Panasonic capacitor is 6.3mm diameter and handles 30G vibration acceleration

Panasonic high vibration acceleration-resistant, conductive-polymer hybrid aluminium electrolytic capacitors

Panasonic has commercialised an automotive, high vibration acceleration-resistant, conductive-polymer hybrid aluminium electrolytic capacitor.

The capacitor is said to be the industry's first 6.3mm diameter with 30G vibration acceleration resistant characteristics. It will be launched in January 2018.

Its compact diameter and stability for vibration is suitable for use in power circuits for automotive ECUs employed in hybrid electric, electric and petrol-powered vehicles.

With the growing demand for eco-friendly cars, energy efficiency and the need to comply with environmental regulation, more ECUs are being employed in cars. Mechanical and electrical in-vehicle components are also becoming integrated. This trend has created a need for more compact ECUs combined with better resistance to vibration.

The capacitors employed to stabilise the voltage of a power circuit for the ECU and eliminate electronic noise are therefore increasingly required to be smaller in size and to show better anti-vibration performance.

This surface-mounted conductive polymer hybrid aluminium electrolytic capacitor is 6.3mm in diameter and achieves resistivity of 30G high vibration acceleration. It is 6.1 or 8.0mm high.

The capacitor is said to render unnecessary the anti-vibration techniques that are conventionally part of the board mounting process, thus allowing users to streamline their production processes.

It reduces the use of bonding-based reinforcing measures, such as attachment using adhesives.

The auxiliary terminal structure is said to provide highly reliable soldering properties.

The pressure to reduce the size, weight and number of power train-type ECUs mounted in cars has led to a change in their placement from the engine compartment to the engine itself. This has increased the need for the capacitors incorporated in ECUs of this type to be small, high-capacitance and extremely anti-vibration.

Most capacitors with anti-vibration performance are 8 to 10mm in diameter. The industry, however, needs a smaller type.

The conventional ECU board mounting process requires anti-vibration measures, such as anchoring components with adhesives, to make the ECU resistant to vibration if using non-vibration-resistant components. This capacitor has achieved anti-vibration performance high enough to withstand a vibration acceleration of 30G, making such anti-vibration measures unnecessary.

The auxiliary terminal structure has auxiliary terminals positioned on the sides of the capacitor. This eases visual confirmation of auxiliary terminal soldering, ensures stable soldering properties and enhances the ECU's overall vibration resistance.

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