01/30/2013–RBP Chemical Technology Inc., Milwaukee, Wis., a developer, manufacturer and distributor of high performance chemicals and consumable supplies, announced today its asset acquisition of RD Chemical Company, Mountain View, California-based RD Chemical has been supplying application-specific process chemicals for the printed circuit board, chemical milling, medical implant device, and semiconductor packaging and test equipment industries for more than 30 years.
Antifoam is unfortunately a necessary evil for developing and resist stripping spray processes. I say unfortunate because antifoams are typically petroleum- based products that we do not want on the panel.
However, the surfactants which are in the resist are dissolved into the developer or resist stripper bath and must be controlled. If this foaming isn’t controlled, it can lead to not only a mess, but a loss of spray pressure, due to pump cavitation.
Hey Rob, my tin stripper works great most of the time. However, when I run high aspect ratio boards greater than 8:1, I am seeing tin in the hole. What’s wrong?
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