SMD三极管（SOT-23封装）的表示方法型号 丝印 9011 1T 9012 2T 9013 J3 9014 J6 9015 M6 9016 Y6 9018 J8 S8050 J3Y S8550 2TY 8050 Y1 8550 Y2 2SA1015 BA 2SC1815 HF 2SC945 CR MMBT3904 1AM MMBT3906 2A MMBT2222 1P MMBT5401 2L MMBT5551 G1 MMBTA42 1D MMBTA92 2D BC807-16 5A BC807-25 5B BC807-40 5C BC817-16 6A BC817-25 6B BC817-40 6C BC846A 1A BC846B 1B BC847A 1E BC847B 1F BC847C 1G BC848A 1J BC848B 1K BC848C 1L BC856A 3A BC856B 3B BC857A 3E BC857B 3F BC858A 3J BC858B 3K BC858C 3L 2SA733 CS UN2111 V1 UN2112 V2 UN2113 V3 UN2211 V4 UN2212 V5 UN2213 V6 2SC3356 R23 2SC3838 AD