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判斷貼片電容好壞的兩個方式
作者:電解電容廠家 來源:http://www.dorgoomali.com 日期:2020-10-15 10:46 瀏覽

  判斷貼片電容好壞是采購電容的必備技能,電解電容廠家總結出兩種不同的判斷方法,一是觀察外觀、尺寸及顏色,二是用數字電橋來檢測。

  Judging the quality of chip capacitors is a necessary skill for purchasing capacitors. Electrolytic capacitor manufacturers have summed up two different judgment methods, one is to observe the appearance, size and color, and the other is to use digital bridge to detect.

  第一:觀察

  First: observation

  如果是一個質量合格的貼片電容的話,那么外觀尺寸應該是和外面標注的尺寸或者說明書上面以及外包裝上面標注的尺寸是一致的,但如果你手頭拿到一個貼片電容,我發現這個外觀尺寸好像有些改變,比如說有輕微的瑕疵或者輕微的裂痕,那這個外觀的尺寸就可能會有一些問題了,那間接的有可能說明這個電容出現一些問題。

  If it is a chip capacitor with qualified quality, the appearance size should be consistent with the size marked on the outside or the size on the instruction manual and on the outer package. However, if you have a chip capacitor in hand, I find that the appearance size seems to have some changes, such as slight defects or slight cracks, then the appearance size is OK There will be some problems, which may indirectly indicate that there are some problems with this capacitor.

貼片電容

  其次看錫腳,錫腳如有黑點、缺陷、裂紋、錫腳包邊上下比例不協調等不良說明所以這樣的好壞通過肉眼去看就可以大致的判斷出來。

  Secondly, look at the tin feet. If there are black spots, defects, cracks, and uncoordinated proportion of the top and bottom of the tin feet, the quality can be roughly judged by naked eyes.

  還可以看顏色,如果是正常出廠的正常的電容的話,那么外觀顏色是均勻的,同一批次不會出現發黑和發灰等色差現象,但如果當你拿到一款貼片電容的時候,肉眼觀察發現這個外面的顏色就已經發黑了,甚至像煙熏的那種顏色,那可能就說明這個電容出現了一些問題了,而且這種電容在安裝的時候是不能夠安裝上去的,應該進行檢測,如果檢測不合格,那就說明電容有問題。

  You can also see the color. If it is a normal factory capacitor, then the appearance color is uniform, and there will be no color difference such as blackening and graying in the same batch. But if you get a chip capacitor, the naked eye observation finds that the color on the outside has been blackened, even like the color of smoke, it may indicate that the capacitor has some color The problem is, and this kind of capacitor can not be installed in the installation, should be tested, if the test is not qualified, it means that there is a problem with the capacitor.

  第二:用數字電橋來進行檢測

  Second: use digital bridge to test

  檢測的過程很簡單,就是直接把電橋調到相應的檔位,然后用電橋夾具,將電容的兩個錫腳全部都接通短路。然后這個時候來觀察讀數,穩定之后的讀數,如果和這個電容的說明書上面的讀數的電容值是保持一致的,或者是偏差非常的小在正常誤差范圍內,那說明這個電容應該是沒有問題的。

  The detection process is very simple, that is, directly adjust the bridge to the corresponding gear, and then use the bridge clamp to connect the two tin pins of the capacitor to short circuit. Then observe the reading at this time. After the reading is stable, if the capacitance value is consistent with the reading in the instruction manual of the capacitor, or the deviation is very small within the normal error range, it means that the capacitance should have no problem.

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