MAXIMUM SOLUTIONS
New Receptacle from Mill-Max Offers Zero Profile & Dual Entry
Mill-Max is pleased to announce a new option in our receptacle line-up with the introduction of 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 over-
all 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, minimal overall length and accepts lead diam-
eters 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 its design does not require excess protrusion through the
fingers of the contact for electrical connection. The ability to use shorter mating pins provides sev-
eral 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, are high-speed machined to
precision tolerances. The contact is press-fit into each receptacle shell forming a gas-tight connec-
tion. 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 3 amps (@10°C
temp. rise in free air). The receptacle shell and contact are gold-plated providing the highest inter-
connect 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.
For more information, please visit: www.mill-max.com/PR647.
(8/14 -- PR647)
Mill-Max Mfg. Corp. • 190 Pine Hollow Road, Oyster Bay, NY 11771
516-922-6000 • Fax: 516-922-9253 • www.mill-max.com