Ryan, I am assuming that this is a two-row connector (three row will be a problem) and the connector can withstand reflow temps. If you have enough room on each side of the connector to print the required paste volume for each pin (the AMP or Phil Zarrow's ITM calculations will help), and your pin-to-hole ratio is tight enough, the protruding lead length is kept short, your paste is respondent to the PIH process, and your board is not too thick (if thicker then .062" you will have a harder time), also I've found solder mask (especially most LPI's) help the paste wick to the lead. Also, it helps if you're quality spec allows <100% filled hole. Once you've run the experiments and get the above correct, it is a very repeatable process, and worth the effort! Especially if these connectors are all you are waving, and you can eliminate wave solder on the board!!! Good luck! Jeff Hempton United Technology Electronic Controls ______________________________ Forward Header __________________________________ Subject: [TN] Fine Pitch Pin-In-Hole Author: Ryan Jennens <[log in to unmask]> at Internet Date: 8/13/98 11:38 AM Mornin all! We are going to attempt a pin-in-hole (intrusive reflow, etc.) trial and I am curious whether we will have more trouble with fine pitch (25 mil) connectors than a larger pitch. Obviously we will have to be more careful,. but does pin-in-hole lend itself to problems with finer pitch? More so than wave soldering? If we are getting two shorts (one on each row of connectors, trailing two pins - need solder thieves designed in, or air knife) per board with waving, will pin-in-hole eliminate these. I guess we will have more trouble getting enough paste into the hole. Let me know if the fine pitch will add headaches. Thanks a lot! Ryan Jennens Phoenix Engineering Design ################################################################ 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 ################################################################