The 628-40AB is an omnidirectional pin fin heat sink designed for thermal management of BGA devices. It features base dimensions of 1.750 x 1.700 inches (44.5 x 43.2 mm) and a pin height of 0.400 inches (10.2 mm). This model is constructed with an 11x10 pin array to provide effective cooling in both natural and forced convection applications. Weighing 22.68 grams and featuring a black anodized finish, it is typically used for 45mm BGA packages and can be ordered with an optional factory-preapplied pressure-sensitive adhesive for simplified mounting.