晶闸管可控硅N490SH22N490SH24
490晶闸管可控硅SH
晶闸管可控硅SGBJHSH
晶闸管可控硅SHSHTHT
晶闸管可控硅平板WESTCODE
可控硅N490CH12N490SH14N490CH16
晶闸管1467平板490
