Dielectric Withstanding Voltage (Hipot Method) – Thin Dielectric Layers for Printed Boards
1 Scope The dielectric withstanding voltage test (Hipot test) consists of the application of a voltage higher than the operating voltage for a specific time across the thickness of the test specimen’s dielectric layer. This is used to prove that [...]
Resistance of Copper Foil
1 Scope This test method is used to determine the resistivity of copper foil. 2 Applicable Documents ASTM-B-193 Resistivity of Conductive Materials. 3 Test Specimen 3.1 Three samples should be selected at equal distances across the width of the material [...]
Arc Resistance of Printed Wiring Material
1.0 Scope This method describes a technique for evaluating a material to resist tracking when subjected to a low current arc just above the surface of the material. It can be used on materials of various thickness by stacking materials. [...]
The Technology FR-4 Sheet
Affected by the Covid-19 in the past year, many companies have stopped work and production, the market growth of the electronics industry and the composite material industry has declined. However, the global market demand for FR4 epoxy insulating sheet and [...]
How to solve the problem of warping in FR4 sheet and copper clad laminate production
When factories produce insulating boards and copper clad laminates, various production abnormalities are often found. These conditions will affect the progress of production and the yield of products. The most common problem is the warping of FR4 sheet and copper [...]
Environmentally friendly halogen-free and lead-free FR4 insulation laminates and copper clad laminates
Human development is always closely related to the environment. In the electronics industry, halogen-free laminates and lead-free processes are the two core concerns. The development of halogen-free laminates was in the mid-1980s, and the real industrialization was around 1997. The [...]
Various Exceptions And Solutions Of FR4
FR4 epoxy insulating board is a new type of review material made of glass fiber cloth and resin. The fusion of the two materials during the processing and production process will cause some abnormalities. The production department must deal with [...]
The difference between G10 insulation board and FR4 epoxy board
Both G10 and FR4 are composite materials which made of glass fiber cloth and epoxy resin. Due to different production processes, the corresponding uses are also different. Many people mix G10 insulation board and FR4 insulation board into one board, [...]
Four common FR4 epoxy sheet processing methods
The FR4 epoxy sheet produced by the combination of glass fiber cloth and resin is in the shape of a flat plate. If you want to make various shapes, you need to process the FR4 board. There are four common [...]