Murata’s Next-Gen Water Repellant Capacitor for Car Infotainment Systems

Murata Manufacturing introduces the GXT series of water repellant capacitors nurtured for automobile infotainment systems and comfort equipment conforming the AEC-Q200 automotive electronic components standards

Murata Manufacturing introduces the GXT series of water repellant capacitors nurtured for automobile infotainment systems and comfort equipment. Now exclusive on mass production, the capacitors aredesigned with a water repellant layer on a multilayer ceramic capacitor.

Murata has applied a water repellant layer to the surface of a multilayer ceramic capacitor that conforms to the AEC-Q200 automotive electronic components standards and thereby introduced a water repellant capacitor that can mitigate ion migration due to condensation.

Regarding water repellant capacitors, the company has offered the GXM series for general electronic equipment and the GGM series for automotive powertrain and safety applications, and is now adding the GXT series for automotive infotainment systems and comfort equipment.

The structure of a water repellant capacitor is illustrated in Fig. 1. A water repellant layer has been applied to the surface of the capacitor. This water repellant condition of the capacitor maintains water droplets in a scattered state (Fig. 2), hindering growth of the condensed water drops that can connect the outside electrodes, and it thereby reduces the occurrence of ion migration. In addition, the water repellant film on the surface of the capacitor suppresses the elution of outside electrode metal to a water drop (ionization). In a wettability test using a water-soluble black marker (Fig. 4), the water repellant condition of a processed component is clearly superior to that of a component without the Murata Water repellant Layer.

(Note: The goal of this Murata component is reduction of ion migration, not complete prevention of the effect.)

Applications

Automotive infotainment systems, comfort equipments

(car navigations, audio equipments, etc.)

Sample Availability

Murata is accepting Web-based requests for free-of-charge samples for the following part numbers. Murata welcomes these sample requests.

Further info: www.murata.com