Patent ID: 6712987
Filing Date: 2004-03-30
Classification: G01K

Abstract:
A process for manufacturing a temperature-dependent measuring resistor with low mass having an electrical conductor path with at least two connection contact pads arranged on an electrically insulating surface of a metal substrate, wherein a portion of the conductor path and of the electrically insulating surface span at least one recess of the substrate in a bridge manner and the conductor path is arranged in a plane, the process comprising:providing a metal etching stop layer between the metal substrate and the electrically insulating surface of the metal substrate, wherein the metal etching stop layer comprises a material selected from the group consisting of Ti, Pt, Ni, and combinations thereof; providing the metal substrate on its reverse side with a photo-lithographic enamel structuring; and conducting a wet chemical etching from the reverse side of the substrate up to the previously applied metal etching stop layer.