I have 2 feed through capacitor NFM21PC475B1A3 & NFM21PC105B1C3. These haven't the same capacitance. I want to separate them but I can't measure. Help me what should I do?

  • \$\begingroup\$ Search for the part numbers, it will tell you the values. \$\endgroup\$
    – awjlogan
    Aug 15, 2018 at 8:35
  • \$\begingroup\$ @awjlogan oh! Some of them have been mixed accidentally. Their shapes are same. So I can't separate. \$\endgroup\$
    – parisa-far
    Aug 15, 2018 at 9:20
  • \$\begingroup\$ Is there nothing printed on the components? \$\endgroup\$
    – awjlogan
    Aug 15, 2018 at 10:11
  • \$\begingroup\$ @awjlogan Nope! It looks like a ceramic capacitor but it has 4 lead. \$\endgroup\$
    – parisa-far
    Aug 15, 2018 at 10:19
  • \$\begingroup\$ Got it! Didn't mean to be glib, by the way :) \$\endgroup\$
    – awjlogan
    Aug 15, 2018 at 10:22

1 Answer 1


Buy some cheap $5 multimeter which can measure capacitance.
One capacitor is 4.7uF and the second 1uF. So even the cheapest multimeter with capacitance measurement capability will help to distinguish them.

  • \$\begingroup\$ I have a multimeter. But it's not the same as capacitor. when I measure the two larger leads multimeter shows 0. \$\endgroup\$
    – parisa-far
    Aug 15, 2018 at 7:30
  • \$\begingroup\$ @parisa-far make sure it has capacitance measurement on it, and make sure the leads are in the right place \$\endgroup\$
    – MCG
    Aug 15, 2018 at 7:45
  • \$\begingroup\$ @parisa-far those larger pads are shorted together, look at the datasheet. Measure capacitance between one of the outter pads an pad in the middle. \$\endgroup\$ Aug 15, 2018 at 11:08

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