The cause of PCB copper leakage

Locate copper exposure-this problem is relatively rare, and the general causes are as follows:

1. Locate copper exposure-this problem is relatively rare, and the general reasons are as follows:

I. There is no oil on the screen (oil will be clogged when the screen is not clean);

II. Exposure of garbage;

III. There are blocking spots on the film (due to the problem of the film itself or the reason why the ink does not stick to the film during the exposure process);

2. Unpositioned bare copper

I. Exposed garbage (no location);

II. Scrape welding;

III. Film glue oil;

The influence of PCB copper leakage

The main problem is oxidation. Generally, there will be no consequences in a short time. It will rust and turn green for a long time and slowly rot.