FLEXIBLE MICROCIRCUIT SPACE TRANSFORMER ASSEMBLY

摘要

A space transformer (50) for electrically interconnecting a probe head to a printed circuit board, which includes a flexible multilayer circuit (54) with device under test contact pads (64) formed on a first side (58) and printed circuit board contact pads (66) formed on a second side (60). Electrically conductive circuit traces (62) extend between device under test contact pads (64) and printed circuit board contact pads (66). A shim plate (56) is fastened to a periphery of first side (58) of flexible multilayer circuit (54) and a bottom plate (52) is fastened to a periphery of second side (60) of flexible multilayer circuit (54). Bottom plate (52) has a plurality of internal apertures (72), which are aligned with printed circuit board contact pads (66) and separated by bottom plate stanchions (74), which are aligned with device under test contact pads (64). A plurality of interconnects (68) are bonded and electrically interconnected to printed circuit board contact pads (66) and extend through internal apertures (72).