Bob, You had to select a family of similar components in order to create you new component. The component that you made it from contains industry assumptions for those items you question. If you are unsure of what to use, copy those assumptions and you should be safe. Regards, Gary Ferrari Executive Director IPC Designers Council (860) 350-9300 Fax (860) 350-9309 [log in to unmask] >>> "Vanech, Bob" <[log in to unmask]> 04/16/98 08:09PM >>> Need help in generating a simple land pattern and comments from the assembler. Our land pattern expert is busy, so I decided to generate a footprint for a MIL-PRF-55681/4E, CDR12 style ceramic cap...Not a problem...WRONG !!! The IPC land pattern calculator asks very embarrassing questions like "Fab Tol", "Place Acrcy" and the ever popular "Solder Joint Design Goals" Do I really have to talk to a group of people to get those numbers or are there "rule-of-thumb" numbers that I can use ??? I would think that those numbers could also be assembler dependent. Suggestions welcomed !! Also, are there any assemblers out there that would like to comment on using this .055 X .055 part. Remember that this is a family forum and young children may be reading your comments. :) :) Thanks in advance for all help/suggestions/comments. Enjoy.. Regards, Norden Systems Bob Vanech Norwalk, Ct. ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ 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 web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################