The vias are usually filled during the wave process. However, the board house can fill them during manufacture of the board. 18 - 19 mils is a standard size for vias. If they are to carry high current, perhaps larger vias may be in order. > -----Original Message----- > From: Ken Patel [SMTP:[log in to unmask]] > Sent: Wednesday, April 28, 1999 7:39 AM > To: [log in to unmask] > Subject: [TN] How to fill Vias? ... > > I am in dilemma. We have designed a board which require double reflow > process with selective wave operation. Here is the problem - How can I > get > vias filled solder which will carry 1 amp current. Some vias are > underneath > the components and many are away from the selective wave fixture > opening. > > Finished hole size of the via is 18 mils. Can fab house fill the vias? > > re, > Ken Patel > ______________________________________________________ > Ken Patel Phone: (408) 490-6804 > 1708 McCarthy Blvd. Fax: (408) 490-6859 > Milpitas, CA 95035 Beeper: (888) 769-1808 > > ################################################################ > 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 ################################################################