Occasionally we hear non-green mask blamed for all sorts of malady. The latest was a wifi antenna that only "passed" (what, I don't know) with green mask.
Is there any truth to this stuff?
Do the manufacturers ever SM-840 qualify non-green?
Chris
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dennis Fritz
Sent: Friday, September 03, 2010 10:03 AM
To: [log in to unmask]
Subject: Re: [TN] NTC - green solder mask - IS NOT "GREEN"?
All - We need a current description of the pigment in green solder mask. If it is still copper phthocycanine green, it is not "GREEN"!! That pigment is highly chlorinated blue copper phthalocycanine. That is one reason that the Japanese used a blue colored label in the past to signify "eco-friendly". Maybe we need to all specify clear or blue mask to be more "GREEN". I chuckle that the environmental lobby wants us to be more "GREEN", but we have to show that by using the color blue. In the early 1970's, my second job at DuPont was making very stable blue and green copper phthalocyanine pigments.
Denny Fritz
-----Original Message-----
From: Pete Houwen <[log in to unmask]>
To: TechNet <[log in to unmask]>
Sent: Fri, Sep 3, 2010 9:36 am
Subject: Re: [TN] NTC - Re: [TN] Is green solder mask the default by any IPC standard or is it default by common usage?
When we switch many (but not all) of our boards to RoHS, we specified red
ask to make it very obvious to manufacturing, field service, and repair depot
hat it was a lead free only board, as opposed to the good old green. Any
evelopment or pre production boards are known company wide to be any
olor except red or green. Clear is preferred, to see the traces up to the
earest plane layer.
So now we've closed our captive plant, the offshore CM wants all green, all
he time, because red might add a few pennies to the board cost.
Pete
---------------------------------------------------
echnet Mail List provided as a service by IPC using LISTSERV 15.0
o unsubscribe, send a message to [log in to unmask] with following text in
he BODY (NOT the subject field): SIGNOFF Technet
o temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
o receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
earch the archives of previous posts at: http://listserv.ipc.org/archives
lease visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for
dditional information, or contact Keach Sasamori at [log in to unmask] or
47-615-7100 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 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
-----------------------------------------------------
______________________________________________________________________
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 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
-----------------------------------------------------
|
