Well may be the inspectors need a bit of training... Proper work is only done with either great luck (which is not reliable) or just plain old training. Besides "not every reject is a defect and not every defect is a reject". You have to review doubtful situations. Advise inspectors, in a written format, of any changes you want done to their inspection methods. Writing your own internal inspection documentation might not be a bad idea either. Alain Savard, B.Sc. Chemical Process Analyst CAE Electronics Ltd. e-mail: [log in to unmask] -----Original Message----- From: Howieson, Rick To: [log in to unmask] Subject: Re: [TN] PE: PCB Inspection Alain, Couldn't help but respond to your comment on toys vs hi-rel. We build space flight boards and very few (i.e. majority) of the receiving inspectors have a clue to what they are inspecting. You would be amazed of the 101 reasons I've seen to reject a board. Just a sample, "thermal pads called etching shorts". Nuff said. Rick >-----Original Message----- >To: [log in to unmask] >Subject: Re: [TN] PE: PCB Inspection > >Incoming inspection may be required in some instances... It all depends on >the reliability you require for the boards. I don't think that most company >dealing with high reliability products will dock-to-stock as eagerly as >throw-away manufacturer. It also depends on assembly value, sometimes >inspection may reduce headaches down the road. I've seen board burn in the >past. These were supp0sed to be excellent board by the CoC... turned out >they weren't that good. > >All processes, no matter what have to make sense. Gather data if and when >possible. Keep your eyes open. I don't think that the people dealing with >cheap assemblies, like most toys, are playing in the same ball park as >people dealing high reliability medical or space equipment. > >Alain Savard, B.Sc. >Chemical Process Analyst >CAE Electronics Ltd. >e-mail: [log in to unmask] ############################################################## TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################