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It's essential to be able to read '''capacitor codes''' in order to correctly recognise the correct part and as the schematic, BOM and component supplier might use pF, nF or µF interchangeably to be able to
== EIA scheme ==
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On larger capacitors their value is printed on the case or encapsulation. The values of small capacitors are indicated in an alphanumeric code. With older capacitor values were sometimes indicated by a colour code.<ref name="ccam">[https://www.electronics-notes.com/articles/electronic_components/capacitors/capacitor-codes-markings.php Capacitor Codes & Markings], Electronics Notes</ref>
With small general purpose capacitors where values range from a few pF to less than 1 µF the convention arose that whole numbers designate values in picofarads while decimal fractions designates values in microfarads.<ref name="rcv">[https://web.archive.org/web/20120814104332/http://www.play-hookey.com
Often p, n and u are substituted for the decimal point. For example 8p2 for 8.2pF, n51 for 0.51nF or 4u7 for 4.7µF.
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=== Stripe ===
If there is a stripe on a non-polarised capacitor, it might indicate which lead is connected to the outermost foil. To connect the capacitor connect this lead to the lowest impedance (usually the ground) side of the circuit. Many modern capacitors are unmarked, and often when a capacitor does have a stripe, it’s not related to the outside foil marking.<ref>[https://www.nutsvolts.com/magazine/article/finding-the-outside-foil-lead Finding the outside foil lead] by Chris Prioli, Nuts and Volts, Issue 2, 2022, p. 12</ref><ref>[https://e2e.ti.com/blogs_/archives/b/thesignal/posts/pcb-layout-tricks-striped-capacitors-and-more PCB Layout Tricks—striped capacitors and more] by Bruce Trump, The Signal, 11 Dec 2012</ref>
=== Small values ===
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