A2T21S161W12SR3

RF FETs, MOSFETs Overview

The A2T21S161W12SR3 is a discontinued Airfast RF power LDMOS transistor designed for cellular base station applications requiring wide instantaneous bandwidth. It operates within the 2110 to 2200 MHz frequency range and delivers 38 W average output power at 28 Vdc. Typical single-carrier W-CDMA performance at 2100 MHz includes 18.7 dB gain, 34.2% drain efficiency, -32.3 dBc ACPR, and -21 dB input return loss.

RF FETs, MOSFETs Feature Summary

• Designed for very wide instantaneous bandwidth capability in cellular base stations
• Utilizes Airfast packaging technology for high power density
• Optimized for 28 V operation with high average power output

RF FETs, MOSFETs Applications

• Cellular base station transmitters
• Wideband RF power amplification
• 2110-2200 MHz frequency band operations

RF FETs, MOSFETs Procurement Notes

This component is officially archived and no longer manufactured by NXP USA Inc. Specifications are provided for historical reference only. Verify current availability through authorized distributors or secondary markets, as standard supply channels do not stock new units. Confirm package integrity and authenticity when sourcing from non-OEM suppliers due to discontinuation status.

RF FETs, MOSFETs Selection Notes

Engineers should evaluate replacement options immediately as this part is discontinued. Consider newer NXP Airfast series transistors or equivalent third-party components that match the 28 V, 38 W, and 2110-2200 MHz specifications. Ensure thermal management and biasing circuits are compatible with alternative devices before finalizing design changes.

RF FETs, MOSFETs Part Context

The A2T21S161W12SR3 belongs to NXP's Airfast RF power LDMOS transistor family, specifically tailored for wireless infrastructure. The 'R3' suffix typically denotes tape-and-reel packaging for automated assembly, though specific packaging details for this discontinued variant should be verified against original datasheets if available.

RF FETs, MOSFETs Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided documentation. Users must consult NXP support or technical literature for direct replacements within the Airfast portfolio that meet identical electrical and mechanical requirements.