If the capacitor bears a second value, it will typically be its breakdown voltage, expressed as a number followed by V, such as “25V” or “100V.”įinally, in the case of a capacitor with polarized leads, you’ll typically see a colored stripe on the negative side. You’ll need to know the difference between 134μF written directly or at 130,000μF written in an exponential coding.Īfter capacitance, the next most important spec is the breakdown voltage. It’s important to know the general range of capacitance to understand how to read the numbers. You may see a number between 1 and 999 written directly on them. Note that tiny capacitors – under 1000μF – will indicate the capacitance directly in picofarads. The numbers eight and nine refer not to an exponential power of eight and nine, but to a multiplier of. In this marking formula, it is important to note that the final digit may indicate a few different things:
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