For personnel engaged in the circuit board industry, it is inevitable to encounter various data units The conversion between various units is also often needed Often need to find out the conversion value In order to facilitate PCB personnel, the following examples list the conversion values between various units for your reference Chinese and English abbreviations are indicated I believe that the following unit conversion is worth your look
Common Unit Conversion:
1oz (ounce) = 35um (micron) = 2835 grams square feet.
1oz (ounces) = 2835 grams, this is an imperial unit
1oz (ounces) = 2835 grams square feet = 35um microns.
1um (1 micron) = 0001mm（0.001 mm).
1um=0.03937 mil
1um = 40uin (some companies call microinches microinches, but in fact microinches).
1um (1 micron) = 0001mm
1mil=0.0254mm (conversion from: 1mil=1 1000inch=0.)00254cm=0.0254mm )
This results in: 4mil 4mil = 01mm/0.1mm line width and line spacing.
1mil=25.4um
1mil=1000uin mil is sometimes also used as silk.
Relatively infrequent bit conversion:
1 foot = 12 inches
1 inch inch = 1000 mil
h = 18um microns
1ASD = 1 ampere square decimeter = 1076 amps square feet (1 square decimeter = 10.)76 sq ft.
1am = 1 ampere-minute = 60 coulombs It is mainly used for *** electroplating such as gold plating
1 square foot = 929 square decimeters.
1 gallon (imperial) = 45 liters
1 gallon US = 3785 liters
1KHA = 1000 ampere-hours
1 ampere-hour = 3600 coulombs