Lid Systems for Capacitors

SCHOTT’s lid systems for capacitors offer numerous performance improvements*:

• Up to 20% reduction in capacitor package volume
• 60% reduction in capacitance loss
• 50% improvement of internal resistance
• High temperature resistance ranging from -40 degrees Celsius to +150 degrees Celsius
• 10-15 year increase in product longevity

 
Design capabilities enabled for capacitor manufacturers:

• Smaller capacitors with increased capacitance
• New capacitor types with increased capacitance and greater longevity
• New capacitors able to withstand much higher temperatures
• High-performance ultracapacitors and electric double layer capacitors that fulfill the harsh requirements of new applications, including EVs, E-Bus, Renewable Energy, Heavy Industry, and Defense & Aerospace

From prototype to mass production, SCHOTT is a reliable partner with full in-house development and production capabilities.

* (Values may vary, depending on final capacitor design)

New designs of aluminum electrolyte capacitors, such as electric double layer capacitor and ultracapacitors, are currently in development for modern and emerging applications, including electric vehicles, high-power applications, renewable energy, and many more.

These applications pose new technical requirements on the capacitor, demanding long-lasting high performance. GTAS leak-tight, lid systems for capacitors can enable both small and large capacitor designs to fulfill such requirements.

Technology

Since the 1930s, SCHOTT has been manufacturing hermetic housings using glass-to-metal sealing (GTMS) technology. This technology is proven in many high volume applications, such as automotive sensor housings and battery covers of lithium thionyl chloride (Li-SOCl2) batteries.

Drawing on more than 20 years of sealing experience for primary batteries, innovative glass-to-aluminum sealing technology was specifically designed for long-lasting lithium-ion batteries and capacitors.

Sintered glass preforms are melted around the conductors to provide electrical insulation, enhance mechanical strength and center the conductors in the openings for the feedthroughs. The special glass is matched to the metal – in this case aluminum – with considerations for its coefficient of thermal expansion, creating natural compression during cooling. In its application, the conductors remain firmly fixed by the solidified glass, even if mechanical pressure is applied or the temperature changes dramatically.

All our production facilities are ISO 9001 certified. For more information, please refer to our quality assurance processes.