App note: Solid electrolytic capacitors designed for high temperature applications

New development and manufacturing process produces extended temperature endurance of solid capacitors discuss in this app note from KEMET. Link here (PDF)

For decades the maximum recommended operating temperature of solid electrolytic capacitors was 125°C. Responding to needs in the automotive and downhole drilling industries passive component manufacturers developed surface mount tantalum capacitors rated at 150°C in 2002-2003. Since that time the industry has introduced high temperature capable tantalum capacitors generally in 25°C increments roughly every four years. Today multiple manufacturers have products rated at 230°C poised for market release.

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