Toshiba LED bulb dismantling 757 Nichia why such a cock?

By chance from the TOSHIBA bulb that light is used in 757 products Nichia company. Judging from the appearance of the product should be 757D series. This product is the leader in SMD3030 products.

This is a production of Nichia power products using thermal plastic material support, referred to as EMC domestic support. Find some descriptions about the thermal plastic material in Nichia's website.

"The birth of new external packaging materials of the LED package Nichia appeared new options. The perfect formula using thermosetting material and inorganic material model letters in the material not only increases the light reflectance and structure stability (see below), but also enhance the even high temperature corrosion resistance. This epoch-making packaging material can be used to replace the low cost of plastic packaging and high cost of external packaging. "

At the same time, there are some shortcomings in the traditional PPA materials, which are as follows: "the traditional plastic packaging materials can be degraded under the influence of light, which is caused by the structure of benzene ring. The outer package, which is made of PPA resin with a benzene ring structure (poly methylene blue two formamide), has a thermal plasticity, which can be changed under oxidation and light excitation (see chart).

In addition PPA amide bond will decompose under heat effect issued by the LED when the driver, resulting in LED outside the package (yellow) color, low light reflectivity, luminous flux and color coordinate offset decreased details (see below).

The lamp through the heating platform from PCB removed, photoelectric test data are as follows:

For the color temperature of 2700K, to achieve this effect has been at the level of high-end products. Color rendering index and R9 index can also meet the requirements of the test certification standards. Product rated current of 150 mA, the actual test found that when there is a 250 Ma 100lm/w light efficiency, can be seen in the design is left margin.

Now the domestic market there are many 3030 support is made of EMC material, a pioneer of this design is arias. The future of EMC3030 products may be around 2W, or even higher. And EMC3030 is likely to replace the 1~2W ceramic high-power market. The idea of using two medium power chips to replace the 1 high power chips is also formed. There is a very much like Logo and Nichia enterprise to do is also very good. Only in the case of serious product homogeneity, may only be able to achieve the expected profits.

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