IPC-A-610C provides requirements for use of spacers. See section 5.2.6.1 starting on page 5-13. Jack >>> [log in to unmask] 06/20/01 05:50PM >>> Lou, Not sure how critical your spacing requirement is, but a wire doesn't sound like a consistant height measurment assuming it can be held in place. I know of a supplier of standoffs (Bivar, http://www.bivar.com/) which has both permanent, i.e. leave on the assembly stanoffs and those which can be washed away (I believe they are made from starch). I've used both types successfully. Hope this helps. Mike Di Giacomo Process Development Engineer WorldHeart Corp. -----Original Message----- From: Lou Hart [mailto:[log in to unmask]] Sent: Wednesday, June 20, 2001 6:21 PM To: [log in to unmask] Subject: [TN] Spacers TechNetters, our manufacturing people have asked me if it is OK to use spacers to assure proper height of radial leaded components. They have been using short wire segments as temporary standoffs, which are removed after wave solder. The spacers would stay in place, so the customer would see them. I've contacted the customer's engineering for guidance, but wanted to get TechNet input about the removable wires vs. leave-in-place spacers. Thanks for any comments. Lou Hart ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 --------------------------------------------------------------------------------- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------