1. For individuals working in the PCB industry, encountering different units of data is inevitable. The need for converting between these units and searching for conversion values is common. This is especially true for PCB practitioners, including PCB engineers and PCB electronic engineers.

2. To make this process more convenient, it is important for personnel in the PCB industry to use and learn various conversion methods.

1mil in mil

Line width/line pitch/plating thickness Common units: 1um (1 micron)=0.001 mm (0.001 mm)

1um=0.03937mil

1um=40uin (micro inches)

1um (1 micron)=0.001mm

1mil in mil=0.0254MM (Conversion reason: 1mil=1/1000inch=0.00254cm=0.0254mm)

As we all know, 4mil/4mil=0.1mm/0.1mm line width line spacing 1mil in mm=25.4um 1mil=1000uin mil, sometimes also known as English wire II (common unit of copper thickness in pcb board) 1OZ (ounce)=35UM (micrometer)=28.35g/square foot

1OZ (ounces)=28.35 grams, which is in English units

1OZ (oz)=28.35 grams per square foot=35 um micrometer H/H=18 um/18 um micrometer double-sided plate with both sides of 18um copper thickness Three relatively uncommon bit conversions:

1 foot=12 inches

1 inch inch=1000 mil

1ASD=1 ampere per square decimeter=10.76 amperes per square foot (1 square decimeter=10.76 square feet)

1AM=1 ampere minute=60 coulombs, mainly used for precious metal electroplating such as gold plating

1 square foot=9.29 square decimeters 1 gallon (English)=4.5 liters

1 gallon US=3.785 liters

1KHA=1000Ah

1 ampere hour=3600 coulombs

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