Anyone know what these electronics components are? They're in an Arduino kit, but they don't look familiar and we can't match them with anything on the list. The kid & I both think they're some sort of capacitor, but we can't decipher the markings.

You can test the resistance (with a low voltage, or preferably a multimeter) and if it is very high resistance, then it is most likely capacitor.

Actually I think it is "u1J63" meaning u1 would denote .1uF, The J would be +/- 5% and the 63 is 63 volts for the rating.

@KelsonV that first symbol looks like mu, so maybe capacitors?

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