Forum - EasyEDA - An Easier Electronic Circuit Design Experience

Latest Topics Latest Replies EasyEDA Std EasyEDA Pro JLCPCB LCSC OSHWLAB General Discuss

Schematic PCB Simulation Skill Extension Feature Requests Bug Reports

Copper area issue for UFQFPN-20

1769 5

thepigs 7 years ago

**BUG** Concise problem statement: Copper area gets too close to pad for UFQFPN-20 I have created a bugreport project here: https://easyeda.com/thepigs/bugreport-5799cb0abe304425a5d199b3fd34eeaa Steps to reproduce bug: 1. Place an STM8S003F3U6 with footprint UFQFPN-20 into a schematic with 5V and GND 2. Generate PCB 3. Add +5V copper area to top Results: ![blue circle shows copper area 'tail' too close to pad][1] Expected results: copper area should stay away from pad Browser: Chrome [1]: /editor/20171128/5a1c7dd6c6173.png

Comments

andyfierman 7 years ago

There is something strange about this footprint. **SHIFT+F** searching for the UFQFPN-20 footprint in the library looks like this: ![enter image description here][1] However, the footprint imported into a PCB from placing a STM8S003F3U6 in a schematic (as described above) looks like this: ![enter image description here][2] * I do not know what the purple and grey areas are on pads 1, 5, 6, 10, 11, 15, 16 and 20. [1]: /editor/20171128/5a1c9d142b713.png [2]: /editor/20171128/5a1c9dda0e256.png

thepigs 7 years ago

Now if you open the shared project link from above the grey/purple areas have disappeared. Nothing was changed however. It is odd. Maybe one of the devs can explain it. Could be a footprint issue I guess.

thepigs 7 years ago

I worked out what the dark purple/grey items are: ![enter image description here][1] [1]: /editor/20171128/5a1ca883eac03.png Still probably a bug though??

Tutorials 7 years ago

Hi That is not a bug, when you clear PAD6 net and re-copper you can find ![enter image description here][1] If you ungroup the footprint, move the pad5 solid area to another area, and re-copper, you will see: ![enter image description here][2] What you see seems a bug that's because the solid area clearance cover the copper of PAD5, as the yellow circle marked. ![enter image description here][3] [1]: /editor/20171128/5a1d011d15a31.png [2]: /editor/20171128/5a1d019fc4268.png [3]: /editor/20171128/5a1d023bcb784.png

thepigs 7 years ago

Haha yes, obvious when you put it like that :) Thanks. I changed the UFQFPN-20 footprint to use polygonal pads instead of solid regions. And tweaked the clearance. Looks good now : ![enter image description here][1] [1]: /editor/20171128/5a1d3971b8e4c.png

你现在访问的是EasyEDA海外版，建议访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程，下载后在https://lceda.cn/editor 打开保存即可。
有问题联系QQ 3001956291 不再提醒

Cookie Notice

Our website uses essential cookies to help us ensure that it is working as expected, and uses optional analytics cookies to offer you a better browsing experience. To find out more, read our Cookie Notice

Unleash creativity, start design now.

Cookie Notice