SD2942W

Overview

The SD2942W is a gold-metallized N-channel MOS field-effect RF power transistor manufactured by STMicroelectronics. It operates at frequencies up to 175 MHz with a minimum output power of 350 W and a gain of 15 dB. The device features a continuous drain current of 40 A and a drain-source breakdown voltage of 130 V. Designed for 50 V DC applications, it supports operation up to 250 MHz. The component utilizes screw mount installation and is packaged in tubes.

Feature Summary

• Gold metallization provides excellent thermal stability
• Common source push-pull configuration design
• Low R DS(on) characteristics

Applications

• Very high power RF amplifier circuits
• VHF/UHF broadcast transmitter stages
• RF power generation systems

Procurement Notes

Verify the specific suffix 'W' against the official datasheet to confirm package or material variations. Ensure compatibility with existing thermal management solutions due to the high power dissipation requirements. Confirm RoHS compliance status through the manufacturer's latest documentation before integration.

Selection Notes

Select this component for designs requiring high saturation power and low on-resistance in the VHF band. Compare performance metrics against the SD2932 series for potential efficiency improvements. Ensure the circuit layout supports the common source push-pull topology and adequate heat sinking for the specified operating temperatures.

Part Context

The SD2942 belongs to the SD2942 family of RF power transistors. It offers improved performance over the SD2932, featuring lower R DS(on) and higher power saturation. This lineage targets demanding RF applications where thermal stability and high output power are critical constraints.

Replacement Considerations

The SD2932 is referenced as a predecessor with lower performance metrics. Verify electrical compatibility if substituting. No other direct public substitutes are confirmed.