MPSA06参数NPN80V0.5A0.6W代用BC141/BC538/BC535。3DG327A参数NPN30V/0.05A/1GHZ代用BF357/2SC327/3DG44A。3DG337A参数NPN/20V/0.02A/100MHZ代用BC108/2SC337/BC238