大家好，下面小编给大家分享一下。小功率烙铁能代替大功率烙铁吗？很多人还不知道这一点。下面详细解释一下。现在让我们来看看！

小功率的烙铁代替不了大功率的。不同功率的电烙铁有不同的用途。一般20W可以用来焊接电路板；功率太大可能导致电路板铜箔脱落；在电路板上焊接大功率元件(如带散热器的功率管)和大面积铜箔(如电路板接地点)时，宜使用40W-60W的烙铁，因为20W的烙铁无法熔化大面积铜箔上的焊料；如果想在小面积的铁质、搪瓷厨具上补一个洞，需要200W~300W的大功率烙铁；如果要填大面积的搪瓷脸盆孔，需要先用电炉或煤气炉加热脸盆，再用200W~300W的大功率烙铁填孔(当然前提是去掉孔周围的瓷，然后刮掉氧化层，也要用焊锡膏)。此外，当焊接电路板时，烙铁在焊点处不应超过3秒。如果超过3秒，可能会损坏元件或电路板的铜箔脱落。

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以上说明了小功率烙铁能否替代大功率烙铁。这篇文章已经分享到这里了，希望能帮到大家。如果信息有误，请联系边肖进行更正。