Negative Photoresist Film 150mm X 200mm (Printed Circuits) - (AD2095)

You can create incredibly thin and detailed circuit boards using this high-quality photoresist film. It's the same material that professional PCB shops use.

 

 

A sheet of negative photoresist film (area exposed to UV light will remain on the copper plate). Each sheet measures 15x20 cm.

 

 

1. Prepare: Clean your copper plate. Cut the photoresist film slightly larger than your PCB.

 

2. Apply photoresist film: This film has 3 layers, the top and bottom layers are clear protective layers. First, you need to remove one protective layer; the easiest way is to use two small pieces of adhesive tape. Then, apply the middle layer to the copper sheet.

  A. Apply using a hot roller laminator. This is the easiest and most professional way to do it.

  B. Apply using your hand. Starting from one corner and finishing at the opposite corner, use your palm to remove all air bubbles between the sheet and the film. Set the iron temperature to about 130°C, apply the hot iron down over the film and PCB, pressing both.

3. Exposure: Place your artwork in negative over the protective layer (photoresist film). Use a pair of glass sheets to press the copper plate with your design, then expose it to UV rays or sunlight. The light source should be at least 8" away from the design. The best exposure time depends on different aspects, but you can easily recognize it: the film color changes from light blue to dark blue.

4. Develop: Remember, you need to develop a negative film. Remove the remaining protective layer from the film, now simply submerge the plate in developing solution; use 1g of developer powder with 100g (100ml) of water (~1% by weight). After 3 minutes, check if the developer and plate are still holding; you can always put it back in the developer if it needs more time.