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A fixture is provided which allows for plating individual connector tabs of a circuit card which may have become damaged during processing.
English (United States)
This text was extracted from a PDF file.
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Circuit Card Fixture
A fixture is provided which allows for plating individual connector tabs of a
circuit card which may have become damaged during processing.
As shown in the figure, fixture 10 consists of a block of non-conductive
materials such as PVC. A locator pin 12 on circuit card 13 aligns conductor tabs
14 and 15 with indexed holes 16 and 17 when inserting the connector end of
card 13 into slot 18. Tapered conductive pins 19 are inserted through holes 16
and/or 17 to make electrical contact with any tabs 14 and/or 15 that may have
been damaged. Pins 19, which are steel plated with palladium, are then
connected by suitable wiring to a power source. Fixture 10 with card 13 in place
is submerged in a plating solution for deposition of a conductive layer on the tabs
contacted by pins 19. Slots 20 and 21 in fixture 10 allow venting of gases
generated from the solution during plating. Prior to placing card 13 in fixture 10,
the tabs are cleansed with an alkaline cleaner, rinsed and then submerged on
the plating solution. The plating process involves plating with nickel hardened
gold, rinsing with a solution, then submerging to plate the damaged tabs with soft