Uday I saw a improvement when I changed from a No Clean flux 1.8 to 2 % solids to a Rosin based flux with 4 % solids, the number of bridging in paralel conectors decreased, the lenght of the leads are important also. A good DFM practice is put this conector in perpendicular direction with the wave ( unfortunally due to many reasons this is not always followed ... ). Once we have to "live'' with 100% bridging due to bad design. I saw at soltec site one device that makes a kind of localized touch up just after the lambda wave ( atached with the solder pot ) to remove bridging from components, I don't know if works well but it is another solution ... ( unfortunally my internet is down and I don't have the site address ) Jorge Dourado de Santana Maintenance / Process Engr Microtec - Brazil > To: [log in to unmask] > cc: (bcc: Shean Dalton/ElectrovertUS/Cookson) > Subject: [TN] 50-mil pitch two row connectors > > > > > Hello All > > We have 50-mil pitch two row TH connectors on some of our boards. The > direction of flow in wave is parallel to the row of pins. This part always > bridges on the last pins as there is lot of drag at the end. We also tried > to add a thieving pad at the end of the last pin in the direction of flow > to help, but the test results didn't help much. (only 50% yield). > > Does anyone has experience with this case? Any help is appreciated > > Thanks > Uday > > ############################################################## > 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 > ############################################################## > > > > > << File: pic05092.pcx >> ############################################################## 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 ##############################################################