Letter 40028

Difference between two plating notes for RoHS compliance  

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Hello,

Can anybody let me know what is the significant difference betwee these two notes listed below for Rohs compliance.

1. Underplate with 5 micron minimum Nickel. Plate with 10-15 micron matte tin to BS-6137 [link is to spec at TechStreet]

2. Matte Tin plate per ASTM B545 [link is to spec at TechStreet], class "A" over Sulfamate Nickel per AMS-QQ-N-290 [link is to spec at TechStreet], 0.0001inches, minimum.

Thank You.

Chandrashekar Srinivas
control aolutions - Bangalore, Karnataka, INDIA

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The second^firstspec sounds twice as thick, Chandrashekar. But one cannot really plate in accord with a spec that one does not have. Acquiring them is probably step 1, and see if they clarify the issue. Good luck.


Ted Mooney, P.E. 
finishing.com
Brick, New Jersey

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