pcb翘曲怎么算
请教大神,根据ipc翘曲是下边这样计算的,翘曲这样计算有两个值(分母是长度的一个宽度一个),最终取值取哪个呢?还有0.75%和1.5%的标准分别指哪种板呢?smt 板和波峰焊板?
Calculate the percentage of Bow/ twist as follows:
BL=RL/L100 BW=RW/W100
Percentage Twist = R/2D*100
Calculate the percentage of Bow/ twist as follows:
BL=RL/L100 BW=RW/W100
Percentage Twist = R/2D*100
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ViJay (威望:0) (广东 珠海) SQE
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