Providing flush-mount capability, the new Mill-Max receptacle offers zero profile and dual entry.
Mill-Max announced a new option in its receptacle line-up – a new receptacle providing flush-mount PCB assembly and dual-entry capability.
The 0531-0-15-15-31-27-10-0 receptacle is a zero-profile, solderless, press-fit receptacle with an overall length of .068” (1.73mm). When pressed in, the 0531 sits flush with the PCB surface to achieve the lowest possible component height above board. The hexagon-shaped head is designed to be press-fit into a .045” (1.14mm) ø plated through-hole. The open bottom design allows for mating-pin entry from either end. The minimum mating pin length for bottom entry is .045” (1.14mm); for top-entry insertion the minimum length is .054” (1.37mm). This dual-entry feature allows for flexibility in component placement and assembly of boards and modules.
The 0531 also provides early engagement contact and minimal overall length and accepts lead diameters from .018”-.023” (0.46 – 0.58mm). The internal contact allows for short receptacle designs due to its .062” (1.57mm) length and the fact that its design does not require excess protrusion through the fingers of the contact for electrical connection. The ability to use shorter mating pins provides several advantages such as compressed packaging, shorter electrical signal paths, and lower potential RF signal interference.
The receptacle shell is made from brass alloy and, like all Mill-Max pins, is high-speed machined to precision tolerances. The contact is press-fit into each receptacle shell forming a gas-tight connection. It is a four-finger contact, precision-stamped from beryllium copper strip and heat treated to provide excellent spring and electrical properties. The receptacle current rating is 3A (at 10°C temperature rise in free air). The receptacle shell and contact are gold-plated, providing the highest interconnect reliability, corrosion protection, and wear resistance. Gold plating on the shell of the 0531 is recommended to yield the best results during the press-fitting operation.
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