TECHNET Archives

November 2007

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Sherif Refaat <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Sherif Refaat <[log in to unmask]>
Date:
Mon, 19 Nov 2007 10:35:46 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (31 lines)
Hi;

What are the steps to manufacture plugged vias in pads. The following comes 
to mind

- Electroless copper.
- Apply photo resist that exposes only the vias.
- Electro plating vias only.
- Strip resist.
- Plug vias with epoxy.
- Planarization.
- Electroless copper again (to cover the epoxy that is plugging the vias).
- Continue as usual.

Is there a better way? Would using panel plating be a better alternative 
(The board has 0.005" lines. 1/4 oz copper foil may be helpful)?

Thanks in advance.

Sherif

---------------------------------------------------
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
-----------------------------------------------------

ATOM RSS1 RSS2