Fischer smd female header precision contacts 254mm pitch square 0635mm pins fischer elektronik mk 222 smd 40 fischer mk 222 smd 40 female header vertical precision contacts arranged 2x20 with 254mm pitch and gold plated plated contacts no capilliary action when soldering due to protected inner contact contact sleeve is tin plated fischer mk 222 smd 40 precision female header 2x20 vertical 254mm 0635mm au