Knowles has broadened its Cornell Dubilier capacitor lineup with the new Type CLS Flatpack aluminum electrolytic capacitors, designed to operate at temperatures of up to 105°C. The series is aimed at compact, high-density power supplies and other systems that need high bulk capacitance in a space-saving package but do not require a 125°C-rated capacitor.
The CLS range adds a new 105°C temperature option to the existing Flatpack family. This lineup also includes the MLPS series, rated for 85°C, and the MLSG series, rated for 125°C. The additional rating gives engineers greater flexibility when balancing operating temperature, capacitance, and available space.
According to Knowles, the CLS capacitors have successfully undergone 10,000 hours of endurance testing at 105°C. This makes them suitable for applications where dependable long-term performance is essential, including high-density commercial power supplies, military systems, and other mission-critical equipment.
The capacitors feature a low-profile stainless-steel housing designed to aid heat dissipation. This construction provides a compact form factor while supporting efficient operation and reliability in space-constrained applications.
The wider Flatpack range offers voltage ratings of up to 300 V and capacitance values reaching 83,000 µF. The devices are built to handle demanding environments involving vibration, mechanical shock, and high ripple currents, providing both electrical and mechanical durability.
Designers can choose from multiple low-profile stainless-steel case sizes and mounting options, allowing the capacitors to be adapted to different system layouts. Their high capacitance in a single compact package can also reduce PCB connection points and make system assembly simpler.
The Flatpack family additionally offers hermetic and near-hermetic sealing options for applications requiring extended service life and improved resistance to vibration. With the launch of the 105°C CLS series, Knowles adds another option for engineers developing compact, high-density power systems where space, reliability, and thermal performance are important considerations.
