How to set the via cover oil in Protel 99 SE PCB design software?

dengguoqiang

How to set the via cover oil in Protel 99 SE PCB design software? [Copy link]

How to set the via cover oil in Protel 99 SE 1. Design---Rules 2. Manufacturing---Solld mask expansion 3. Double-click the above picture to light up Solder Mask Expansion ③ area 4. Modify ④ and ⑤ accordingly Definition of the term Via cover oil, that is, the solder ring of the via is covered with ink. Via window: that is, the solder ring of the via is exposed (exposed like the component pad) and tinned. It can generally be used to debug and measure signals. The disadvantage is that it is easy to cause short circuits. The first way to handle vias is to open windows, which means that it can be easily tinned like a pad. Inspection standard: tinning. The second way is to cover with oil. Inspection standard: no tin on the via after tinning furnace and manual welding is considered qualified. This is determined by the process. The reasons why the vias do not seem to be covered with oil are as follows: because the solder mask oil is liquid and the middle of the via is empty, the solder mask oil on the solder mask ring can easily enter the via during the baking process, causing the via to turn yellow. This situation is related to the concentration of the solder mask oil, the baking oven and the intensity, so some of them may appear green, while others may appear yellow. The third type is oil plugging. According to the inspection standard, there must be oil on the opaque surface. The second process has this problem, and for vias like bga, the requirements are more stringent, so there is an oil plugging process, which is an important supplement to the second type. The oil plugging process is to first fill the entire via with oil and block the via, so that the oil on the solder mask ring will not flow into the via, and the via will not turn yellow. At present, Jiali Chuang's four- and six-layer boards accept the oil plugging process. If there is anything wrong, please point it out and reply to the exchange or QQ3001737702

arm8686

If you do not check the option in the red box, the information in the Protel 99 SE pop-up window will be fully displayed. Every time I install it on a new computer, I habitually set this place first. However, now I only use it to look at the old drawings, because I have switched to KiCad, there is no copyright problem.

qwqwqw2088

arm8686 posted on 2019-1-18 15:34 If you do not check the option in the [red box], the information in the Protel 99 SE pop-up window will be fully displayed. Every time you install it on a new computer, you habitually set it up first...

KiCad is free and I used it last year. It is quite easy to use, but there is one thing that is scary. Every time you add a change library, or update the library, you need to connect to the Internet.

btty038

You need to use some real objects to make PCB. It should be easier to understand.  

wuzuizhibin

I have learned and been taught. Thank you for sharing.