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I found this component between my supply of resistors, motors, Arduino etc: (ruler for scale) Image of the component

It is a small black cuboid (.4cm x .4cm x .2cm) with 2 pins (1.7cm) connected to it. On the front face is written in white:

2C1
100V
83 26

On the top:

470pK

Does somebody know what component this is and what the numbers written on it mean?

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    \$\begingroup\$ 100 V 470pF capacitor. \$\endgroup\$ – winny Jul 13 '16 at 7:47
  • \$\begingroup\$ @winny So can it handle a voltage of 100V? Seems a lot to me for such a small component? \$\endgroup\$ – Todd Sewell Jul 13 '16 at 7:56
  • \$\begingroup\$ Yes it can. Try it! \$\endgroup\$ – winny Jul 13 '16 at 8:01
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    \$\begingroup\$ tolerance 10%, for completeness. \$\endgroup\$ – Antonio Jul 13 '16 at 8:03
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This is probably a 47 pF 100 V capacitor.

Capacitance values on small parts like this are almost always expressed in a floating point format. In this case, most likely, the first two digits are the mantissa and the last the exponent of 10. "470" therefore means "47 x 100". We guess that the units is pF, but that is almost universally the case.

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  • \$\begingroup\$ What does the pK mean? \$\endgroup\$ – Todd Sewell Jul 13 '16 at 17:26
  • \$\begingroup\$ @Todd: Not sure without a datasheet. "p" might indicate picofarads, and "K" could be a temperature range. Just guessing though. \$\endgroup\$ – Olin Lathrop Jul 13 '16 at 18:44

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