Dry etching refers to the removal of material, typically a masked pattern of semiconductor material, by exposing the material to a bombardment of ions that dislodge portions of the material from the exposed surface. Unlike with many of the wet chemical etchants used in wet etching, the dry etching process typically etches directionally or anisotropically. [...]

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Lead-Acid Gel batteries are used in back-up power supplies for alarm and smaller computer systems (particularly in uninterruptible power supplies) and for electric scooters, electrified bicycles, transportation and marine applications. Unlike wet cells, gel cells are sealed, with pressure relief valves in case of overcharging. During normal use they cannot spill liquid electrolyte. In the [...]

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In an earlier blog concerning CAPLINQ’s UL Certification policy, it was outlined how CAPLINQ supports its customers with the UL certification of polyimide and other tapes. This time, the differences between UL94 V-0 and UL94 VTM-0 will be described. Certification Classification For tapes and other thin materials, the certification classification typically used is UL94 VTM-0. [...]

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As described in the article “How Polyimide Tapes are Made“, tapes are composed of two distinct layers, each of which is critical to the properties of the final product. The first layer is the backing material, and whether this is polyimide film (the generic verison of DuPont’s Kapton), polyvinyl chloride (PVC), Polyethylene terephthalate (PET), or [...]

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