I agree with Kathy, We typically designate no more than three repairs per assembly, unless it is a special need, (only one left in existence). but it depends on the complexity of PWB, cost of PWB, and experience of repair tech that will govern the number. Tom >From: Kathy Kuhlow <[log in to unmask]> >Reply-To: "TechNet E-Mail Forum." <[log in to unmask]>, Kathy Kuhlow ><[log in to unmask]> >To: [log in to unmask] >Subject: Re: [TN] Limits to Lifted Pad/Open Trace >Date: Mon, 26 Feb 2001 09:01:02 -0600 > >Typically I have used limitations such as no more than 3 pads or traces per >assembly as long as the pads and traces can be repaired with a high degree >of assurrance and per the IPC-7721 guidelines. I have seen other >facilities that use the golden number 5 but with no reasoning behind it. > >Kathy > > >>> [log in to unmask] 02/26/01 03:04AM >>> >Hi! I would like to know if there are any standards or norms as to how many >lifted pads and open traces are allowed for repair within a printed circuit >board. Does anyone know any guidelines to this? I know IPC says that it >depends on the customer, well most customer don't know or don't say. Hope >you guys have more quantitative answers here... > >--------------------------------------------------------------------------------- >Technet Mail List provided as a free service by IPC using LISTSERV 1.8d >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 delivery of Technet send the following message: SET >Technet NOMAIL >Search previous postings at: www.ipc.org > On-Line Resources & Databases > >E-mail Archives >Please visit IPC web site (http://www.ipc.org/html/forum.htm) for >additional >information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 >ext.5315 >--------------------------------------------------------------------------------- ><< TEXT.htm >> _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------