DTA144WE二极管用什么型号代替？

此管比较特殊，并非二极管，建议用原型号，因为基极偏压电阻47kΩ、基极与发射极有反馈电阻22kΩ，SOT-523F封装，PNP三极管管。

参数如下图：

The current photovoltaic industry to explore a number of hot issues

Foreign leader in silicon material progress of the industry is more concerned about information and knowledge are not so consistent. At present, foreign manufacturers in the 10,000-ton there are many new trends, Hemlock in a meeting so that the 26,000 tons Another 30,000 tons are under way, so it is estimated that, Hemlock capacity in the future is likely to reach more than 60,000 tons. For Wacker, and some said the data was 18,000 tons, and some said to be 20,000 tons. It is understood that in fact it is also a plan to expand in the more than 30,000 tons. REC, including the current scale was also extended to more than 19,500 tons, is also planned in more than 30,000 tons, so the leadership of these companies are basically in the more than 10,000 tons.

In 7 of the world's leading silicon leader, 3 in the next few years may withdraw from the leadership ranks. South Korea's DC Chemical is currently under construction 15,000 tons, 30,000 tons is no exception was made in the planning, and has been implemented, so in the future should be more than 30,000 tons, Japan M. Setek is also in the more than 30,000 tons, is currently under construction 15,000 tons, the future of these companies are in the 10,000-ton. Foreign leader in silicon material cost control in all 15 U.S. dollars to 25 dollars, so according to the report of Professor Cui, component costs will be less than 1 U.S. dollar, largely on conventional energy sources could compete.

The second to share with you some foreign purification of metallurgical silicon (UMG) new progress in the exchange, we are very concerned about foreign purification of metallurgical silicon solar grade silicon production progress. In the next few years, the use of metallurgical silicon purification Made of thin film batteries and battery market share increased, but the cost, crystalline silicon believe in the future for a long time are the dominant, 70% to 80%. Crystalline silicon have a lot of advantages, from 10,000 -Ton large-scale production, production costs are 15 to 25 U.S. dollars betweenand efficiency of crystalline silicon cells is much higher than the other two technologies, is currently 16%, 18% in the future may be promoted to the other major components The scale of the production cost is relatively low in comparison, the silicon crystal in the future will be dominated by long-term.

We may be concerned about the battery UMG, especially at this time by using silicon material of bile. The market has seen LDK and the existing partners in some markets has been very good at the same time, but there are also some disadvantages. Research in the 80 manufacturers, there are three more optimistic about the situation, a minimum growth of 6 U.S. dollars, the other two are basically in the 15-20 U.S. dollars in the short term, the two have a competitive advantage in the long term The two manufacturers, and most of the polysilicon in a similar vein, the advantage is not obvious.'s Only 6 dollars a cause for concern. But in the efficiency, UMG and the crystalline silicon is the basic compared to 2 percentage points lower , As well as other components of the battery technology costs are rising sharply, so from a comparative point of view eventually, UMG certainly has its battery market. But in the next few years to replace polysilicon is not possible, but it can promote the polycrystalline Silicon material prices decline. UMG's production over the next 2 years to reach 20,000 tons were several, because of its existence, the polysilicon material prices will gradually reduce.

The third problem is that crystalline silicon thin film battery cell and the relationship, which may be more concerned about the industry. Can now be delighted to see the semiconductor industry there are a lot of talented people into the thin film battery industry, solar energy industry is currently very small industry, so The more investment the more business the more talented people to join the act, the industry has a very good role. Photovoltaic industry and the semiconductor industry were also compared to other industries is not too much, but too Lessmoney coming in rather than too much, too little, but the office is not a matter of R &D too much, but too few. As the industry grew, the photovoltaic industry will have more opportunities. Film Applications range from the battery, and the crystalline silicon cell is not the same, including the final application. Thin film batteries will be used in construction, as well as integration in the desert in the construction of large-scale photovoltaic power plants, not to replace the current application of crystalline silicon market And thin film battery current efficiency of crystalline silicon and is much lower compared to the system to high-cost, but also limit the cost of their own.

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