I would second the motion for Jeff's input. We have pretty much done the same thing. Made one shape standard and one symbol standard for all diode's,led's & transistor's. Pin 1 is always the cathode. , no matter what the spec sheet etc. calls out. Now we have had some weird looks and questions from some engineers at times, but when you show them and say does it match the schematic and do the functions of each pin match usually they see the light. Also TO-92 transistors is also a similar problem where different mfg.'s call d, s & g or e, c & b different pin numbers, physically/electrically they are equivalent but between vendors the pin numbers are different (why they do this still amazes me). We did the same here made one shape and made sure all our symbols using this shape reflect those pin numbers. Now from time to time an engineer will blame the cad library because the spec sheet that the engineer happen to look at when they can't get a circuit to work does not match the board markings, (and that is not to say the librarian never makes a mistake) but in this case by keeping it standard this way we have not missed yet on any of these type of parts. The circuit needed tweaking not the library. From the librarian's viewpoint I think by standardizing diode,led,transistor, etc. pin #1's makes for more consistency and less error entering parts. Also once the rest of the departments using this data become familiar with the standard I believe they will embrace it too. Robert M. Wolfe [log in to unmask] ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################