0.628 7.87 35.60314961
最大温升 由最大温升得过孔最大电流 1 0.20 每个过孔最大电流= 每个过孔最大电流 计算所需过孔最小数目 需要流过的电流（A） 需要流过的电流（ ） 最少需要过孔的数目 = 4.00 5 20 ° C
mil密耳 微米 39.37 60 = = 毫米 Oz 1 1.64
Please Note I have created the Via Calculator on information I found from various sources. The via calculator simply converts the drill size into its Circumference And assumes this behaves the same as a trace Due to a lack of Data I cannot confirm the accuracy of this calculator (use as rough guide only). Designed This means it is down to the User to determine its accuracy. By This Program was designed by Phillip Restall and is in no way connected with Aculab plc.