Bill Kasprzak: - A cold solder connection is identified by Defect 20 of Table 11-1 (Defect 6 applies only to poor/non/dewetting). - Note that par. 9.1.1 says "shall" which (according to par. 1.4) means the requirement is mandatory for Class 3 Products, and mandatory for Class 2 Products only if there is no evidence of following a documented process control program. So if you have a documented process control program for producing Class 2 products then it is arguable if any of the requirements of par. 9.1.1 apply. - It would seem that your process control plan would cause 100% inspection of the "lot" for cold solder connections (see par. 12.2.e). It would also be reasonable to think that your process control plan would identify the process corrective action (see par. 12.2.d and 12.2.f) to be taken when such a small number of connections (3750) are sampled. Hopefully you don't start tweaking processes in response to single defects. Normally I would expect to have the results of identical (serially run) "lots" pooled to achieve a better overall picture of the processes. - "Normal" touch (aka Rework) is discussed by par. 11.1 which says that defects shall be documented prior to rework. The "shall" says that this requirement applies only to Class 3 Products (and Class 2 Products if you don't have a process control system in place). If you are building Class 3 Products, or Class 2 Products under a documented process control plan then you have to identify the discrepant condition as a defect prior to rework (hint, this sort of attribute data can be used to measure the health of the process only if it is actually documented prior to rework). - I think that most folks would fix the cold solder defect and ignore the process control considerations. Realistically, a cold solder connection is pretty unusual in a wave solder system and, if present, would probably not be a single occurrence. Hope the above sheds some light. Jim Moffitt ################################################################ 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 ################################################################