UV LED PC Board Exposure Build
Using 1watt STAR UV LEDs To Photo Expose a PCB
|When you remove the presensitized board from the light-protective bag, the board with the sensitized side will have a light plastic protective covering on it. Remember that the board is light sensitive. So you should use caution when preparing the material to limit the exposure to ambient light.|
Exposing the left-most area of the board for 15 seconds.
Now slide the card to expose the second area for 15 seconds.
Now slide the card to expose the third area for 15 seconds.
After another 15 seconds, expose the last section of the board. In total, the leftmost area of the board has now been exposed for 60 seconds.
The board has now been exposed. The leftmost area of the board was exposed for 60 seconds, while second from the left for 45 seconds, second to the right area for 40 seconds and finally the rightmost area for 15 seconds.|
You can now remove the artwork from on top of the board. There is nothing visible on the surface yet. The board must now be developed where the areas exposed to the UV light will be developed and removed. Unexposed areas will turn black.
Introduction – Design – Create Positive Image – Prepare The Board
Expose The Board – Develop Board – Etching – Thoughts