SMTA International Conference Proceedings

Comparison Of Several PCB Final Finishes In A Mixed Flowing Gas Test Environment

Authors: Robert Veale and James Trainor
Company: Rockwell Automation and OMG Electronic Chemicals, LLC
Date Published: 10/16/2011   Conference: SMTA International

Abstract: One consideration of PCB final finish selection is the susceptibility to creep corrosion in environments containing atmospheric sulfur. In this study several PCB final finishes were subjected to a Battelle Class III mixed flow gas test to assess creep corrosion susceptibility. The PCB finish coatings tested were 1) Pb-free HASL, 2) direct palladium, 3) immersion silver, 4) OSP, 5) ENIG and 6) ENIPEG. The assessment method was an end-point visual examination focusing on the extent of creep corrosion products.

Key Words: 

PCB, corrosion, HASL, palladium, silver, OSP, ENIG, ENIPEG.

Members download articles for free:

Not a member yet?

What else do you get when you join SMTA? Read about all of the benefits that go along with membership.

Notice: Sharing of articles is restricted to just your immediate work group. Downloaded papers should not be stored on an external network or shared on the internet.


SMTA Headquarters
6600 City West Parkway, Suite 300
Eden Prairie, MN 55344 USA

Phone +1 952.920.7682
Fax +1 952.926.1819