My buiness unit has a design problem that requires a unique solution. When possible, we build multiple assemblies from a common PCB. There are unique design circumstances (particularly broadband filters) where a component in one assembly might be a resistor and in another assembly might be an inductor or a capacitor -- using the same circuit board and located in the same schematic position in the circuit. We want to find a method where we can specify one component with one reference designator, that will allow multiple component types to be placed (R, L, or C). The only standard I can find is a reference designator of 'E' which can be used for a "miscellaneous electrical part". Is there some precedent or solution that any of you have found that allow multiple types of components to be placed in the same electrical and physical location in a circuit & board? Please copy me on your reply at [log in to unmask] Thank you. I would appreciate a speedy reply.