How to Read Capacitor Value Codes:
- Capacitance is the ability to store electrons and is measured in Farads.
- One Farad is a very large value! So most capacitors are measured in MicroFarads (uF) or even Picofarads (pF).
What do the letters on a capacitor mean?
Letters that follow the number codes (ex: 103J or 252M) are the tolerance, or how much a capacitor may deviate from its official value. Common values are shown below:
|E||+/- 0.5%||F||+/- 1%|
|G||+/- 2%||H||+/- 3%|
|J||+/- 5%||K||+/- 10%|
|M||+/- 20%||N||+/- 30%|
|P||+100% ,-0%||Z||+80%, -20%|