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What is the reason for the disconnection of the three pin bo

2021年10月12日 already existingHuman browsing
What is the reason for the poor inductance of three pin boost inductance?
Jiufeng after sales engineering received feedback from the customer that a 9 * 12 three pin boost I-shaped inductor did not work after inserting the board. Use a multimeter to test the sensing quantity. Sometimes there is no sensing quantity. Break the pin, and the sensing quantity can be tested intermittently. What caused it?