The same value, written every way
| 3-digit code | 104 |
|---|---|
| IEC code | 100n |
| Picofarads | 100,000 pF |
| Nanofarads | 100 nF |
| Microfarads | 0.1 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 |
|---|---|
| 104J | 100 nF, ± 5 % |
| 104K | 100 nF, ± 10 % |
| 104M | 100 nF, ± 20 % |
| 104Z | 100 nF, +80 / −20 % |
| 2A104J | 100 nF, ± 5 %, rated 100 V |
| 1H104K | 100 nF, ± 10 %, rated 50 V |
Where you meet it
This is the classic decoupling capacitor: one next to each supply pin of a chip, between the pin and ground.
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 104 capacitor?
A capacitor marked 104 is 100 nF: 10 followed by 4 zeros in picofarads, 100,000 pF, which is also 0.1 µF.
What is 104 in µF and nF?
104 = 100,000 pF = 100 nF = 0.1 µF.
What do 104J, 104K and 104M mean?
The same capacitance, 100 nF, with a tolerance of ± 5 % (J), ± 10 % (K) or ± 20 % (M).
Other common codes
100 101 102 103 105 106 107 154 224 334 474 684
Code system: EIA three-digit capacitance code and IEC 60062 tolerance letters.