The same value, written every way
| 3-digit code | 100 |
|---|---|
| IEC code | 10p |
| Picofarads | 10 pF |
| Nanofarads | 0.01 nF |
| Microfarads | 0.00001 µF |
| Standard series | E6 value |
With a letter or a voltage code
The letter after the code is the tolerance, and a digit-letter pair in front of it is the rated voltage on film capacitors and some ceramics:
| Marking | Meaning |
|---|---|
| 100J | 10 pF, ± 5 % |
| 100K | 10 pF, ± 10 % |
| 100M | 10 pF, ± 20 % |
| 100Z | 10 pF, +80 / −20 % |
| 2A100J | 10 pF, ± 5 %, rated 100 V |
| 1H100K | 10 pF, ± 10 %, rated 50 V |
Where you meet it
Picofarad values are used in RF circuits, oscillators and small filters, mostly as C0G (NP0) ceramics that keep their value with temperature.
Open the capacitor code calculator →Have a letter, a voltage code or a different value? The calculator reads any marking and gives the code for any value.
Frequently asked questions
What is a 100 capacitor?
Read as a code, 100 is 10 pF: 10 followed by no zeros, in picofarads. Some makers of small ceramic discs print the value written out instead, and then 100 means 100 pF.
What is 100 in µF and nF?
100 = 10 pF = 0.01 nF = 0.00001 µF.
What do 100J, 100K and 100M mean?
The same capacitance, 10 pF, with a tolerance of ± 5 % (J), ± 10 % (K) or ± 20 % (M).
Other common codes
101 102 103 104 105 106 107 220 330 470 680
Code system: EIA three-digit capacitance code and IEC 60062 tolerance letters.