Higher temperature tolerance capacitor for automotive and industrial applications

New to the Rutronik portfolio is the YK polymer hybrid aluminium electrolytic capacitor series from SAMWHA. The newly introduced capacitors, known as the ‘High Temperature Series’, are installed in SMD chip housings and combine high electronic performance with robustness. The high conductivity of the polymer assures low losses, while the liquid electrolyte provides self-healing of the dielectric and stable capacitance. The capacitors deliver better frequency response compared to classic liquid electrolytic capacitors and score especially well with their high temperature resistance. They are AEC-Q200 qualified and ideal for use in automotive electronics, telecommunications and 5G infrastructure, energy and power electronics.

The series relies on hybrid technology that combines conductive polymer and liquid electrolyte in the capacitor. This combines the advantages of both technologies for very low ESR and high ripple current resistance without excessive heating.

With an extended operating temperature range from -55C to +135C, the series achieves comparable capacitance values of approximately 33µF to 470µF, depending on the rated voltage and size. For example, the YK capacitors offer up to 330µF @ 35V in a 10mm x 10mm SMD package, while the previous YH model only delivered 150µF @ 35V with a similar size. Depending on the model, the rated voltage of the capacitors is typically between 25V and 63V DC.

Typical application include:

Automotive electronics

• Control units
• Sensors and actuators in the engine compartment
• Driving assistance systems
• On-board power converters
• Industrial electronics and control
• Frequency converters
• Drive control
• Switched-mode power supplies

Telecommunications and 5G infrastructure

• Filter and amplifier modules in radio base stations
• Server power supplies
• Data centre electronic
• Energy and power electronics
• Charging stations
• Battery buffers, UPS