With extreme high surface insulation resistance. 具有极高的表面绝缘阻抗值。
Test method of surface insulation resistance for printed boards GB/T4677.1-1984印制板表层绝缘电阻测试方法
It'mainly concludes these characteristic parameters, such as visual, dryness, ion contamination, welding flux residual, surface insulation resistance and electric migration et al. 这些参数主要包括:外观、干燥度、离子污染、助焊剂残留、表面绝缘电阻(SIR)和电迁移等。
Prepared by molten salt immersion resistance of the highest insulating film, the surface composition of α - Al2O3 content of up to; anodic oxidation method followed by the insulation film resistors; insulating film which prepared by direct oxidation is the lowest surface resistance. 液浸熔盐法制备的绝缘膜电阻最高,其表面成分中α-Al2O3含量也最多;阳极氧化法制备的绝缘膜电阻次之;直接氧化法制备的绝缘膜表面电阻最低。