Mill-Max Corporation, a vertically integrated engineering and manufacturing company, has developed a versatile line of horizontal surface-mount (HSMT) spring-loaded pins, designed for making low-profile connections parallel to the board surface for electronic applications.
The new HSMT spring-loaded pins ensures the plunger travels in-line with the board surface, making them ideal for end-to-end board connections in assemblies with restrictive height requirements.
This family of pins offers rated travel options from .0195” (0,50 mm) to .059” (1,50 mm) with associated maximum travel options of .039” (1 mm) to .118” (3 mm), meeting a wide range of interconnect requirements. The 0986-X and 0988-0 spring components have an above-board height of only .070” (1,78 mm) with a .035” (,9 mm) plunger centerline while the 0968-0, 0967-0 and 0987-0 spring pins sit slightly higher at .100” (2,54 mm) and .050” (1,27 mm) plunger centerline.
The low profiles are critical when working with a limited overall package height or in applications where vertical board stacking is not an option and PCBs are daisy-chained together, such as in LED lighting systems.
Each HSMT spring-loaded pin also offers ample surface area for SMT soldering, ensuring secure attachment to the board to stand up to rough handling, particularly in blind mating and quick connect applications. They’re typically mounted near the edge of the board with the plunger, extending beyond the board edge to make contact with a target on a mating board or device.
Target options for horizontal board mating are single-position, right-angle target connectors (series 399-XX-XXX-008) or individual HSMT Target pins, such as 7937-0. All options are offered in bulk packaging, and supplied on tape and reel, designed per EIA-481 standards. The large flat body provides the ideal surface for pick and placement.
There’s no need for bulky pick and place caps, allowing for more parts per reel, less waste, and fewer assembly steps.
Each component (including the spring) is gold-plated and made of high-quality materials to ensure high reliability, as well as corrosion and wear-resistance, resulting in a durability rating of up to 1,000,000 cycles.