Fixture tray, test system and positioning rod for testing integrated circuit boards

Abstract

A fixture tray for IC carrier board testing includes a base that defines the length, width, and height axes, and two positioning rods extending along the length axis and disposed on the base. At least one positioning rod is slidable relative to the base along the width axis to adapt to the width of the carrier board and is fixed to the base so that the carrier board is clamped by the two positioning rods. Each positioning rod includes a stepped main step extending downward from one edge of its top surface. The main step includes a clamping surface and a bearing surface. The clamping surfaces of the two positioning rods face each other, and at least one of them is formed of an elastic cushioning material. The carrier board is clamped by the clamping surface and rests on the bearing surface with its non-test contact area on its lower surface. There is a gap between the test contact area and the base. This invention can meet the testing needs of carrier boards of various sizes and multiple carrier boards, and has high testing flexibility.

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