Yes, C500. You can't read the value of a capacitor in circuit, as you've found. And 18pF is too low to read reliably with hobby gear anyway. The "alternative paths" are all as shown on the schematic - primarily via the RTC itselfI assume you mean C500, shown as 18pF on the schematic? If I put a meter across this on one of the other boards, I get a capacitance reading (nowhere near what it ought to be, but there are probably alternative paths going on). Whereas, on this board, I get a solid zero. The actual traces leading into it are fine.
It's an 0805 size, right?
Yes, it's an 0805 but 0603 will fit just as well. The 18pF isn't critical.
Statistics: Posted by IanJeffray — Wed Oct 16, 2024 10:04 pm