AFV121KHR5 is a 50V Airfast® RF Power LDMOS transistor from NXP
AFV121KHR5 is a 50V Airfast® RF Power LDMOS transistor from NXP Semiconductors, optimized for 960-1215 MHz broadband pulse applications with 1000W peak power output, featuring high ruggedness, integrated protection, and easy system integration.
Core Functions
- High‑Power RF Pulse Amplification: Delivers 1000W peak power across 960-1215 MHz, ideal for long‑pulse, high‑duty‑cycle scenarios (e.g., Mode S ELM) with >50% efficiency and 18 dB typical gain for avionics RF chains.
- Broadband Pre‑matched I/O: Internally pre‑matched input/output enables plug‑and‑play broadband operation, reducing external matching complexity and accelerating design‑in.
- Flexible System Configuration: Supports single‑ended, push‑pull, or quadrature topologies to meet diverse power and linearity requirements of avionics transmitters.
- Robust Power Handling: Withstands VSWR >20:1 for unmatched load resilience; qualified for 50V VDD operation with integrated ESD protection and extended negative voltage range for reliable Class C biasing and gate pulsing.
- Simplified Characterization: Provides series‑equivalent large‑signal impedance parameters for straightforward load‑pull and system simulation.
- Long‑Term Supply Assurance: Covered by NXP’s Product Longevity Program, ensuring 15+ years of availability for avionics and defense programs.
- Compliance & Reliability: RoHS/REACH‑SVHC compliant with a halogen‑free design for global regulatory compliance.
Key Applications
- Air Traffic Control (ATC) Secondary Surveillance: Ground‑based Mode S ELM interrogators for advanced ATC identification and tracking.
- Distance Measuring Equipment (DME): Air‑to‑ground range‑finding transceivers for precise aircraft navigation.
- Mode S Transponders:
- Traffic Alert and Collision Avoidance System (TCAS) for airborne collision prevention
- Automatic Dependent Surveillance‑Broadcast (ADS‑B) systems, including 1090 Extended Squitter (1090 ES) and Universal Access Transceiver (UAT) ground/airborne transceivers
- Avionics Transponder Infrastructure: High‑power ground stations and airborne transceivers for seamless air traffic management and surveillance interoperability.
Typical System Implementation
- Driver Recommendation: Pair with MRFE6VS25GN (25W) for a complete 25W‑to‑1000W amplifier chain, ensuring optimal gain flatness and efficiency.
- Package: Air‑cavity ceramic NI‑1230‑4S (CFM4F) for thermal stability and high‑power thermal dissipation in harsh avionics environments.
- Key Parameters: 50V VDD operation, 1000W peak power, 960-1215 MHz bandwidth, >50% efficiency, 18 dB gain, VSWR >20:1 ruggedness
