日本語
Hi all...the 2 SMT 0805 LEDs on the red layer are in parallel but opposing polarities. They have a common 2.5V but are driven by a Low or Hi digital 5V signal to select which one lights. The thru hole LED placement is a DNP item which I have as a bicolor LED option. Now the PCBA manufacturer installed both SMT LEDs in parallel , same polarity so I cannot select which one lights independently. I note the tplace layer shows 2 square dots close to the centre point with orientation info.
So I don't know which file in my gerbers to locate what went wrong. Can anyone give advise?
- Comments(1)
A****min
Mar 10.2020, 16:17:55
Include detailed notes and even drawings of details like this, and actually almost anyplace orientation matters.
The polarity of the surface mount LED is indicated by the small square dot, but it's ambiguous because of the much larger plus sign adjacent to it. Even with the proper pattern on the board, a human programs how the parts are placed in the pick&place machine.
Document everything. Include a PDF of the Gerber file with appropriate layers shown, and add any and all details to make parts placement absolutely clear.
