10 pcs ULN2003A ULN2003 DIP-16 IC Array 7-Channels NPN IC Chip ULN2003APG with
10 pcs ULN2003A ULN2003 DIP-16 IC Array 7-Channels NPN IC Chip ULN2003APG with DIP IC Chip Socket Adaptor. ULN2003 ULN2003A ULN2003APG ULN2003AN. Each pair of Darlington is connected in series with a 2.7K base resistor.