SD2933

Overview

The SD2933 is a gold metalized N-channel MOS field-effect RF power transistor designed for 50 V DC large signal applications up to 150 MHz. It delivers a minimum output power of 300 W with 20 dB gain at 30 MHz. The device features excellent thermal stability and a common source configuration. Its thermally enhanced packaging reduces junction temperatures, making it suitable for ISM applications requiring high reliability and ruggedness.

Feature Summary

• Gold metalization for enhanced performance
• Excellent thermal stability
• Common source configuration
• Thermally enhanced packaging

Applications

• ISM band applications
• Large signal RF amplification
• High reliability RF systems

Procurement Notes

Verify the specific suffix (e.g., -W) against the datasheet to confirm package type and marking. Confirm RoHS compliance status via official documentation before procurement. Check current production status as components may transition between active and obsolete phases. Ensure storage conditions meet moisture sensitivity requirements if applicable.

Selection Notes

Select this component for 50 V DC bias circuits operating below 150 MHz. Evaluate thermal resistance requirements based on the intended heat sink interface. Compare output power capabilities against system load demands. Consider the common source topology for impedance matching networks.

Part Context

This part belongs to the SD2933 series of HF/VHF/UHF RF power N-channel MOSFETs from STMicroelectronics. It is electrically similar to other variants in the family but distinguished by its specific power and frequency ratings. The series targets industrial, scientific, and medical frequency bands.

Replacement Considerations

The SD2943 offers 20% higher saturation power than the SD2933. Verify pin compatibility and thermal characteristics when substituting. Ensure the replacement meets the 300 W minimum output power requirement.