PCB lecture hall: common problems of resin plug hole -
2021-10-30u2002·u20022 PCB inner layer HDI buried hole, blind hole plug hole resin plug hole. 2.1 Common problems. A, burst board. B. Blind hole resin protrusions. C, hole without copper. 2.2 Consequences. Needless to say, the above several problems directly lead to the scrap of the product. The protrusions of the resin often cause uneven lines and lead to open and ...
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