LED lamp beads development trend

Writing this headline is also due to a friend who sent a message asking me how to look at the Chinese LED market. I dare not write things that I am not familiar with to mislead everyone, so I just write about the changes and trends in the small market of LED devices, bringing you the development trend of LED devices in the eyes of engineers.
First, the gorgeous turn of SMD 2835
Since the end of 2011, the SMD2835 has appeared on the lighting market. The original bracket design concept is derived from the SMD3014 bracket. The solid crystal position is directly on the pad, the heat dissipation area is larger, and the heat conduction path is shorter. At the same time, due to the demand for luminous flux in the lighting market, the luminous flux output requirements of a single product are higher. Due to the larger solid crystal position, more chips can be arranged to form a certain string and combine. This brings more product positioning opportunities to the packaging factory.
Power: The SMD2835 is now available from 0.1W to 1W. Different material types of bracket materials and substrates can be used to achieve more product types.
Material: The 0.1W bracket is made of PPA plastic and iron substrate. The 1W substrate will use copper. Some plastic materials use PCT.
Voltage: For voltage, 3V~45V is available. 3V is used in single or multiple parallels. Higher voltage Some companies use multiple 3V chips in series, but also use high-voltage chips.
Trend: Domestic companies are mainly promoting SMD2835. Now Taiwanese companies and Korean companies are also preparing to develop SMD2835. With the further improvement of power and the cost requirements of lighting companies, it is just around the corner to replace SMD5630.
Second, the dynasty of SMD5630 has fallen
Speaking of SMD 5630, the first thing to mention is of course Samsung's LED-backlit TV. As the energy-saving effect of LEDs gradually disappears, the size of the liquid crystal display is getting larger and larger, and the product size is getting thinner and thinner. The requirements for backlighting are also increasing. The traditional T1, T2 tube bottom light source method can no longer reduce the thickness of the machine. LED products can always meet these needs. Compared to smaller power LEDs, the SMD5630 offers more luminous flux and a better design method that allows the light source to be placed on the side.
In terms of power, the SMD5630 product can provide higher heat dissipation than the SMD3528. The design of the bracket structure also facilitates heat dissipation and light output. In the lighting industry, the expansion of the SMD5630 in the lighting market has been spurred by the explosion of linear luminaires, such as tube lamps. The use of SMD5630 for lamp manufacturing can achieve higher light efficiency products, and its light distribution design is also more conducive to the use of linear lamps. At present, the main competitive market for Korean and Taiwanese companies is SMD5630, which has forced the price of SMD5630 to fall. After entering the lighting industry, companies are more demanding than the backlight. It has also led to a downward trend in the price of SMD5630 products. At the same time, in the future, more breakthrough cost bottom line, the use of SMD2835 to replace SMD5630 is already a general trend. (To be continued)

Ceramic Line Post Insulator are a type of steel insulator, Line Post Insulator is used for supporting wires and resisting electric current, High Voltage Line Post Insulation consisting of one or more insulating members permanently glued to a metal base, sometimes with a cap,and can be double mounted on a metal base. The head bolt or one or several bolts are steel mounted on the support structure. Porcelain Power Line Insulators are suitable for temperatures between -40° C to +40° C, heights below 1000m(1000m and above can be amend base on GB311.1-1997), frequencies not exceeding 100Hz, voltages above 1000V, and mechanical loads within the rated values of the product.

ANSI Class  57-1 57-2 57-3 57-4 57-5
Creepage Distance/mm 356 559 737 1015 1145
Dry Arcing Distance/mm 165 241 311 368 438
Cantilever Strength/kn 12.5 12.5 12.5 12.5 12.5
Low Frequency Dry Flashover Voltage/kv 80 110 125 150 175
Low Frequency Wet Flashover Voltage/kv 60 85 100 125 150
Critical Impulse Flashover Voltage, Pos/kv 130 180 210 255 290
Critical Impulse Flashover Voltage, Neg/kv 155 205 260 340 380
Test Voltage to Ground/kv 15 22 30 44 44
Maximum RIV at 1000KHZ/μv 100 100 200 200 200
Net Weight/kg 5.2 9.0  11.0  16 23
Dimensions of the pin/mm M20(M16) M20 M20 M20

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Line Post Insulator

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