Labeling method for polyester capacitor parameters

Today, some customers asked me how the parameters of our polyester capacitors were read. The editors were puzzled. The product parameters were clearly marked. After understanding, they found that the customers originally looked at other products. In fact, polyester capacitors have a variety of marking methods, let's talk about it.

Polyester capacitor refers to the metal foil film as a prime, rolled into a cylindrical or flat cylindrical core, the medium is polyester, polyester film capacitor, high dielectric constant, small volume, large capacity, good stability, suitable for side by side Road capacitance, generally have the following methods of labeling:

1)  Text symbol method. The main parameters of the capacitor are generally labeled by a number or a mixture of letters and numbers.

2)  Digital notation. The capacity of the capacitor is generally represented by a 3-digit number. The first two digits are the rms digits, and the third digit is the multiplier, which is how many zeros after the rms value, which is how much. Maybe you don't understand. Here is an example: For example, 474 means that the effective value is 47, and then add 4 0s, that is, 470000Pf=0.47μf.

3) Straight standard method: directly mark the main parameters of the capacitor (such as: (capacity, rated voltage, maximum withstand voltage, deviation range, etc.) on the capacitor. For example, 0.47μf/310V, 0.47μf is the capacity, equivalent to 470000Pf, 310V It is pressure-resistant. Some will also be marked with "J", "K", "M", etc., which are deviation ranges. The deviation ranges corresponding to J, K, and M are 5%, 10%, and 20%, respectively.