Murata has announced a water-repellent monolithic ceramic capacitor developed by applying an innovative surface treatment.
Electronic devices are becoming ever more compact and densely packed with components, with this comes an increase in the possibility of malfunctions influencing circuit operation due to ion migration.
Ion migration may occur when voltage is applied to a capacitor where moisture is present between the electrodes. This may result in the anode metal becoming ionized and changing to a cathode. Then, when gaining electrons as a cathode, the metal may undergo the electrochemical phenomenon of deposition and growth that can eventually result in a short-circuit. This is particularly prone to occur when the capacitor is moistened by condensation.
To address this issue Murata has developed a water repellent monolithic ceramic capacitor. The monolithic capacitor is treated with a water-repellant treatment film so that moisture forms into scattered, rather than larger, droplets. These droplets are suppressed to a size that is not big enough to span the gap between the external electrodes and this prevents ion migration.
This capacitor has applications particularly in navigation systems, body control electronic control units (ECUs), air conditioner ECUs, meter ECUs and engine ECUs, etc.
Sample shipments have already begun and the capacitor is scheduled to enter mass production within the year.
주식 회사 무라타 제작소는 기능성 세라믹을 기반으로 전자 디바이스의 연구 개발 • 생산 • 판매를 행하고 있으며, 재료부터 제품까지 일관 생산 체제를 구축하고 있습니다. 또한, 무라타 제품의 90%이상은 해외에서 판매되고 있으며, 국내외로 글로벌 회사를 전개하고 있습니다.