7173DG is a channel board level heat sink designed to cool TO-220 and TO-220-single gauge devices. Constructed from copper with a tin-plated finish, this heat sink features dimensions of 19.05 mm width, 9.52 mm length, and 19.05 mm height with vertical mounting orientation. The design includes a 3.81 mm through-hole and specific mounting dimensions with X dimension of 9.22 mm, Y dimension of 4.11 mm, and Z dimension of 2.54 mm. This RoHS compliant heat sink requires a mounting kit for device attachment and is ideal for board level thermal management applications where efficient heat dissipation from power semiconductors is required.