1011GN-1200V

Overview

The Microchip Technology 1011GN-1200V is a Common Source, Class AB GaN on SiC HEMT transistor designed for L-Band Avionics applications at 1030/1090 MHz. It delivers 1200 Watts of pulsed RF output power with over 18.5 dB gain and 75% drain efficiency under typical conditions (P_OUT=1200W, Freq=1030,1090 MHz). The device features an internal pre-match network and gold metallization for ruggedness. Absolute maximum ratings include a Drain-Source Voltage (VDSS) of 150 V, Gate-Source Voltage (VGS) of -8 to +0 V, and a Maximum Power Dissipation of 2400 W at 25°C. Operating junction temperature reaches +200°C.

Feature Summary

• Internally matched Common Source architecture optimized for high-power RF amplification
• Gallium Nitride on Silicon Carbide (GaN on SiC) HEMT technology ensuring superior ruggedness
• Gold metallization construction for enhanced reliability in demanding environments
• Integrated pre-match network facilitating optimal performance across the target frequency band

Applications

• L-Band Avionics transmitters operating at 1030/1090 MHz
• Mode-S ELM pulse format transmission systems
• High-power pulsed RF amplification requiring high thermal stability

Procurement Notes

Verify the specific package variant required upon ordering, as the datasheet distinguishes between the standard 55-Q03 and the VEL 55-Q03P packaged devices. Confirm that the application environment supports the specified absolute maximum ratings, particularly the 150 V Drain-Source Voltage and +200°C operating junction temperature. Ensure biasing circuits align with the recommended Vdd=+50V and Idq=150mA average current parameters for optimal gain and efficiency performance.

Selection Notes

Select this component for applications requiring high pulsed power output in the L-Band avionics spectrum. The internal matching simplifies circuit design by eliminating external impedance networks. Consider the thermal resistance of 0.25 °C/W when designing heat sinking solutions for the 32us, 2% duty cycle operation. Verify compatibility with Mode-S ELM pulsing requirements if long-term duty cycle performance is critical.

Part Context

This device belongs to the family of Gallium Nitride High Electron Mobility Transistors (HEMTs) manufactured by Microchip Technology (formerly Microsemi). These components are engineered for high-frequency, high-power radio frequency applications where traditional silicon technologies may lack sufficient breakdown voltage or thermal handling capabilities. The use of Silicon Carbide substrates provides the necessary thermal conductivity and electrical robustness for avionics and defense sectors.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

FAQ

What is the maximum Drain-Source Voltage rating?

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

Does the transistor require external matching networks?

No, the 1011GN-1200V features an internal pre-match network designed for optimal performance, reducing the need for complex external impedance matching circuits.

What is the typical drain efficiency at rated output power?

At P_OUT = 1200W and frequencies of 1030/1090 MHz, the typical drain efficiency (ηD) is 75%.