Shenzhen Jinmao Yuan Technology co.,ltd

YTF Capacitor & Resistor Brand Supplier

serach
Is the monolithic capacitor polar? - Case

Is the monolithic capacitor polar?

723 Published by at October 14,2019

Capacitance can be divided into large quantities according to the presence or absence of polarity. The so-called polarity means that there are positive and negative poles. Non-polar nature is the capacitance without the difference between the positive and negative poles. Due to the importance of the positive and negative poles, it is necessary to know how to recognize the positive and negative poles of different capacitors, otherwise it will cause reverse connection and even cause an explosion. So is the monolithic capacitor polar?

Everyone knows that only the positive electrode of the electrolytic capacitor is connected to the power supply (the black test pen when the power is blocked), and the negative terminal power supply is negative (the red test pen when the power is blocked), the leakage current of the electrolytic capacitor is small (the leakage resistance is large). On the contrary, the leakage current of the electrolytic capacitor increases (the leakage resistance decreases). When measuring, first assume that a very "+" pole is connected to the black test lead of the multimeter, and the other electrode is connected with the red test lead of the multimeter, and the scale of the lower needle is stopped (the needle has a large left resistance value), and then The capacitor is discharged (the two leads are touched), the two test leads are reversed, and the measurement is repeated. In the two measurements, the last position of the hand is left (the resistance is large), and the black pen is connected to the positive electrode of the electrolytic capacitor. It is best to use R*100 or R*1K for measurement.

In addition, the positive and negative poles of the in-line polarity capacitor are in the normal case that the long leg is the positive pole and the short leg is the negative pole, but it is also possible that others have shortened the long length, so in order to judge accurately, the following can be used. Methods. Generally speaking, there are usually two rectangular frames in the gray part, so the nearest pin of the gray part is the negative pole. This is the most accurate judgment and will not go wrong. It is recommended to use this method!
Monolithic capacitors are widely used in electronic precision instruments because of their large capacitance, small size, small leakage current, stable capacity, reliable performance, good temperature characteristics and good frequency characteristics. Monolithic capacitors have no positive and negative poles. That is, no polarity.

Monolithic capacitors are larger than typical ceramic capacitors (10pF~10μF). Monolithic capacitors not only replace mica capacitors and paper capacitors, but also replace some tantalum capacitors. They are widely used in small and ultra-small electronic devices (such as LCD watches). And micro instruments).

Is the monolithic capacitor polar? This kind of capacitor is not polar. The above is the positive and negative polarity identification method with polar capacitance. It is possible to identify and judge according to these. In order to avoid the reverse connection between the positive and negative electrodes, the explosion will occur.

Aluminum electrolytic capacitors hit the first round of price increases in 2018 related stocks

Do you like ?725

Read more

Aluminum electrolytic capacitors at home and abroad prices continue to rise

Do you like ?696

Read more
©2017 RIGHT technology CO. LTD,all rights reserved