正品SB1680FCTSB1660FCTSB16C554A¥1.20去看看元器件之家发布了正品SB1R5-55D SB19NP18B SB16C554A SB1680FCT SB1660FCT贴片SB19NP18BSB2040FCTSB82371SB¥2.50去看看芯片二极管三极管电容电阻集成电路发布了贴片直插SB82371SB SB2040FCT SB1100T/R SB19NP18B 5