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News Article

STMicro Strengthens Position in RF Power Market

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STMicroelectronics has unveiled two new moisture-resistant radio-frequency (RF) power transistors that the company says increases the ruggedness and reliability of applications operating in high-moisture environments.

The cavity of the two 50V RF DMOS devices is filled with gel, protecting the die from electro-migration such as silver dendrite migration, a well-known phenomenon that appears in standard ceramic packages due to a combination of high temperature, biasing and humidity. The use of gel-filled packages helps reduce the overall maintenance costs of the applications running in high-moisture environments.

ST's 150W SD2931-12MR and 300W SD4933MR are offered as a cost-effective solution for 50V industrial RF power generators in applications such as induction heating, CO2 laser-beam sources, PECVD (Plasma-enhanced chemical vapour deposition) sputtering, and solar-cell manufacturing equipment.


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