Mail*Link(r) SMTP               FWD>Legend 

Emico,

In general, most legends and other markings should meet the adhesion and
permancy requirements of other insulative coatings materials such as solder
resists.  As such, many companies use the "Tape Peel Test" for most deposited
ink legends (such as screen printed or stamped) to evaluate the adhesion of
the marking to it's mounting surface.  The A-600(E), section 2.8 "Markings"
currently doesn't address the adhesion of markings.  In general, markings
should have similar adhesion and permanancy  requirements as other coatings. 
As such the Tape Peel Test in the IPC's Test Methods Manual, IPC-TM-650,
Methods 2.4.1 or 2.4.28.1 are adapted to a Tape Peel Marking Test (in
tradition with the IPC's policy for documentation, copies of both of the test
methods are located in the back of the A-600E).

Ralph Hersey
[log in to unmask]

--------------------------------------
Date: 8/27/96 8:40 AM
From: tonghh
To technet users ,

Do anyone have any idea of IPC spec for legend tape test. If there is ,
please let me know .Thanks .

Emico.

From: tonghh <[log in to unmask]>

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