Semiconductor Device, Transistor, NPN, Silicon, Switching, Types 2N2369A, 2N3227, 2N4449, 2N2369AU, 2N3227U, 2N2369AUA, 2N3227UA, 2N2369AUB, 2N2369AUBC, 2N2369AUBCN 2N3227UB, 2N3227UBC, 2N3227UBCN, 2N4449U, 2N4449UA, 2N4449UB, 2N4449UBC, and 2N4449UBCN, J