Comparison of Dry Film and Wet Film for PCB Processing

Comparison of Dry Film and Wet Film for PCB Processing

Dry film is easy to operate, especially using an automatic film laminating machine, which can be mass-produced.

Wet film is cheap, but it cannot be used on automatic lines. Wet film is theoretically good for thin lines, but wet film also has many other problems.

In general, dry film is better than wet film, convenient and stable. The downside is that it’s just expensive. If it is an engineer, I choose dry film, which is less troublesome and easy to control.

Dry film is not necessarily better than wet film, they each have their own advantages and disadvantages. The price of dry film is more expensive, but it can flood holes and has high precision (it is not easy to cause clipping). The price of wet film is much cheaper than that of wet film, which is equivalent to 1/7. When it cannot flood the hole, the oil film is not easy to control and needs to be taken care of.

In theory, the precision of wet film is higher than that of dry film, but it is easier to clip when it is thinner. Membrane estimation is difficult to achieve high-precision board and requires secondary drilling. However, in general, wet film is still more cost-effective than dry film.