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SLMD481H12 Datasheet(PDF) 5 Page - IXYS Corporation |
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SLMD481H12 Datasheet(HTML) 5 Page - IXYS Corporation |
5 / 6 page IXYS reserves the right to change limits, test conditions and dimensions © 2010 IXYS All rights reserved IXYS KOREA LTD. 5 IXYS Corporation 906-5 Iui-dong, Yeongtong-Gu, Suwon, Gyeonggi-Do, Korea 1590 Buckeye Drive, Milpitas, CA 95035-7418 Phone +82-31-888-5232, Fax +82-31-888-5233 Rev. Feb. 2011 Phone (408) 457-9000, Fax 408-496-0670 SolarMD Description SolarMD is made of monocrystalline, high-efficiency solar cells in a surface mountable package. They’re robust and can be used in harsh environments. Solar cells used in SolarMD have a very high (22%) power conversion efficiency, which means that 22% of the light energy is converted into electrical energy. They’re extremely useful in applications requiring solar power generation in a limited space. Monocrystalline cells can be used in indoor and outdoor applications because they have a wide spectral sensitivity, 300 to 1100 nm. However, the output power of a solar cell is proportional (over a wide range) to the incoming light energy, and irradiance is generally much higher outdoors. The values in the data sheet are measured at “standard condition” of 1 sun, which is equal to 1000W per square meter sunlight irradiance at a defined light spectrum (air mass of 1.5) and 25°C cell temperature. Relative Lighting Power Density The figure above compares relative power density for various lighting conditions in units of Watts per square meter (W/m 2 ). The reference standard condition is 1 Sun and is equal to 1000 Watts per square meter of sunlight irradiance at a constant 25°C cell temperature and at 1.5 Air Mass (Air Mass stands for a well defined light spectrum which appears if the sunlight goes through the earth’s athmosphere at a defined angle). As the chart clearly shows, the power density of typical indoor lighting is dramatically lower than that of sunlight. Not only is irradiance from indirect and artificial light lower; the spectrum is also narrower. In typical Office Space lighting with a spectrum produced from incandescent or halogen light bulbs, the power output may be roughly 100 times less than bright sunlight. It may be 200 to 500 times less with fluorescent lighting due to the further limited spectrum. |
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