Top Dies are machined to precisely mate with press fit parts and press these parts into the PCB without damaging them. Top Dies provide an interface between the ram, the component, and the board. Without a top die the component pins may buckle or pull out of the part instead of pressing into the PCB.
Top Dies are made from many materials including aluminum and tool steel. In many cases they are heat treated to increase hardness and maximize longevity.
Ascentec now offers a site devoted to tooling required for working with press fit style connectors. These tools include top dies or top insertion tools for both vertical and horizontal style connectors, tooling required for pressing cages, light pipe insertion tools, and tools for press fit connector removal. Many of these tools are in stock, and can be ordered directly from our website.