Kenny, Refer to J-STD-001C section 9.2.4.3 "Partially Visible or Hidden Solder Connections". Basically says that such connections are acceptable as long as the joints you CAN see are acceptable and process controls are maintained. ie: if the visible joints are good, the invisible ones must be too! In a former life we spent a lot of time and money x-raying solder fill of TH soldered connectors with invisible joints. This was because the customer required the x-ray inspection. We hardly ever saw cause for concern. My experience was that the most difficult to solder pins (in regards to being tied to the most thermal plane within the PCB) are typically the power and ground pins. Conventional connector designs almost always have power and ground pins as pin 1 or the last pin(s) of the connector row(s), and these are almost always the outer (and visible) rows of the connectors. Hope that helps, Kevin Glidden -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D. Sent: Tuesday, February 28, 2006 11:47 AM To: [log in to unmask] Subject: Re: [TN] Solder Joint Inspection Are they wave-soldered? -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Bloomquist, Ken Sent: Tuesday, February 28, 2006 10:42 AM To: [log in to unmask] Subject: Re: [TN] Solder Joint Inspection Hi John, Your assumption is correct, it is a through hole board. We have thermal spokes around all internal layers but it still sucks up a lot of heat. KennyB -----Original Message----- From: John Maxwell [mailto:[log in to unmask]] Sent: Tuesday, February 28, 2006 8:20 AM To: [log in to unmask] Subject: Re: [TN] Solder Joint Inspection > Ken, I assume that these are thru hole solder joints. If they are then the only inspection tool is x-ray. Was or could thermal relief be used around these holes? John --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------