50PCS (25PCS*2 values) Bc547B Bc557B 2SB647A SD667A BC550C Bc560C TO-92 TO-92L Original NPN PNP Transistor integrated circuit

50PCS (25PCS*2 values) Bc547B Bc557B 2SB647A SD667A BC550C Bc560C TO-92 TO-92L Original NPN PNP Transistor integrated circuit