4.7NF 472 4.7NF(472)/1KV 4.7nf(472)3KV高压电容 4.7NF/100V 4.7NF/2000V 4.7NF/50V 4.7NF/50V-0402 4.7NF-1210 4.7NF2012X7R50VK 4.7nH