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:

83 26

On the top:


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

  • 1
    \$\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
  • 1
    \$\begingroup\$ tolerance 10%, for completeness. \$\endgroup\$ – Antonio Jul 13 '16 at 8:03

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.

  • \$\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

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.