The QTH/QSH Series of matched impedance micro interfaces on 0.5 mm pitch are available with a choice of 60, 120, 180, 240 and 300 I/Os. The discrete ground plane between rows is surface mounted for and eliminates the need for through-hole penetrations. These high-speed interconnects are fully tested for 50-ohm systems for impedance, VSWR, attenuation, crosstalk and propagation delay at frequencies from 10 MHz to 1 GHz. They provide a board-to-board spacing of only 5 mm between boards. Edge mount, elevated, differential pair and cable versions of these interfaces are under development. Pricing begins at $0.09 to $0.12 per mated line.
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