Ted - currently there is no IPC standard for OSP. This finish will be the
next standard to come from the 4-14 plating committee and will be the 4555
document. As a user of OSP coating, my thickness ranges from 1500 to 3500
Angstroms for one supplier and 3000 to 5500 for another supplier.


Regards,

Gerard O'Brien
Photocircuits Corporation
Co-chairman 4-14

-----Original Message-----
From: Ted Kong [mailto:[log in to unmask]]
Sent: Thursday, November 11, 2004 8:14 PM
To: [log in to unmask]
Subject: [TN] OSP standard

Hi fellow Technettes,

Is there a standard on OSP thickness and tolerances?
If anyone is using OSP, please let me know what
thickness and tolerance are being specified.

Thanks all in advance.

Ted Kong

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