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贴片晶闸管与插孔晶闸管管芯基本相同,仅封装不同,故插孔晶闸管的检测技巧在贴片晶闸管检测中基本适用。下面以单结贴片晶闸管为例,介绍其检测方法。贴片晶闸管检测示意图如图1所示。1.引脚判别将万用表置于R×100Ω或R×lkΩ档,分别测量被测管各电极间正、反向电阻。如测得某两电极间电阻值较大(80kΩ左右),再对调两表笔测量,如阻值较小(2kΩ左右),这时黑表笔所接电极为控制极G,红表笔所接为阴极K,剩余
Thyristor chip and thyristor jack socket is basically the same, only the package is different, so the jack thyristor detection techniques in the chip thyristor detection is basically applicable. The following single-chip thyristor chip, for example, describes its testing methods. SMD thyristor detection diagram shown in Figure 1. 1. Pin Discrimination Put the multimeter in R × 100Ω or R × lkΩ file, measure the positive and negative resistance between the electrodes under test. If the measured resistance between a large two electrodes (80kΩ or so), and then adjust the two pens measured, such as the resistance of small (2kΩ or so), then the black pen connected to the control electrode G, the red pen connected to the cathode K, remaining