I have this PCB board that I need to solder a capacitor to it. This is the board: Solder point on PCB board, half striped half clear circle

And I'm not sure where should I solder the negative and where the positive. Can someone please explain what this circle represents on the board?

  • \$\begingroup\$ I vote for negative to the left (one with lines) \$\endgroup\$
    – user76844
    Feb 12, 2017 at 14:37
  • 2
    \$\begingroup\$ Have you missed the plus sign (+) on the right side (overlayed with the line)? And without it, the filled area usually means minus/negative (-). \$\endgroup\$ Feb 12, 2017 at 14:41
  • \$\begingroup\$ Thanks, I think I got it out by tracing he connections, it looks like the negative is indeed the one with the lines. \$\endgroup\$
    – NoamC
    Feb 12, 2017 at 14:52
  • \$\begingroup\$ Another option is to look for another capacitor in the board that is still mounted, if it exists. \$\endgroup\$ Feb 13, 2017 at 11:53

1 Answer 1


Usual Silkscreen identify the shaded side is -ve (GND), also there will be + indication on the other side, looking into your picture it seems the + is merged with the white line

  • \$\begingroup\$ Bipolar capacitors are quite cheap these days. Use one. \$\endgroup\$
    – skvery
    Feb 12, 2017 at 19:05

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