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Auto E-test Machine

Auto E-test Machine

Electrical performance test is mainly to test continuity and insulation of substrate circuit. Continuity test refers to whether continuity of the circuit is determined by measuring whether the resistance between nodes in the same network is smaller than the on-threshold There is a disconnection phenomenon, insulation test refers to measuring the resistance between different network nodes is greater than the insulation threshold to determine whether there is a short circuit insulation network phenomenon. The main factors that lead to the increase of the test difficulty include: PAD size, PAD pitch of the substrate surface, narrowing of the conductor spacing, narrowing the via diameter, limiting the indentation of the PAD surface coating layer, increasing the accuracy requirement of the measurement resistance, and testing the speed requirement Increase and other factors

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