相同封裝的貼片電容從外觀上是無(wú)法區(qū)分其電容值的，相同封裝的100nF和1nF的電容，從外觀上很難區(qū)分，雖然在厚度上可能不同。那么相同貼片大小的電容可以替換嗎？這個(gè)要根據(jù)具體情況來(lái)判斷。

　　The capacitance values of chip capacitors in the same package can not be distinguished from the appearance, while the capacitance of 100nF and 1NF of the same package is difficult to distinguish from the appearance, although the thickness may be different. Can capacitors of the same chip size be replaced?This should be judged according to the specific situation.

　　1.如果是芯片電源端的芯片或許可以替換

　　If it's a chip, the chip on the power side may be replaced

　　在設(shè)計(jì)電路時(shí)，在芯片的電源引腳上，我們都會(huì)設(shè)計(jì)一個(gè)100nF的瓷片電容用以對(duì)電源進(jìn)行濾波。如果是這個(gè)電容掉了，那么替換的可能性比較大，即使這個(gè)電容掉了不焊接，那么問(wèn)題也可能不大。

　　When designing the circuit, we will design a 100nF ceramic capacitor on the power pin of the chip to filter the power supply. If the capacitor is dropped, the possibility of replacement is relatively large. Even if the capacitor is not welded, the problem may not be big.

　　2.如果是芯片的外圍電容則不能替換

　　If it is the peripheral capacitance of the chip, it cannot be replaced

　　有些芯片在設(shè)計(jì)電路時(shí)，需要根據(jù)手冊(cè)上的描述在某個(gè)引腳上設(shè)計(jì)特定容值的電容，這類電容對(duì)芯片的正常工作起著重要的作用，此類電容就不能被任意替換。

　　Some capacitors of this kind can not be used in the design of a certain kind of chip according to the capacitance of a certain chip.

　　如果在設(shè)計(jì)傳感器時(shí)，有一個(gè)芯片的某個(gè)引腳需要特定容值的電容，如果電容的位置放錯(cuò)了，導(dǎo)致電容用錯(cuò)了。在產(chǎn)品測(cè)試時(shí)，產(chǎn)品的功能沒(méi)有任何問(wèn)題，但是在測(cè)試其響應(yīng)時(shí)間時(shí)出現(xiàn)問(wèn)題，無(wú)法滿足要求。所以，這類電容不能替換。

　　If a certain pin of a chip needs a capacitor with a specific capacitance value when designing a sensor, if the position of the capacitor is wrong, the capacitor will be misused. In the product test, there is no problem with the function of the product, but there is a problem when testing its response time, which can not meet the requirements. Therefore, such capacitors cannot be replaced.