Solder Barrier Pin Receptacles & Sockets with OFP® Knockout Bottom

Mill-Max Organic Fibre Plug® receptacles and sockets are discrete sockets for through-hole soldering into printed circuit boards. These open bottom receptacles are fitted with organic fibre plugs to prevent solder, paste or flux from contaminating the internal contact during the placing and soldering process. When the device/mating lead is plugged into the receptacle the OFP® is knocked out allowing the mating lead to pass through the fingers of the internal contact and make a reliable electrical connection.

14 sizes/styles are now available, 13 have standard tape & reel packaging. The advantage of tape & reel packaging for these receptacles is it permits through-hole components to be placed simultaneously with surface mount parts on pick-’n-place assembly lines – eliminating the need to hand place the receptacles in an additional manufacturing step. The OFP® barrier permits the sockets to be vacuum picked from the tape prior to placement in a hole in the circuit board.

The knock-out-bottom feature enables these sockets to be made relatively short compared to many similar receptacles. The reduced length provides two advantages: the receptacles can stand upright and stable in a carrier tape pocket and the protrusion through the PCB is minimal — especially important when working with SMT boards. The open bottom receptacle design eliminates the need to trim long device leads that would otherwise bottom out in a closed receptacle design and also makes them ideal for low profile board stacking applications via the ability to pass through.

The OFP® parts are available as discrete receptacles and can be supplied in bulk or on carrier tape,. per EIA-481 for industry standard pick and place machines.

All Mill-Max receptacles use a precision-machined brass housing with a press-fit beryllium copper “multi-finger” contact.

These are also available in strip sockets. 834 (Single Row) and 835 (Double Row) Series Pass-Through Sockets have a low .130” (3.30 mm) profile and will accept Ø.030” (.76 mm) round pin, as well as industry standard .025” (.64 mm) square pin headers.

All Mill-Max receptacles use a precision machined brass housing with a press-fit beryllium copper “multi-finger” contact (heat-treated BeCu is the best electrical spring contact material.)

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