Electronics Forum | Wed Jan 21 16:55:22 EST 2004 | patrickbruneel
Hi, Are you testing bare boards or soldered boards. Are the test probes in contact with soldered pads or contacting the copper with the osp coating (not soldered). If you could clarify this it would be easier to give some hints for probable causes.
Electronics Forum | Thu Jan 22 08:48:42 EST 2004 | patrickbruneel
Kris, You will need to change your probes to "bite" into the surface twisting probes specialy designed for copper surfaces. The surface hardness of copper is a lot higher compared to tin. link to article from osp manufacturer (see page 5) http://www
Electronics Forum | Tue Sep 26 08:41:27 EDT 2000 | greg
I am processing PCB's that have an n-tech osp coating and am finding huge inconsistencies in wetting. Some boards process clean with good wetting and the next has terrible wetting. The boards are stored and handled properly. Has anyone had this
Electronics Forum | Tue Sep 26 20:19:51 EDT 2000 | Dave F
Never heard of N-Tech. Whose material do they use? Two common materials are: Imidazole (Via Systems) and Entek (Enthone) OSP is a lacquer that fabs apply to boards by either spraying or dipping. What thickness control does your fab use? For inst