The ULN2003A has:7 Darlington drivers up to 500mA each in a 16 pin DIP package3.3V and 5V CMOS and TTL logic compatible, internal pull-downIntegrated freewheeling diodes for inductive loadsTypically used for relays and LEDs drivers See manufacturer's datasheet for full details Prepared in an ESD safe environment, packaged properly and sent to you in an ESD sealed IC tube within an antistatic bag, enclosed overall in a padded jiffy bag.