At 12:00 AM 12/17/01 -0600, you wrote: >Date: Mon, 17 Dec 2001 00:00:05 -0600 >Reply-To: TechNet <[log in to unmask]> >Sender: TechNet <[log in to unmask]> >From: Automatic digest processor <[log in to unmask]> >Subject: TechNet Digest - 15 Dec 2001 to 16 Dec 2001 (#2001-781) >To: Recipients of TechNet digests <[log in to unmask]> > >There are 3 messages totalling 150 lines in this issue. > >Topics of the day: > > 1. tin compatalbe etchants (2) > 2. photoplotters > >--------------------------------------------------------------------------- >------ >Technet Mail List provided as a free service by IPC using LISTSERV 1.8d >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 delivery of Technet send the following message: SET >Technet NOMAIL >Search previous postings at: www.ipc.org > On-Line Resources & Databases > >E-mail Archives >Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional >information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 >ext.5315 >--------------------------------------------------------------------------- >------ >Date: Sun, 16 Dec 2001 20:27:06 -0600 >From: Adam Seychell <[log in to unmask]> >Subject: tin compatalbe etchants > >What are the known etchants useful for boards made with electroplated tin >etch resists ? We have been using alkaline sulfate based etchant which works >very well, even with a 1 um bright tin plating thickness. Ammonium >persulfate etchant was shown to attack tin. > >Also are there any advantages of stripping the tin when no solder mask will >be used ? >Date: Sun, 16 Dec 2001 22:33:28 -0500 >From: Afri Singh <[log in to unmask]> >Subject: Re: photoplotters >MIME-Version: 1.0 >Content-Type: text/plain; charset="iso-8859-1" > >have you had a chance to look at the Mivatec (Germany) ? >Their rep in USA is 480 777 7600 > >-----Original Message----- >From: Karla Thompson [mailto:[log in to unmask]] >Sent: Friday, December 14, 2001 11:58 AM >To: [log in to unmask] >Subject: Re: [TN] photoplotters > > >Thanks for the replies. > Anyone have an EIE plotter? Specifically the RP200 line? > > > >-----Original Message----- >From: Mark Hargreaves [mailto:[log in to unmask]] >Sent: Friday, December 14, 2001 04:28 >To: [log in to unmask] >Subject: Re: photoplotters > > >Hi Karla, >We currently have a 3-4 year old CSI (guess it's Gretag now) plotter. We're >happy with the images, speed and up-time. > >Regards, >Mark Hargreaves >EMDS > > -----Original Message----- > From: Karla Thompson [SMTP:[log in to unmask]] > Sent: Thursday, December 13, 2001 6:28 PM > To: [log in to unmask] > Subject: [TN] photoplotters > > I'm in the process of looking at Photoplotters and would appreciate >any > input any of you may have. We currently have a 5-6 year old Barco >Crescent > 30. I'm looking at EIE, Orbotech, and Barco/Mania. If any of you >have any > comments on those, or any others (?) I'd appreciate it. > > > Karla Thompson > CAM Technician > Electronic Controls Design, Inc > Tel: (503) 829-9108 > email: [log in to unmask] > > >---------------------------------------------------------------------------- >----- > Technet Mail List provided as a free service by IPC using LISTSERV >1.8d > 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 delivery of Technet send the following message: >SET Technet NOMAIL > Search previous postings at: www.ipc.org > On-Line Resources & >Databases > E-mail Archives > Please visit IPC web site (http://www.ipc.org/html/forum.htm) for >additional > information, or contact Keach Sasamori at [log in to unmask] or >847-509-9700 ext.5315 > >---------------------------------------------------------------------------- >----- > >---------------------------------------------------------------------------- >----- >Technet Mail List provided as a free service by IPC using LISTSERV 1.8d >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 delivery of Technet send the following message: SET >Technet NOMAIL >Search previous postings at: www.ipc.org > On-Line Resources & Databases > >E-mail Archives >Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional >information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 >ext.5315 >---------------------------------------------------------------------------- >----- > >---------------------------------------------------------------------------- >----- >Technet Mail List provided as a free service by IPC using LISTSERV 1.8d >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 delivery of Technet send the following message: SET >Technet NOMAIL >Search previous postings at: www.ipc.org > On-Line Resources & Databases > >E-mail Archives >Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional >information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 >ext.5315 >---------------------------------------------------------------------------- >----- >Date: Sun, 16 Dec 2001 23:16:46 EST >From: "<Rudy Sedlak>" <[log in to unmask]> >Subject: Re: tin compatalbe etchants >MIME-Version: 1.0 >Content-Type: text/plain; charset="US-ASCII" >Content-Transfer-Encoding: 7bit > >Adam: Please see below... > > > What are the known etchants useful for boards made with electroplated tin > > etch resists ? We have been using alkaline sulfate based etchant which >works > > very well, even with a 1 um bright tin plating thickness. > >Uh, Adam, you are probably using the best etchant known for Tin, and getting >away with thinner Tin than anyone using any other etchant. The only other >etchant suitable for use with Tin is a variant on what you are currently >using, and it is based on ammonium chloride....and most people in the world >use this one, and most people using this etchant need 5-6 um of Tin. > >Why do you want to change? > >Rudy Sedlak >RD Chemical Company Hi, I will be back on 12/17/01. Regards, Jong