TECHNET Archives

January 1998

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:
Re: FAB: Peroxide Microetch Degreasers
From:
Michael Carano <[log in to unmask]>
Reply To:
TechNet Mail Forum.
Date:
Wed, 7 Jan 1998 21:19:15 -0800
Content-Type:
text/plain
Parts/Attachments:
text/plain (49 lines) 
J. Warhelere wrote:
>
> An oxymoron?  ...
>
> Does anyone know of a combination persulfate microetch and acid cleaner?
>
> I want to introduce some old equipment and have limited chambers.
>
> By leaving copper in acid cleaners one can introduce an etch, but
> smutting occurs in the ones I am familiar with.
>
> Thank you,
> J Warhelere
>
> [log in to unmask]
>
> ##############################################################
> TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
> ##############################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
> To subscribe:   SUBSCRIBE TECHNET <your full name>
> To unsubscribe:   SIGNOFF TECHNET
> ##############################################################
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information.
> For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
> ##############################################################How many chambers with rinse included do you have in all? Another
consideration is the wetted metals if any in the process chasmbers. A
single step peroxygen baswed microetch can remove chromate coatings from
the copper as well as micro etch the copper. However, if you desire some
removal of organic residues as well as copper, I would suggest either an
alkaline cleaner followed by the microetch step, or an acid cleaner with
surfactants which will remove some of the organics, and remove any
chromate anti-tarnish.Follwe this with a rinse, then the microetch, if
you have the chambers.

Good luck

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information.
For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
##############################################################

ATOM RSS1 RSS2