Evamaria: The J-STD-001 and the IPC-A620 are intended to always have the same process/quality requirements. The newer solder coverage requirements involve several different perspectives as follows: Minimum Wrap Area: Solder fillet cover 75% of the required wrap (100% if wrap less than 90 degrees) Minimum Wetted Height: 75% of the Wire Diameter (D) Wetted Fillet: 50% of the Wire Diameter This means solder must as a minimum WET up 75%D but the solder fillet may undercut the wire but must have a FILLET 50%D up the sides of the wire. I hope this explanation clarifies the intent of the requirements. Gregg Owens | Sr. Technical Writer Wavestream Corporation (909) 599-9080 x 484 | [log in to unmask] -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Evamaria Jones Sent: Monday, July 11, 2011 1:52 PM To: [log in to unmask] Subject: [TN] J-STD-001E 5.5 and IPC-A-620A 4.9 Terminal Soldering I am confused. Is there a conflict between soldering to terminals requirement in 620A and J-STDE? I thought I understood the concept of height (climb on wire) of solder. Unfortunately, I can not interpret the depression percentages. --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 16.0 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 For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 16.0 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 For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------