Printed circuit board (PCB) high current test method
A test method and high-current technology, applied in the direction of electronic circuit testing, automated test systems, measuring electricity, etc., can solve the problems of destructive verification, inner-layer circuit connection problems, and high levels, to avoid scrap loss, adjustment and improvement, short time effect
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[0036] Example 1
[0037] A PCB high current test method, specifically including the following steps:
[0038] S1. Front resistance measurement: Use a four-wire micro-resistance meter to measure the resistance of both ends of the HCT Coupon test loop, (HCT Coupon wiring indication figure 1 (Shown), this link can detect PCB plating incompleteness problems. If the measured resistance value has a large deviation from the theoretical resistance value, the problem is mainly caused by the following possible factors such as: electroplating laser blind hole / through hole Hole breakage, laser blind hole missed / impermeable / small hole diameter, mechanical drilling missed drilling or drilling offset, compression combination group staggered type, etc.;
[0039] S2. If the front resistance test is passed, it will enter the high current test link (this link is to simulate high temperature production processes such as PCB overheated air reflow furnace or wave soldering, and the normal temperature in ...
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