Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


How many thicknesses of the Intermetallic Cimpounds (IMC) is good?

Views: 752

#83465

How many thicknesses of Intermetallic Compounds(IMC) is good? | 24 September, 2019

Well, there may be a misunderstanding that people think the IMC layer grows the thicker the more strong soldering strength. Actually, the IMC layer can be grown and distributed evenly at the interface between Cu-based, Ni-based and Sn-solder will be enough.

Once the IMC layer grows too thick and over 5um then it will become brittle and soldering strength will be reduced.

Your comment.

reply »

Reflow Oven

Led testing color sensors