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Can Silicon Surge Voltage Suppressors Reach the Absorption Energy Capability of Varistors?
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| Author(s) |
V. N. Obreja; A. Obreja; K. I. Nuttall |
| Abstract |
The absorption energy capability of commercial available varistors reaches hundreds of Joules at surge conducting currents of thousands of Amperes. In this paper a short analysis of characteristics and limitations of the most common surge voltage absorbers (silicon suppressors and varistors) is carried out. Typical experimental results are presented for some silicon transient voltage suppressors. Commercially available silicon surge voltage suppressors exhibiting comparable absorption energy with low dimension varistors are indicated. To reach the absorption energy capability of varistors of higher nominal voltage or large dimensions, surge suppressor modules have to be realized by series connection of silicon bi-directional structures of lower breakdown voltage. Preliminary results are reported. Some limitations preventing achievement of a higher absorption energy of available silicon structures with bulk avalanche breakdown are presented. |
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| Filename: | EPE-PEMC2002 - T2-003 - Obreja.pdf |
| Filesize: | 230 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-05-13 by System |
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