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Ironwood Electronics SM/SMP socket uses SM & SMP contact technology for high speed, low inductance, high endurance and wide temperature applications. The SM contact is a unique contact that has precise silver balls held together by a proprietary conductive formulation. These conductive columns (diameter optimized for 50 ohm impedance) are suspended in a non-conductive flexible elastomer substrate with a patented solid core for enhanced durability and reliable performance over time, temperature and cycles. This flexible substrate is very compliant and resilient and enables the conductive columns to revert back to original shape when the force is removed. Solutions are available for 0.25mm to 1.27mm LGA, BGA, QFN, CSP, POP, WLP and other packages.
Typical specifications for the SM/SMP contact technology include: Over 40GHz bandwidth @-1dB for edge pins, contact resistance under 15mOhms, self-inductance under 0.21nH, capacitance under 0.15pF, operating temperature range -55C to +150C, insertion/extraction life over 500, 000 cycles with protective plunger matrix, current rating at 14C temperature rise is 4 Amps per pin.