PEMI1QFN/LP,315

Overview

The PEMI1QFN/LP,315 is a passive RC Pi filter network manufactured by NXP USA Inc. It functions as a second-order low-pass EMI/RFI filter with one channel. The component features an internal resistance of 65 Ohms and a total capacitance of 18.5 pF. It is housed in a compact SOT-883 (SC-101) surface-mount package measuring 1.00mm x 0.75mm x 0.45mm. Designed for signal conditioning, it provides effective noise suppression in high-frequency applications while maintaining a small footprint suitable for dense PCB layouts.

Feature Summary

• Integrates a 65 Ohm resistor and 18.5 pF capacitor array into a single monolithic structure
• Provides second-order low-pass filtering characteristics for enhanced attenuation
• Includes built-in ESD protection capabilities within the passive network design

Applications

• Signal line EMI suppression in portable electronic devices
• RFI filtering for high-speed data interfaces
• Noise reduction in automotive infotainment systems

Procurement Notes

Verify the specific suffix LP against the official NXP datasheet to confirm the 65 Ohm resistance value. Ensure the SOT-883 package dimensions match your PCB footprint requirements. Confirm RoHS compliance status if required by your manufacturing standards. Check for any specific handling precautions related to the small form factor during assembly.

Selection Notes

Select this component when a compact, integrated solution for second-order low-pass filtering is required. The fixed 65 Ohm resistance and 18.5 pF capacitance are optimized for specific impedance matching and cutoff frequency needs. Consider the SOT-883 package size constraints and thermal dissipation limits relative to your application's power environment.

Part Context

This part belongs to NXP's family of passive RC filter networks designed for EMI/RFI suppression. These components integrate resistors and capacitors to replace discrete components, saving board space. The LP variant specifically denotes the 65 Ohm resistance configuration within the QFN series, distinguishing it from other resistance values like 100 or 200 Ohms available in similar packages.

Replacement Considerations

Direct substitutes include PEMI1QFN/RM,315 (100 Ohm/16pF) and PEMI1QFN/WP,315 (200 Ohm/18.5pF) if impedance adjustments are acceptable. Verify that the alternative part's capacitance and resistance values meet the circuit's filtering requirements before substitution.