Film capacitance reading

The film capacitor is a capacitor in which a metal foil is used as an electrode and a plastic film such as polyethylene, polypropylene, polystyrene or polycarbonate is stacked from both ends and wound into a cylindrical shape. According to the type of plastic film, it is called polyethyl capacitor (also known as Mylar capacitor), polypropylene capacitor (also known as PP capacitor), polystyrene capacitor (also known as PS capacitor) and polycarbonate capacitor.

For example, the 684 on the film capacitor uses the digital counting method. This counting method is generally a 3-digit number. One digit on the left and one digit in the middle are numbers, and one digit on the right is a multiple, which is 10 Second, if no unit is indicated, the default is pF. If it is a number with a decimal point and no unit is indicated, the unit is uF.

The film capacitance reading is similar to the reading of the color ring resistance. The first two digits of the three digits are coefficients, and the latter one is an index of 10. 104 is 10 times 10 to the 4th power, equal to 100000pF, which is 100nF. I hope this article can help everyone! If you have technical questions, please contact us and try to solve the problem for you.