1011GN-1200VEL

Overview

The Microchip Technology 1011GN-1200V/VEL is a common source, Class AB GaN on SiC HEMT transistor designed for L-Band avionics applications. It operates across the 1030 to 1090 MHz frequency band and provides over 18.5 dB gain with 1200 Watts of pulsed RF output power at a 32us, 2% duty cycle pulse format. The device features an internal pre-match network and utilizes gold metallization for high reliability. Key electrical characteristics include a drain-source voltage (VDSS) of 150 V, a maximum operating junction temperature of +200°C, and a typical drain efficiency of 75% under specified bias conditions.

Feature Summary

• Internally matched common source architecture optimized for minimal external circuit complexity
• Gallium Nitride on Silicon Carbide (GaN on SiC) construction ensuring superior ruggedness
• Gold metallization implementation to maximize component reliability and longevity

Applications

• L-Band Avionics systems operating within the 1030 to 1090 MHz spectrum
• Mode-S ELM pulse format transmission
• Air traffic control radar transponder (ATCRBS) signal generation

Procurement Notes

Verify the specific package variant required during procurement, as the datasheet distinguishes between the standard 55-Q03 and the VEL 55-Q03P packaged devices. Confirm that the application environment strictly adheres to the absolute maximum ratings, particularly the 150 V drain-source voltage limit and the +200°C junction temperature threshold. Ensure the final assembly process accounts for the thermal resistance specifications provided in the official documentation to maintain operational integrity.

Selection Notes

Select this component when designing high-power pulsed RF amplifiers for L-Band avionics requiring precise Mode-S ELM compliance. The internal matching network simplifies impedance design for the 1030-1090 MHz range. Evaluate the 150 V breakdown capability against system supply voltages and ensure the cooling solution can manage the 0.25 °C/W thermal resistance under the specified 32us, 2% duty cycle conditions to prevent thermal failure.

Part Context

This device belongs to the family of Gallium Nitride High Electron Mobility Transistors (HEMTs) manufactured by Microsemi. These components are engineered specifically for demanding aerospace and defense environments where high power density and radiation tolerance are critical. The technology leverages the wide bandgap properties of GaN on SiC substrates to achieve performance levels unattainable with traditional silicon-based technologies.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers must consult Microsemi technical support directly for validated cross-reference options or alternative device recommendations that meet identical electrical and mechanical specifications.

FAQ

What is the maximum allowable drain-source voltage for the 1011GN-1200V/VEL?

The absolute maximum rating for the Drain-Source Voltage (VDSS) is 150 V.

Does the 1011GN-1200V/VEL require external matching networks?

No, the transistor features an internal pre-match network designed for optimal performance, reducing the need for complex external matching circuits.

What is the typical drain efficiency at 1200W output power?

The typical drain efficiency (ηD) is 75% when delivering 1200W of output power at frequencies of 1030 MHz and 1090 MHz.