854/855 Series Low Profile, Miniature Spring-Loaded Contacts

Mill-Max’s 854 and 855 series miniature spring-loaded pins and connectors are designed to address the ever-shrinking requirements of electronic device packaging while providing exceptional electrical and mechanical performance. Through extensive development and testing, Mill-Max has designed and produced spring-loaded pins with a 33% reduction in height from comparable pins in the 0.050” pitch (1.27 mm) category. These spring-loaded interconnect products include discrete pins and connectors in single and double-row versions. The pins 0950-0-15-20-64-14-11-0 (SMT version) and the 0984-0-15-20-64-14-11- 0 (through hole version) each have an above-board height of just 0.166” (4.2 mm), a full stroke capability of 0.040” (1 mm), and provide 50 grams of force at the mid-stroke working travel of 0.020” (0.5 mm). Electrically, the pins are characterized by a contact resistance of less than 20 milliohms and a maximum current rating of 7 amps at a +30°C temperature rise. The pins also meet the shock and vibration requirements of IEC standards 60512-6-3 and 60512-6-4.

The single and double-row connectors have 0.050” (1.27 mm) pin-to-pin spacing, are available in surface mount and through-hole configurations, and all exhibit impressively low above-board height of 0.166” (4.2 mm). The single-row connectors, 854-22-0XX-10-004101 (through-hole) and 854-22-0XX-30-004101 (SMT), are offered in 2 to 20 positions, while the double-row connectors, 855-22-0XX-10-004101 (through-hole) and 855-22-0XX-30-004101 (SMT), are offered in 4 to 40 positions. The connector insulator material is high-temperature, durable nylon, suitable for all soldering processes. Paired with the 856 or 857 series target connectors, board-to-board heights as low as 0.236” (6 mm) can be achieved at mid-stroke compression. Target connectors in surface mount, through-hole, right angle, and wire termination styles provide solutions for almost any interconnect application. These low-profile spring-loaded pins are made with precision machined components and stainless steel springs; all are gold-plated to ensure the highest conductivity, corrosion resistance, and endurance. They have a durability of 100,000 cycles (minimum) at half-stroke while continuing to meet their electrical and mechanical specifications.