To add little to it Marcelo: On Werner's recommendation we did employ the Anatech's detector and it works great . On the other note the recommendation in the IPC-SM-785 to daisy non linked componentry (for some components you won't be able to find linked dummies) with silver epoxy proved to be a pain ; because regardless of all precautions all of the faults so far recorded was cracked epoxy links . If you will go that path see if you can use the epoxy dots only to attach wire links (to avoid cycling epoxy links); it's laborious but worth it ; even on cleaned test board components will not hold the epoxy as well as the solder . I'm sure Werner can throw more light on it still ; this was the only loose point we've had on the exercise ; now we know bit better . I think . See you Paul Klasek http://www.resmed.com > ---------- > From: Werner Engelmaier[SMTP:[log in to unmask]] > Sent: Saturday, 22 August 1998 4:21 > To: [log in to unmask] > Subject: Re: [TN] Developments in reliability testing > > Hi Marcelo, > As part of the contribution to the IEEE Compliant Lead Task Force, > Bell Labs > developed the software to monitor intermittent failures, but not get > overwhelmed with the data logging. An improved version of this > software is > available from Anatech (781-245-7825) as part of the package sold with > their > Event Detector, that is designed to monitor daisy-chains for > short-term > (microsecond range) intermittent resistance drops. This Event Detector > is also > to my knowledge that meets the failure definition requirements of > IPC-SM-785. > Do not use multiplexed equipment for this purpose. > > Werner Engelmaier > Engelmaier Associates, L.C. > Electronic Packaging, Interconnection and Reliability Consulting > 7 Jasmine Run > Ormond Beach, FL 32174 USA > Phone: 904-437-8747, Fax: 904-437-8737 > E-mail: [log in to unmask] > > ################################################################ > 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 ################################################################ ################################################################ 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 ################################################################