Stepped PCB for probe card, probe card having the same and method for clamping the probe card

摘要

A stepped printed circuit board for a probe card and for clamping by a testing machine is disclosed. The stepped printed circuit board includes a main body and a protruding body. The main body has a conductive circuit pattern arranged therein and a border area for the clamping of the testing machine. The protruding body is joined to a bottom side of the main body beyond the border area and defines with the bottom side of the main body an elevational difference. The protruding body has a conductive circuit pattern arranged therein and electrically connected to the conductive circuit pattern of the main body.