Letter 24679

Aluminia PCBs  

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Hello,

I am wondering what type of pretreatment one can use on Aluminia before coating it with electroless Ni. And, if you have a PCB coated with Al, and want to etch a pattern on it, what etching agent would you use.

Has anyone heard of PCB:s with Al clad instead of copper clad to start with ???
Rgds Clarence

Clarence Hull
pcb - Salem, Oregon, USA

I didn't get it clear. Are you talking about alumina (aluminum oxide) or metallic aluminum? Or both? Etchants and procedure will vary tremendously depending on which one you mean.

Guillermo Marrufo
Monterrey, NL, Mexico