A range pattern is matched to a block of an IC layout by slicing the layout block and the range pattern, followed by comparing a sequence of widths of layout slices to a sequence of width ranges of pattern slices and if the width of any layout slice falls outside the width range of a corresponding pattern slice then the layout block does not match the range pattern. The method includes applying a carrier layer containing aluminum to the component surface. The trimdac may include a programmable Read Only Memory or other suitable memory device. The damper further includes a blade attached to the cylindrical wall and designed to push the fluid from one to the other of the chambers when the steering pin is rotated relative to the steering sleeve. A passivation layer against carbon and nitrogen reaction can be provided over the material.