What is PCB board green oil? How is it different from blue oil?_Shenzhen StarLight Industrial Development Co., Ltd.

What is PCB board green oil? How is it different from blue oil?

source:News release time:2022-09-16 Hits: Popular:PCB Assembly company: Share:

Green oil refers to the ink coated on the copper foil on the PCB. This layer of ink can cover unexpected conductors such as pads, and can avoid welding short circuits and prolong the service life of the PCB during use; generally called solder mask or solder mask;

Double Sided PCB

Colors are green, black, red, blue, yellow, white, matt color, etc. Most PCBs use green solder mask ink, which is commonly called green oil.

Features and differences between green oil and blue oil for PCB boards:

1. Price: At present, the price of domestic blue oil per square meter of PCB is about 20 yuan more expensive than green oil, and imported blue oil (Nissan) is about 100 yuan more expensive than green oil. According to our current DVD player, domestic oil is about 100 yuan per DVD. The additional cost is 5 cents to 5 cents per unit. For P-DVD and RW-DVD, the cost is approximately 1 to 3 cents per unit.

2. Procurement of manufacturers (source of supply) There is no problem in purchasing both inks and can be switched at any time. meet environmental requirements.

3. Features:

1. The blue oil has a novel color and looks high-grade;

2. Blue oil lacks hardness and is easy to scratch, and defective products will increase when PCB manufacturers produce.

3. Blue oil has high fluidity, easy to accumulate oil, and uneven oil. During production, the PCB needs to be placed flat and not vertically, which takes up a lot of space.

4. It is difficult for blue oil to plug the hole, and it is easy to flow out after plugging the hole.

5. The blue oil baking board takes a long time, it is easy to get dirty, and it is easy to stick to the film print after packaging.

6. It is easy to change color after SMT, and has a great influence on the flux

7. There will be color difference in mass production (the color of different batches varies greatly)

8. The above is a comparison of domestic blue oil and green oil. Nissan blue oil will be much better, but the price will increase more.

9. The material of the single panel is poor, and the problem is more obvious. If the single panel is not switched, it will cause one machine to use both blue and green.

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