105 capacitor: 1 µF (1,000 nF)
A capacitor marked 105 has a capacitance of 1 µF. The first two digits (10) are the value in picofarads and the last digit (5) is the number of zeros to add.
105 in every unit
| Picofarads | 1,000,000 pF |
|---|---|
| Nanofarads | 1,000 nF |
| Microfarads | 1 µF |
| Farads | 1.0 × 10^-6 |
How to read 105
- Take the first two digits: 10.
- Add 5 zeros: 1,000,000 pF.
- Convert: 1,000,000 pF ÷ 1,000 = 1,000 nF; ÷ 1,000,000 = 1 µF.
With tolerance and voltage letters
| Marking | Meaning |
|---|---|
105J | 1 µF, ±5% |
105K | 1 µF, ±10% |
105M | 1 µF, ±20% |
1H105K | 50 V, 1 µF, ±10% |
2A105J | 100 V, 1 µF, ±5% |
Typical uses
1 µF capacitors are used on the input and output of many low-dropout regulators, as bulk decoupling near microcontrollers and in audio coupling.
Reactance at 50 Hz–10 MHz, RC time constants and how 1 µF is marked in other notations: 1 µF capacitor reference.
Related codes
FAQ
What is the value of a 105 capacitor?
1 µF (1,000 nF): 10 × 10^5 pF = 1,000,000 pF.
What does 105J, 105K or 105M mean?
The letter is the tolerance: J = ±5%, K = ±10%, M = ±20%. The value is still 1 µF.
Can I replace a 105 capacitor with a different type?
Usually, if the capacitance, voltage rating and temperature characteristic are at least as good. Check the rated voltage, and remember ceramic capacitors lose capacitance at high DC voltage.
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