常见小功率贴片晶体三极管(BJT)场效应三极管(FET)丝印标识 型号（BJT）丝印标识型号（FET)丝印标识90122T1AO3400A09T9013J3AO3401A19T9014J6SI2301A1SHB9015M6SI2302A2SHB9018J8BF8622AW5551G15401L28050J3Y,Y185502TY,Y239041AM39062A粗体为PNP,P沟道