Miniature receptacles for high-density interconnect configurations introduced by Mill-Max
OYSTER BAY, N.Y., 2 Aug. 2016. Mill-Max Manufacturing Co. in Oyster Bay, N.Y., is introducing four miniature boardinterconnect receptacles for high-density configurations down to 1-millimeter pitch.
Each receptacle contains a three-finger beryllium copper contact with a diameter range of 0.008 to 0.013 inches that features a low-insertion force making it compatible with miniature leads subject to bending.
Two of the receptacles, 0439-0-15-15-04-27-04-0 and 8210-0-15-15-04-27-04-0, have solder tails for through-hole applications. The tail diameters, 0.014 and .012 inches minimize the size of the circuit board holes to accommodate tight pitch layouts.
The 0439 provides an above-board height of 0.09 inches while the 8210 sits at 0.1 inches, with press-fit receptacles for mounting in insulators to make connectors.
The 4428-0-43-15-04-14-10-0 receptacle is a low-profile solder-mount, open-bottom receptacle fitted with Mill-Max's Organic Fibre Plug. The OFP provides a temporary solder barrier preventing solder paste from entering the contact area during assembly for paste-in-hole reflow soldering.
After assembly, the fibre plug is knocked out when the mating lead is plugged in; the now open bottom allows long leaded devices to pass through. The 4428 series is available in bulk or on tape & reel for automatic assembly.
The last of the four receptacles, the 9928-0-15-15-04-27-40-0, is a SMT receptacle mainly used for 1-millimeter grid socket configurations such as in BGA socket and adapter pairs. The 0.016-inch diameter base of the receptacle is for 1-millimeter grid board layouts and the .09-inch height helps to keep overall packaging profiles to a minimum.
The receptacle shells are made from brass alloy and are high-speed machined to precision tolerances. The inner contact is press-fit into the receptacle shell forming a gas-tight connection. It is precision stamped from beryllium copper strip and heat-treated to provide excellent spring and electrical properties. All four receptacles have a current rating of 2 amps.
Both the receptacle shells and contacts are gold-plated providing the highest interconnect reliability, corrosion protection and wear resistance.
For more information contact Mill-Max online at www.mill-max.com.
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