QPF4551SR

RF Front End (LNA + PA) Overview

The QPF4551SR is a highly integrated RF front-end module designed for 5GHz Wi-Fi 6 (802.11ax) applications. It operates within the 5.15GHz to 5.85GHz frequency range, supporting standard Wi-Fi bands. The device integrates a power amplifier and low-noise amplifier into a single compact package. Key electrical specifications include a transmit gain of up to 32dB and a noise figure of 2.1dB. It utilizes a 16-QFN (2.5x2.5mm) surface-mount package suitable for space-constrained designs.

RF Front End (LNA + PA) Feature Summary

• Integrates power amplifier and low-noise amplifier for simplified circuit design
• Optimized for high-performance 5GHz Wi-Fi 6 connectivity
• Compact footprint supports dense PCB layouts

RF Front End (LNA + PA) Applications

• Wi-Fi 6 access points and routers
• Wireless LAN infrastructure equipment
• High-speed wireless networking devices

RF Front End (LNA + PA) Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for recent Product Change Notifications regarding material or source updates. Ensure handling procedures meet moisture sensitivity level requirements during storage and assembly to prevent damage.

RF Front End (LNA + PA) Selection Notes

Select this module for designs requiring integrated transmission and reception paths in the 5GHz band. Consider the specific frequency coverage relative to regional regulatory requirements. Evaluate thermal management needs based on the integrated PA performance. Compare against legacy models like the QPF4519SR for feature parity and availability status.

RF Front End (LNA + PA) Part Context

This component belongs to Qorvo's wireless innovations portfolio focused on advanced Wi-Fi standards. It represents an evolution from previous generations by supporting higher data rates associated with 802.11ax. The series targets modern networking hardware demanding improved signal integrity and reduced component count.

RF Front End (LNA + PA) Replacement Considerations

The QPF4551TR13 is listed as a manufacturer-recommended alternative. Verify pin compatibility and electrical parameter alignment before substitution. Check current lifecycle status for both parts to ensure long-term supply stability.