The same value, written every way
| 3-digit code | 680 |
|---|---|
| IEC code | 68p |
| Picofarads | 68 pF |
| Nanofarads | 0.068 nF |
| Microfarads | 0.000068 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 |
|---|---|
| 680J | 68 pF, ± 5 % |
| 680K | 68 pF, ± 10 % |
| 680M | 68 pF, ± 20 % |
| 680Z | 68 pF, +80 / −20 % |
| 2A680J | 68 pF, ± 5 %, rated 100 V |
| 1H680K | 68 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 680 capacitor?
Read as a code, 680 is 68 pF: 68 followed by no zeros, in picofarads. Some makers of small ceramic discs print the value written out instead, and then 680 means 680 pF.
What is 680 in µF and nF?
680 = 68 pF = 0.068 nF = 0.000068 µF.
What do 680J, 680K and 680M mean?
The same capacitance, 68 pF, with a tolerance of ± 5 % (J), ± 10 % (K) or ± 20 % (M).
Other common codes
100 220 330 470 681 682 683 684
Code system: EIA three-digit capacitance code and IEC 60062 tolerance letters.