Welcome to J2M

J2m Test Solutions, a subsidiary of Darmark Corporation, has become the preeminent leader of custom test sockets and interconnects for the laboratory and production environments. With over 30 years experience in advanced engineering design, development, and manufacturing, we provide our customers with products that have the maximum electrical performance and reliability.


J2m products span some of the most demanding applications in the world, such as KGD, MLC, SiP, SDP, QFN, CSP, TSOP, BGA.


J2m Test Socket Advantages
• Pitches from 0.2mm and greater• Machining tolerances to +/- .0002
• Bandwidths up to 17 GHz
• Contact Life > 500,000 cycles
• Operating temperature -55°C to 150°C
• Resistance as low as 20mO
• Contact length down to 1.8mm (.071)
• Consistent contact force as low as 13 grams


Today’s semiconductor production environment is complex, expensive, and uptime is critical to the economical success. J2m’s customer centric approach, state-of-the-art automated manufacturing facility, the use of high-end material such as Vespel or SP1, and custom design, allows us to create products that have a longer life cycle. This approach gives our customers maximum efficiency and productivity allowing them to improve yield and cost performance.


J2m’s strict conformance with ISO standards, unparalleled customer service, and superior products help us guarantee complete customer satisfaction.




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