Ivan, We need to use low solids fluxes of the type 1.8 or 2% solid content. There are some self cleaning probes also available (I saw some ad long time back). If you are using the spray fluxer than you may reduce the amount of flux applied to the board. regards Sunil Gupta Manager - Process Engineering Ivan Barrios <[log in to unmask]> on 27-07-99 00:39:56 Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to [log in to unmask] To: [log in to unmask] cc: (bcc: Sunil Gupta/TTL) Subject: [TN] No clean flux residue Hello Technetters: Being new to the list, I do not know if this issue has been discussed in the past, so here goes. What can be done to minimize/eliminate the residue left by the no clean fluxes on the PCB's? We currently have a big issue with residue not allowing our test pin probes to make contact. We have implemented cleaning the probes on a regular basis, but I want to eliminate the issue altogether. If this has been discussed, please point me in the right direction (archived responses). If not, I would really appreciate your help. Ivan Barrios Process Engineer Conexant Systems El Paso, TX, ############################################################## 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 ##############################################################