During electronica 2014, First Resistor & Condenser Co., Ltd. (Firstohm) will showcase the world’s first surge absorber in 0204 MELF packaging and wirewound resistors with enhanced anti-surge capability. Both products echo Firstohm’s product development focus – smaller circuit designs and rising demand for circuit protection.
Traditionally, in operating environment where capability of high-power handling is required, wirewound resistor is usually the first choice because of its high stability. However, when it comes to anti-surge performance, reliability of wirewound resistors may not be as laudable due to possible weakness of the welding spot where both wire-ends are fixed to the metal caps. Production process to overcome this disadvantage and perform consistently against high-voltage surge impact may render the use of anti-surge wirewound resistors costly and unpractical in many application areas.
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Firstohm Spark Gap Surge Absorber (SGS series), is the first non-resistor product by Firstohm. SGS protects the circuits (and other components) by acting as a switch and short-circuiting unwanted electrostatic discharge (ESD) through the porous layer when the spark-over voltage is exceeded. Eliminating gas tubes (or ceramic tubes) and special gas that are essential for the conventional gas discharge tubes, SGS series would help reduce surge protection related costs in a network setup. Furthermore, Firstohm SGS has the advantages of high insulation resistance, low capacitance, and fast response time.
This year, in response to increasing market demand for smaller circuit designs with unaffected, or sometimes even more powerful, performance, Firstohm further introduced ESD absorber in surface-mount cylindrical packaging – ESD Surge Absorber MELF (ESM204).
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Technology behind Firstohm Surge Absorber – SGS and ESM series – has been patented in China, Europe, Japan, and Korea. Visitor will be able to test Firstohm surge absorber using a simple set-up during this year’s electronica.
source: http://www.powerpulse.net/story.php?storyID=31059
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