical values, such as PEMI1QFN/RM,315 or PEMI1QFN/LE,315, provided the circuit design accommodates their specific resistance and capacitance ratings.