IN
Upload

Loading icon Loading...

Alert icon

This video is unavailable.

Testing Tin Pattern Plating for Protecting Vias (Fail)

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to like PatheticComputing's video.

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to dislike PatheticComputing's video.

Sign in to YouTube

Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to add PatheticComputing's video to your playlist.

Uploaded on Feb 6, 2012

In this video, I try to use the tin pattern plating method to protect the plated vias. I go through the usual steps for copper plating the vias. Unfortunately, the vias were not consistently plated. I believe this was because of excessive burring and copper bits being lodged in the vias. My method of using double sided tape to mount the board in the CNC causes the board to be raised. This is the first time I did it this way. When the board is not pushed against another surface, burrs can form. This is why the board should be laminated between two other boards to eliminate burrs. But, I don't have spare boards laying around to waste for drilling. I will have to go back to my old method of board mounting or find a new way that will work.

Again, I had problems with the tin plating not being uniform. I decided not to do a micro-etch before tin plating because I did not want to damage the already delicate vias. But, it may be a necessary process. I will have to do more testing on that.

The etching process was a disaster. It took a full 2 hours to complete. I guess I didn't recharge the etchant as much as I should have. The tin plating turned dark in some places which from my experience is a bad thing. However, I think I know what the problem is now. Tin reacts with the copper sulfate in the solution. Having the board sit in copper sulfate for 2 hours only made things worse. See my follow-up video for more testing on this.

Loading icon Loading...

Loading icon Loading...

Loading icon Loading...

The interactive transcript could not be loaded.

Loading icon Loading...

Loading icon Loading...

Ratings have been disabled for this video.
Rating is available when the video has been rented.
This feature is not available right now. Please try again later.

Loading icon Loading...

Advertisement
Loading...
Working...
Sign in to add this to Watch Later

Add to