TDK 0805(2012M)1nF MLCC 250V dc ±20% SMD C2012JB2E102M C2012JB2E102M TDK 0805(2012M)1nF陶瓷多層電容 250V 直流 ±20% 表面安裝C2012JB2E102M C2012JB2E102M 立即詢價