The same value, written every way
| 3-digit code | 225 |
|---|---|
| IEC code | 2µ2 |
| Picofarads | 2,200,000 pF |
| Nanofarads | 2,200 nF |
| Microfarads | 2.2 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 |
|---|---|
| 225J | 2.2 µF, ± 5 % |
| 225K | 2.2 µF, ± 10 % |
| 225M | 2.2 µF, ± 20 % |
| 225Z | 2.2 µF, +80 / −20 % |
| 2A225J | 2.2 µF, ± 5 %, rated 100 V |
| 1H225K | 2.2 µF, ± 10 %, rated 50 V |
Where you meet it
Microfarad values are used for decoupling and filtering supply rails. Ceramic chips of this size usually carry no marking; marked ones are mostly tantalum (band = positive) or film.
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 225 capacitor?
A capacitor marked 225 is 2.2 µF: 22 followed by 5 zeros in picofarads, 2,200,000 pF, which is also 2,200 nF.
What is 225 in µF and nF?
225 = 2,200,000 pF = 2,200 nF = 2.2 µF.
What do 225J, 225K and 225M mean?
The same capacitance, 2.2 µF, with a tolerance of ± 5 % (J), ± 10 % (K) or ± 20 % (M).
Other common codes
105 220 221 222 223 224 226 475
Code system: EIA three-digit capacitance code and IEC 60062 tolerance letters.