QPF4519SR

RF Front End (LNA + PA) Overview

The QPF4519SR is an integrated front-end module (FEM) designed for Wi-Fi 802.11a/n/ac systems operating in the 5.15 GHz to 5.925 GHz frequency range. It features a noise figure of 2 dB, operates at 5 V with 330 mA current consumption, and supports data rates up to 6 Mbps. The device offers gains of 16 dB and 32 dB, with P1dB compression points of -7 dBm, 28 dBm, and 32 dBm. Packaged in a QFN-24 SMD/SMT form factor, it functions within a temperature range of -40 C to +85 C and includes humidity sensitivity.

RF Front End (LNA + PA) Feature Summary

• Integrated front-end module architecture for Wi-Fi 802.11a/n/ac compliance
• Compact form factor with integrated matching components
• Supports 160 MHz bandwidth operation

RF Front End (LNA + PA) Applications

• Wi-Fi access points
• Wireless routers
• Residential gateways

RF Front End (LNA + PA) Procurement Notes

The QPF4519SR is currently listed as an End-of-Life (EOL) product by the manufacturer. Distribution channels indicate that sales are not available in certain regions. Designers should verify component availability and lifecycle status through official manufacturer notifications or authorized distributors before finalizing designs, as this part may no longer be actively produced or stocked.

RF Front End (LNA + PA) Selection Notes

This component is specifically engineered for 5 GHz band Wi-Fi applications requiring integrated transmit and receive path management. Selection should consider the QFN-24 package constraints and the specific gain requirements of 16 dB or 32 dB. Ensure system power supply stability at 5 V and account for the 330 mA operating current in thermal design. Verify compatibility with 802.11a/n/ac protocol stacks.

RF Front End (LNA + PA) Part Context

The QPF4519SR belongs to the QPF4519 series from Qorvo, targeting wireless connectivity solutions. It serves as a specialized RF front-end solution for consumer electronics and networking hardware. The device integrates necessary RF switching and amplification functions into a single compact package, reducing board space compared to discrete component implementations for similar frequency bands.

RF Front End (LNA + PA) Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. As the component is marked End-of-Life, designers must consult official manufacturer resources for valid cross-reference recommendations or next-generation replacements.