AFV121KGSR5

RF FETs, MOSFETs Overview

The AFV121KGSR5 is a high ruggedness N-channel enhancement-mode LDMOS transistor designed for pulse applications in the 960–1215 MHz frequency range. It delivers up to 1000 W peak output power with a drain efficiency exceeding 55% at 50 Vdc operation. The device features internal input and output matching, enabling broadband performance and simplified circuit design. It supports single-ended, push-pull, or quadrature configurations and includes integrated ESD protection.

RF FETs, MOSFETs Feature Summary

• Internally matched for broadband operation across 960–1215 MHz
• High ruggedness handling greater than 20:1 VSWR
• Integrated ESD protection with extended negative voltage range

RF FETs, MOSFETs Applications

• Distance Measuring Equipment (DME)
• Secondary Radars and Mode S ELM Interrogators
• Air Traffic Control Transponders including TCAS and ADS-B

RF FETs, MOSFETs Procurement Notes

Verify the specific suffix 'R5' confirms the tape and reel packaging configuration containing 50 units on a 56 mm wide reel. Confirm the 'GS' designation corresponds to the NI-1230GS-4L gull wing package variant. Ensure compatibility with the specified thermal management requirements for the Airfast package structure during assembly.

RF FETs, MOSFETs Selection Notes

Select this component for high-power pulse applications requiring robust load mismatch tolerance. The internal matching simplifies broadband design compared to unmatched counterparts. Verify that the system can accommodate the required 50 Vdc supply and thermal dissipation limits for the intended duty cycle and junction temperature constraints.

RF FETs, MOSFETs Part Context

This part belongs to the Freescale/NXP Airfast RF Power LDMOS transistor family. These devices utilize advanced lateral MOSFET technology optimized for high power density and reliability in demanding RF environments. The product line targets aerospace, defense, and communication infrastructure markets requiring high peak power capabilities.

RF FETs, MOSFETs Replacement Considerations

The datasheet lists AFV121KH and AFV121KHS as related variants within the same family. Differences primarily involve package style and ordering suffixes rather than core electrical function. Verify pinout and mechanical dimensions when substituting between KH, KHS, and KGSR5 variants.

RF FETs, MOSFETs FAQ

What is the maximum VSWR the device can withstand?

The device is qualified to handle greater than 20:1 VSWR at all phase angles without degradation under specified pulse conditions.

Can this transistor be used in continuous wave (CW) applications?

No, the datasheet specifies these devices are designed for pulse applications, such as those found in DME and radar systems, with defined duty cycles.

What configuration options are supported by this device?

The device can be utilized in single-ended, push-pull, or quadrature configurations depending on the system design requirements.