On some boards, we've had to apply flux to the topside to promote wicking up to the topside. Especially for square pegs in round holes. We run noclean with nitrogen too! You'll have to be careful though not to spead the flux out on the neighboring components. [log in to unmask] on 09/30/99 02:32:19 AM Please respond to [log in to unmask]; Please respond to [log in to unmask] To: [log in to unmask] cc: (bcc: Jason Smith/Lex/Lexmark) Subject: [TN] Wave soldering Hi all, What is the minimum vertical fill of solder for plated through holes ? We have some problems to obtain the 75% requested by IPC-A-610 for a class 2 board. In fact, the board has a thickness of 3,2 mm. We use a no-clean flux and the wave is under nitrogen. Is there any special criteria regarding to the thickness of the board ? Has anyone succeeded in obtaining a correct solder filet for thick boards ? Thanks, Vincent Bada Process Engineer Alcatel Etca Charleroi Belgium ############################################################## 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 ##############################################################