TECHNET Archives

March 2013

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:
SOLDERMASK THICKNESS FOR SPRAY COATED MACHINE
From:
Ramakrishnan Saravanan <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Ramakrishnan Saravanan <[log in to unmask]>
Date:
Wed, 6 Mar 2013 10:19:45 -0600
Content-Type:
text/plain
Parts/Attachments:
text/plain (12 lines) 
Dear all,

                     I have been using LPI Soldermask (spray coated) for fabricating class 3 products. The problem is i am unable to achieve the minimum requirement of 0.7mil thickness. The solder mask thickness on the Epoxy is around 17microns, on the centre of the tracks is about 8 microns and on the knee of the tracks it is 4 microns. 

                     As per IPC-SM-840 , a minimum of 0.7 mil(17 microns) thickness is required. Is it possible to achieve 0.7mil on the knee of the tracks using spray coated system. 

regards,

R.Saravanan
 
 

ATOM RSS1 RSS2