I appreciate that there are possibly better ways to do things. There are both pros and cons to the way we choose. Right now we are not looking to change our PN system. That is a huge project in itself, and would take months and $$$ to implement. At the moment our system works and has worked for this company for over 20 years. I am just looking for some quick and dirty ideas how someone else with a similar PN system might choose or has chosen to name a PN for 0.1% precision. -----Original Message----- From: Robert Kondner [mailto:[log in to unmask]] Sent: August 26, 2010 2:32 PM To: 'TechNet E-Mail Forum'; Genny Gibbard Subject: RE: [TN] Resistor part numbers Genny, I have lived and breathed this part number stuff for about 20 years. I would bet your immediate reason for using a semi-intelligent part number system is so you can find things. Most apps give you a big list and you need to run down that list finding something. The second main use for the part number is having a unique ID that allows a specific part with specific characteristics to be specified in a list(BOM). What folk do is merge these two requirements into a single semi-intelligent part number. Problem is that naming system eventually needs to be reorganized but since the part numbers are in use you are stuck. With two people doing the "Naming" things also can run amuck. It does not have to be this way. What you can do depends on what existing data system you have in place and how far outside the box you are willing to go. Contact me off line bob <funny a in circle> kondner period com Thanks, Bob Kondner 410-821-1315 Index Designs Baltimore Maryland USA 21286 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Genny Gibbard Sent: Thursday, August 26, 2010 4:04 PM To: [log in to unmask] Subject: [TN] Resistor part numbers We use a semi-intelligent internal PN system. To date, our resistors are usually 5% or 1%. For 5%, we use 2 sig digits plus a multiplier digit for the value, plus a letter code to indicate size. For 1%, we use 3 sig digits plus a multiplier plus the letter code. We now have a requirement to make some 0.1% resistor part numbers. We are struggling with how to define it in our system. The thought was to do 4 digits plus a multiplier, but to add to the confusion, the parts are 1K and 2K21. This would mean the PN would have a number like 10000 for 1K and 22100 for 2K21. Does anyone have any other ideas? Genny ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------