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This article describes a convenient device for making coaxial connections to existing probe cards to expand card testing to include capacitance testing.
English (United States)
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Page 1 of 2
Coax Mount for Probe Cards
This article describes a convenient device for making coaxial connections to
existing probe cards to expand card testing to include capacitance testing.
The coax mount 10 shown in the figure is considered to be a probe card
accessory. The mount 10 is constructed from sheet metal at minimal cost and
can be mass produced very easily. The mount begins as a sheet of metal 1.5
inches long by 0.5 inch wide and is drilled to accept two female coax connectors
11 and 12. Before the coax connectors are soldered to the mount, the metal is
folded so that each end is perpendicular to the center which serves as a base.
Once assembled, the coax mount is then fixed to the probe card 13 wherever
space is available.
The mount may be folded in a "V" or any other suitable configuration to
prevent the coax male connectors, on the cables 14 and 15, from hitting each
other or the probe card.
Guard shields can easily be added to prevent stray capacitance during critical
testing procedures. Trimmer capacitors may also be installed to aid circuit
balance and line compensation.
Page 2 of 2
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