Bev this test method is very outdated. Ask yourself if you will be required
to use a d-limonene cleaner (defluxer) on your final assemblies?
Many part markings will pass that specific test and then fail when exposed
to your actual wash product.
This part of the IPC standard was generated with input from the days when
d-limonene cleaners were one of a select few alternative to ozone depleting
solvent cleaners. Also it closely parallels the requirements of Mil-Std-202.
Please contact me off-net if you have any further questions.
Charlie
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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bev Christian
Sent: Thursday, October 28, 2010 2:11 PM
To: [log in to unmask]
Subject: [TN] Required solvent for IPC-TM-650, Method 2.3.4
TechNetters,
The IPC test Method, "Chemical Resistance, Marking Paints and Inks" calls
for a "terpene defluxer consisting of a minimum of 90% d-limonene and 10%
surfactant". One supplier says their minimum order is 3 GALLONS (U.S., I
presume.). But whether they are U.S. or imperial gallons, I will be dead,
let alone retired before we would use up all this stuff. Any suggestions at
to what I can buy in a small jar or spray can that meets the IPC requirement
that I can buy?
Bev
RIM
PS: Perhaps I am being anal, but shouldn't that read "a minimum of 90%
d-limonene with the remainder being surfactant"? Using 90% limonene and 10%
makes the use of the word "minimum" superfluous.
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