Ixys KXOB22-12X1 KXOB22-12X1L Scheda Tecnica

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IXYS reserves the right to change limits, test conditions and dimensions                            © 2010 IXYS All rights reserved 
IXYS KOREA LTD.                                                                                                     
4                               
IXYS Corporation 
AICT 4F, A Dong.145 Gwanggyo-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, Korea (443-270)          1590 Buckeye Drive, Milpitas, CA 95035-7418 
Phone +82-31-888-5232, Fax +82-31-888-5233                        Rev. MAR. 2013            Phone (408) 457-9000, Fax 408-496-0670
 
 
Background 
 
Some basic information needs to be covered to better understand what to expect in terms of 
the 
SolarBITs
 performance with regards to solar cell type, lighting conditions in terms of 
power density, and general industry standards as they relate to battery charging.   
 
Solar Cell Types   
Keep in mind these cost and performance tradeoffs when comparing various solar cell 
materials:  
 
Polycrystalline cells are commonly found in outdoor applications and have a spectral 
sensitivity range of 500nm to 1100nm. They’re in the medium price range and typically offer 
a 13% power conversion efficiency.   
 
Monocrystalline cells, such as the IXYS 
SolarMD
, have a spectral sensitivity range from 300 
nm (near-ultraviolet) to 1100 nm (near-infrared), which includes visible light (400 to 700 nm). 
Due to this wide spectral range, they can be used in both indoor and outdoor applications. 
Monocrystalline or single-crystalline material is the most expensive but it does not contain 
impurities, and as such the power conversion efficiency does not degrade over operating time. 
The power conversion efficiency of commercially available monocrystalline cells ranges from 
15 to 22%. The surface of these cells is a homogenous dark blue or dark grey.   
 
Finally, amorphous cells, which work in the spectral range of 300nm to 600nm, are used 
predominantly indoors in products such as solar powered calculators since they are not 
sensitive to the upper light spectrum and cannot take advantage of natural sunlight. They 
offer about 5% power conversion efficiency and are mostly used with ultra low power devices 
like clocks and electronic calculators. Amorphous cells, like polycrystalline cells, suffer from 
efficiency degradation.