PEMI8QFN/LT,132

Overview

The PEMI8QFN/LT,132 is an EMI/RFI filter component manufactured by NXP USA Inc. It functions as a second-order low-pass RC (Pi) network designed for signal integrity protection. The device integrates eight channels of filtering within a single package. Key electrical parameters include a resistance value of 65 Ohms and a total capacitance of 23 picofarads per channel. It operates reliably across a temperature range of -40°C to 85°C. The component utilizes a surface-mount 16-XFDFN package with an exposed pad for thermal management and secure mounting.

Feature Summary

• Integrates eight independent low-pass filter channels in a compact footprint
• Utilizes RC Pi-network topology for effective high-frequency noise attenuation
• Features an exposed pad design to enhance thermal dissipation and mechanical stability

Applications

• High-speed digital interface signal line protection
• EMI suppression in embedded systems
• RFI filtering for sensitive analog or mixed-signal circuits

Procurement Notes

Verify the exact suffix LT against official NXP documentation to confirm the specific capacitance value of 23pF. Ensure the XFDFN package dimensions match the target PCB layout. Confirm the operating temperature range requirements align with the specified -40°C to 85°C limit before finalizing procurement decisions.

Selection Notes

Select this component when multi-channel EMI filtering is required without consuming excessive board space. The integrated RC structure simplifies design compared to discrete components. Consider the 65-ohm impedance impact on signal rise times when choosing this filter for high-speed data lines.

Part Context

This part belongs to NXP's family of passive EMI/RFI filters. Similar variants like PEMI8QFN/LG,132 offer different capacitance values (11pF), while PEMI4QFN/LK,132 provides four channels. These components are distinct from active ICs or processors, serving purely as passive signal conditioning elements for noise reduction.

Replacement Considerations

Direct substitutes may include PEMI8QFN/LG,132 if lower capacitance is acceptable, or discrete RC networks matching the 65 Ohm and 23 pF specifications. Verify pin compatibility and thermal performance when considering alternative packages.