Joel, Section 6.8 of IPC-A-610C covers HV soldering. I can tell you from several years experience with HV soldering that the illustrations must be used as guidelines only. It is near impossible for an operator to make a perfect sphere or hour-glass shape as shown in the illustrations. Inspectors must be aware of this. The important point to remember is that all joints must be smooth, that is, no sharp edges or protrusions. Also see paragraph 13.2.3 of J-STD-001C. Bob Robert Barr Manufacturing Engineering Formation, Inc. Voice: 856-234-5020 x3035 Fax: 856-234-6679 email: [log in to unmask] -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Joel Miller Sent: Wednesday, October 25, 2000 8:25 AM To: [log in to unmask] Subject: [TN] Ball soldering for high voltage PCB assembly I am new to this list. I am looking for information pertaining to Ball Soldering for high voltage PCB assembly. Is there a IPC standard or a procedure on how to do this technique? Joel Miller ---------------------------------------------------------------------------- ----- 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 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 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 ---------------------------------------------------------------------------------