Mark, I don't understand. If you are going to: "break the solder joint of individual fine pitch leads when it appears to be a poor joint from visual inspection", how is this not destructive?? regards, Bev Christian Nortel > ---------- > From: Mark Wythes[SMTP:[log in to unmask]] > Sent: Friday, August 28, 1998 5:14 PM > To: [log in to unmask] > Subject: [TN] SMT gull wing solder joint force test? > > Are there any standards for testing the solder joint > mechanical strength for surface mount gull wing lead? > > We are wondering if there are any standards and test > methods for the force required to break the solder joint of > individual fine pitch leads when it appears to be a poor joint > from visual inspection. We would like to confirm a poor joint > through some simple non-destructive test in our receiving > inspection area when receiving assembled PCB's from our > board assembly supplier. In other words, this is finished > product. Our idea was to use a force gauge pushing on the > side of the lead and measuring force to break the joint. But > we don't know what is acceptable without a lot of testing. So, > would this be a valid test of a solder joint, are there > established methods for a test like this, and are there > acceptable ranges of force for different types of SMT > packages? > > ################################################################ > 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 > ################################################################ > ################################################################ 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 ################################################################