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相同贴片大小的电容可以替换吗?
作者:红宝电容 来源:http://www.jnhongbao.com 日期:2020-07-25 09:18 浏览

  相同封装的贴片电容从外观上是无法区分其电容值的,相同封装的100nF和1nF的电容,从外观上很难区分,虽然在厚度上可能不同。那么相同贴片大小的电容可以替换吗?这个要根据具体情况来判断。

  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.

贴片电容.jpg

  1.如果是芯片电源端的芯片或许可以替换

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

  在设计电路时,在芯片的电源引脚上,我们都会设计一个100nF的瓷片电容用以对电源进行滤波。如果是这个电容掉了,那么替换的可能性比较大,即使这个电容掉了不焊接,那么问题也可能不大。

  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.如果是芯片的外围电容则不能替换

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

  有些芯片在设计电路时,需要根据手册上的描述在某个引脚上设计特定容值的电容,这类电容对芯片的正常工作起着重要的作用,此类电容就不能被任意替换。

  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.

  如果在设计传感器时,有一个芯片的某个引脚需要特定容值的电容,如果电容的位置放错了,导致电容用错了。在产品测试时,产品的功能没有任何问题,但是在测试其响应时间时出现问题,无法满足要求。所以,这类电容不能替换。

  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.