判斷貼片電容好壞是采購(gòu)電容的必備技能，電解電容廠家總結(jié)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(shù)字電橋來(lái)檢測(cè)。

　　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(gè)質(zhì)量合格的貼片電容的話，那么外觀尺寸應(yīng)該是和外面標(biāo)注的尺寸或者說(shuō)明書上面以及外包裝上面標(biāo)注的尺寸是一致的，但如果你手頭拿到一個(gè)貼片電容，我發(fā)現(xiàn)這個(gè)外觀尺寸好像有些改變，比如說(shuō)有輕微的瑕疵或者輕微的裂痕，那這個(gè)外觀的尺寸就可能會(huì)有一些問(wèn)題了，那間接的有可能說(shuō)明這個(gè)電容出現(xiàn)一些問(wèn)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.

　　其次看錫腳，錫腳如有黑點(diǎn)、缺陷、裂紋、錫腳包邊上下比例不協(xié)調(diào)等不良說(shuō)明所以這樣的好壞通過(guò)肉眼去看就可以大致的判斷出來(lái)。

　　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(huì)出現(xiàn)發(fā)黑和發(fā)灰等色差現(xiàn)象，但如果當(dāng)你拿到一款貼片電容的時(shí)候，肉眼觀察發(fā)現(xiàn)這個(gè)外面的顏色就已經(jīng)發(fā)黑了，甚至像煙熏的那種顏色，那可能就說(shuō)明這個(gè)電容出現(xiàn)了一些問(wèn)題了，而且這種電容在安裝的時(shí)候是不能夠安裝上去的，應(yīng)該進(jìn)行檢測(cè)，如果檢測(cè)不合格，那就說(shuō)明電容有問(wèn)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(shù)字電橋來(lái)進(jìn)行檢測(cè)

　　Second: use digital bridge to test

　　檢測(cè)的過(guò)程很簡(jiǎn)單，就是直接把電橋調(diào)到相應(yīng)的檔位，然后用電橋夾具，將電容的兩個(gè)錫腳全部都接通短路。然后這個(gè)時(shí)候來(lái)觀察讀數(shù)，穩(wěn)定之后的讀數(shù)，如果和這個(gè)電容的說(shuō)明書上面的讀數(shù)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(nèi)，那說(shuō)明這個(gè)電容應(yīng)該是沒(méi)有問(wèn)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.