Value Codes:
The capacitance value is often marked using a 3 digit code. This works in the same way as resistor coding but using numbers instead of colours. The first 2 numbers give the value and the last number is the multiplier. These give the value in Picofarads (pF), e.g. code 103 = 1 0 000pF (=0.01uF - see Capacitance Conversion Table). Alternatively the value may be marked directly, for example 2n2 is 2.2 Nanofarads (nF).
Tolerance Code:
A single letter is often used to indicate the tolerance of the component. These can be translated using the following table:
| Tolerance Code | Tolerance |
|---|---|
| C | +/- 0.25pF |
| D | +/- 0.5pF |
| F | +/- 1% |
| G | +/- 2% |
| J | +/- 5% |
| K | +/- 10% |
| M | +/- 20% |
| Z | - 20% +80% |
Material Code:
The dielectric material is often marked in abbreviated form. The table below shows the meaning of these abbreviations.
| Marking | Material |
|---|---|
| MKT | Metallised Polyester (PETP) |
| MKC | Metallised Polycarbonate |
| KT | Polyester Film / Foil |
| KS | Polystyrene Film / Foil |
| KP | Polypropylene Film / Foil |
| MKP | Metallised Polypropylene |
