I’m looking at Table 3-2 of IPC 6012BA1. Under Code C, Through Holes, Class
3, Minimum Wrap.
I interpret this to mean the copper extending from the hole wall wrapping
onto the surface (forming the annual ring) shall be a minimum of ½ mil (472
uin) for a distance of 1 mil (984 uin) from the hole edge.
This ½ mil is not including the foil or additional plating (i.e. capping the
via).
Am I reading this correctly?
Thanks,
Franklin D Asbell
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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
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
-----------------------------------------------------