解答1:
100mil=2.54mm=2540um
1um=1/25.4mil 约0.04mil
um即微米
近似计算 1oz=1.35mil=35um
解答2:
1oz=1平方英尺cu的质量=28.349523125g
厚度X1平方英尺Xcu的密度(8.96g/cm2)=28.349523125g
由上可得1oz PCB 铜箔厚度=0.00340571124cm=34.0571124微米
而1MIL=1/1000英寸=25.4微米
1oz/1MIL=34.0571124/25.4=1.34083119685
1OZ=31.10348g