Gas-filled surge arrester, activating compound, ignition stripes and method therefore
Technology of a surge arrester, compound, used in the field of electronic components
Inactive Publication Date: 2008-10-29
LITTELFUSE INC
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Problems solved by technology
Such power dissipation enables gas-filled tube surge arresters to withstand high voltage and / or high current for longer continuous periods of time than clamping devices and protects the load from damage caused by high voltage and / or high current
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A gas-filled surge arrester includes at least two electrodes, a gas filling and an activating compound applied to at least one of said electrodes. The activating compound can include: (i) nickel powder in an amount of about 10% to about 35% by weight; (ii) potassium or sodium silicate in an amount of about 20% to about 40% by weight; (iii) titanium powder in an amount of about 5% to about 25% by weight; (iv) calcium titanium oxide in an amount of about 5% to about 15% by weight; and (v) sodium bromide in an amount of about 10% to about 20% by weight. Ignition striping process and resulting stripes from ink-jetting of striping material are disclosed.
Description
Background of the invention This invention relates generally to electronic assemblies and more particularly to surge protection and gas-filled tube surge arresters. There is an increasing need to protect sensitive electronic components from overvoltage surges. There are different devices available on the market for this purpose. Some of these devices may be better suited for certain applications. There are generally two classifications of surge protection, each of which includes different types of devices. One classification of surge protective devices is the "crowding circuit" classification. The arc extinguishing device includes an air gap, a carbon block, a silicon controlled rectifier (SCR), a voltage variable material (VVM) device and the gas-filled tube surge arrester of the present invention. Another classification of surge protective devices is the "clamping" classification. Clamping devices include Zener or avalanche diodes and metal oxide varistors (MOVs). A ...
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IPC IPC(8): H02H9/06
CPCH01T4/12H01T1/14H01T2/02
Inventor K·洛德S·J.·惠特尼
Owner LITTELFUSE INC
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