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Ask the Experts Member |
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Grant MainTechnical Sales Manager Fineline VAR Ltd |
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40 Years in PCBs. Large and small companies in the UK and the US. Experienced Process Engineer, DFM, Materials, Impedance Control, Surface Finishes, etc. Working with Fineline now across the portfolio of manufacturers covering rigid, flex, rigid flex, ATE, Load Boards, MSAP, and other existing and emerging technologies.
Grant Main has submitted responses to the following questions.
Removal of Non-functional Pads from Inner Layers
There are many aspects and matters that should be considered with this. On a rigid PCB of 1.6mm thickness, not ...
Tented Via Options and Tradeoffs
When you say "tented" is this genuinely tented, or a partial covering? To tent in the old fashioned sense, you ...
Tented Via Options and Tradeoffs
When you say "tented" is this genuinely tented, or a partial covering? To tent in the old fashioned sense, you ...
Controlling Creep Corrosion
Not sure this is best directed at PCB manufacturers but my tuppence would be; Conformal coating of the PCB would ...
HASL Surface Finish and Coplanarity
As has been said, a 0.60mm suggests quite a large pitch device. Previously, I would have said down to 0.80mm ...
Adhesion Problems with Conformal Coating
Another point to consider (irrespective of the actual coating), is to ensure that the CTE of the coating is well ...
Via Wall Thickness Test
To the best of my knowledge, there is no failsafe way to verify the plated thickness of copper in a ...
Moisture Sensitivity Level for Bare Boards
Some excellent comments and recommendations here but another couple of points which should and need to be understood and appreciated. ... |
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