Fine Feature Assembly Issues vis a vis Lead-Free
Folks, We are all aware that the miniaturization of electronics continues unabated. As consumers we benefit from this phenomenon, as electronic assemb...
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Why Color A Flux?
Some flux height sensing equipment for flux reservoirs require a dye to be added in order to discern the level of a given flux pool. Colored flux can....
Clad Thermal Interface Materials
Continuing with the topic of thermal interface material options, a popular material choice is a clad metal thermal interface preform including multipl...
Flashback - Contamination
I think the most useful thing I learned from chemistry in college was cleanliness. The first day of chem. lab we were asked to fill our beakers with.....
Semicon Singapore
I am in Singapore for Semicon Singapore 2008. This is the first exhibition (that I can recall) that started on a Monday! It sure felt a...
Thermal Conductivity of a Metal Alloy, Scientifically Determined
Bob Jarrett gave an excellent explanation of the thermal conductivity of metal alloys and their relationship with electrical conductivity. It is as fo...
BGA Red Dye Penetrant Testing
Ok, so it happened again. Another urgent request was brought to me for action. This time it was a customer who had performed a Red Dye Penetration......
Communication
As an engineer in the semiconductor industry, there is always the possibility for you to travel to another country to troubleshoot a problem on a line...
Alloy Thermal Conductivity
Calculating the thermal conductivity of an alloy is not done by taking an average (or weighted average) of its elemental constituents. When two metals...
J-STD-004 Halide Test Requirements Update
The IPC J-STD-004 committee met at APEX last month. They are planning on releasing an updated specification. One positive change that is being made ...