Rick Years past there were reliability tests conducted concerning compliant pin performance in support of specific programs for Mil Std applications. It is doubtful those tests can be reclaimed today. The testing was not a comparison one to another but a test to determine if the technology would support performance requirements of a particular product. It was assumed that they were not as reliable due in a great part to the need for performance in demanding environments of the specific product. This does not mean that they would not perform adequately given a benign performance envelope. There were several critical factors with regard to performance. One was tolerance build up in hole alignment, plating thickness, hole concentricity, etc. Most of these are PWB characteristics. By the nature he attachment there is a need for some disturbance of the metalized elements. If the dimensions are not closely controlled, there was a possibility of internal damage to the laminate due to mechanical stresses. I would assume especially critical with multilayer attachments. Additionally there is limited opportunity for repair. I believe that MIL-STD-2166 supplied detail on performance and qualification of the application. Mel Parrish ACI/EMPF One International Plaza, Suite 600 Philadelphia, PA 19113 [log in to unmask] www.empf.org 610 362 1200 x238 610 362 1290 Fax -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Mills, Rick (CXO1) Sent: Monday, January 17, 2000 7:05 PM To: [log in to unmask] Subject: [TN] Reliability of Compliant Pin VS Solder Tail Connectors A customer who is interested in our product has questioned the use of an edge card connector (90deg conn on edge of 0.060" PWB) because there is no solder visible in the PTH - just press pin, AKA "compliant pin" or "Action Pin". The connector plugs into a 0.150" backplane that also has compliant pin connectors. The customer wants to know if the connection of the compliant pin is as reliable as a non-press pin with solder fillet. I contacted the component manufacturer and received a 1978 tech doc that focused on insertion/retention forces VS PTH dias., but no specific references comparing press pin to solder tail. I am looking for less dated material, that may also include a comparison to solder tail. Does anyone out there have supporting evidence using an industry standard like Bellcore (TR-NWT-001217 or 000078), that speaks to the reliability of connectors using compliant pin technology? -Rick Mills ############################################################## 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 Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ############################################################## ############################################################## 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 Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################