电容的种类及型号实在是太多了，导致很多人在使用的过程中不能准确的判断出电容是否分正负极，如何正确识别电容的正负极，今天小编就跟大家分享一下常见的电容引脚正负极识别方法。

　　There are so many types and models of capacitors that many people can't accurately judge whether the capacitor is divided into positive and negative electrodes in the process of using them. How to correctly identify the positive and negative electrodes of capacitors? Today, I'd like to share with you some common identification methods of positive and negative electrodes of capacitor pins.

　　1.普通电解电容

　　Common electrolytic capacitor

　　在电容的外壳上标有“--”的为负极，另一极为正极。负极一般颜色为灰白色，正极一端多为黑色。识别方法二：在新买的电容中既在未使用的电容中，两个管脚中长的代表电容的正极，短的代表电容的负极。

　　The one marked with "-" on the shell of the capacitor is negative, and the other is positive. The negative electrode is generally gray white, and the positive end is mostly black. Identification method 2: in the newly purchased capacitor, the long one represents the positive pole of the capacitor and the short one represents the negative pole of the capacitor. 

普通电解电容的正负极识别

　　2.贴片铝电解电容

　　Chip aluminum electrolytic capacitor

　　将两个电容放在一起说的目的就是为了区分两种电容的正负极差异，铝电解电容在外形上是个圆柱形，其正负极的识别通过电容的顶部有个黑色的标识来识别，有黑色的部分是负极，另一极是正极。另一极是负极。或者是讲：有一端是不规则的是正极，另一端是负极。

　　The purpose of putting the two capacitors together is to distinguish the difference between the positive and negative electrodes of the two kinds of capacitors. The aluminum electrolytic capacitor is cylindrical in shape, and its positive and negative electrodes are identified by a black mark on the top of the capacitor. The black part is the negative electrode, and the other is the positive pole. The other pole is the negative pole. Or to say: one end is irregular is the positive pole, the other end is the negative pole.

贴片铝电解电容正负极识别识别

　　3.贴片钽电解电容的识别方法

　　Identification method of chip tantalum electrolytic capacitor

　　钽电解电容的外形上是个长方体，带有条纹的一极是正极（切记）！这个看起来比较反常，记住就好啦。

　　Tantalum electrolytic capacitor shape is a cuboid, with a stripe of the pole is the positive pole (remember)! This looks abnormal. Just remember.

贴片钽电解电容正负极识别

　　4.微调电容和可变电容的正负极识别

　　Positive and negative pole identification of fine tuning capacitor and variable capacitor

　　识别微调电容（就是那种通过螺丝刀进行细微调节的电容），这种微调电容一般对电容的正负极要求不是非常的严格，但是为了防止调节电容的过程对电路板系统的影响通常将动片定义为负极连接电路板的地，另一极为正极。可变电容的正负极识别和微调电容相同，不过可变电容的动定引脚比较好判别。一般对于单联可变电容来说，在两端的引脚为定，一般连接正极，中间的引脚为动，连接电路的负极。

　　Identify the trimming capacitor (that is, the capacitor that is fine adjusted by a screw driver). Generally, the requirements for the positive and negative poles of the capacitor are not very strict. However, in order to prevent the influence of the process of adjusting the capacitance on the circuit board system, the moving piece is usually defined as the negative pole connected to the ground of the circuit board, and the other pole is the positive pole. The positive and negative pole identification of variable capacitor is the same as that of fine tuning capacitor, but the dynamic fixed pin of variable capacitor is better to distinguish. Generally, for single variable capacitor, the pin at both ends is fixed, and the pin in the middle is connected to the negative pole of the circuit.

微调电容和可变电容的正负极识别

　　以上就是常见的电容引脚正负极识别的方法，希望对您有所帮助！如需采购电容请随时联系我们，山东红宝电子有限公司经营各种类型的电容元器件，型号齐全，性能良好，期待与您的合作。

　　The above is the common capacitor pin positive and negative pole identification method, hope to help you! If you need to purchase capacitors, please contact us at any time. Shandong Hongbao Electronic Co., Ltd. deals in various types of capacitor components with complete models and good performance. We are looking forward to cooperating with you.