Head-in-Pillow BGA Defects Head-in-Pillow BGA Defects. Head-in-pillow (HiP), also known as ball-and-socket, is a solder joint defect where the solder paste deposit wets the pad, but does not fully wet the ball. This results in a solder joint
SMTnet Express, December 18, 2014, Subscribers: 23,604, Members: Companies: 14,148, Users: 37,424 Head in Pillow X-ray Inspection at Flextronics Alejandro Castellanos, Adalberto Gutierrez, Gilberto Martin... - Flextronics International