PEMI1QFN/LG,315

Overview

The PEMI1QFN/LG,315 is a single-channel EMI/RFI filter manufactured by NXP USA Inc., belonging to the RC (Pi) network category. It features a low-pass topology with an equivalent resistance of 65 Ohms and a total capacitance of 11 pF. The component is housed in a compact SMD package identified as 3-XQFN (SOT883). Designed for surface-mount assembly, it provides signal integrity protection against electromagnetic interference.

Feature Summary

• Integrates RC Pi-filter topology for effective high-frequency noise attenuation
• Provides integrated ESD protection capabilities alongside filtering functions
• Utilizes a small-footprint 3-XQFN package suitable for space-constrained designs

Applications

• Signal line filtering in portable electronic devices
• EMI suppression on data interfaces requiring ESD protection
• Noise reduction in RF front-end circuits

Procurement Notes

Verify current manufacturing status as some sources indicate this specific variant may be discontinued or subject to tariff implications when shipping to certain regions. Confirm RoHS3 compliance and exact package dimensions against official datasheets before finalizing procurement plans to ensure compatibility with existing PCB layouts.

Selection Notes

Select this component when a combined ESD protection and low-pass filtering solution is required in a minimal footprint. The 65 Ohm resistance and 11 pF capacitance values are optimized for specific impedance matching and cutoff frequency requirements. Ensure the design accommodates the 3-XQFN package constraints and thermal characteristics defined in the manufacturer's documentation.

Part Context

This part belongs to NXP's PEMI1 series of EMI/RFI filters, which integrate passive filtering elements with electrostatic discharge protection structures. The series offers various resistance and capacitance combinations within standardized small packages to address diverse signal integrity challenges in modern electronics without requiring additional discrete components.

Replacement Considerations

Check for direct substitutes such as PEMI1QFN/HE,315 or PEMI1QFN/LR,315 if different electrical parameters are acceptable. Verify pinout compatibility and package dimensions before substituting to avoid PCB redesign efforts.