3M 8400 Series Low Profile, 4 Row PLCC Sockets 8400 Series 4 row PCB PLCC sockets that accept PLCCs conforming to JEDEC outline MO-047 for square and MO-052 for rectangular. These 8400 series PLCC sockets have a low profile design, an open top for unrestricted airflow and feature moulded slots to facilitate device extraction. The high temperature insulator of these 8400 PLCC sockets makes them compatible with IR reflow and wave soldering and they are also compatible with automated loading equipment.