source:other news release time:2023-08-15 Hits: Popular:led screen wholesaler
Soldering wire is the process of connecting a chip and a bracket with gold wire. The original material used is gold wire. Currently, there are two types of wire in the market: alloy wire and gold wire. Gold wire is divided into 0.7, 0.9, 1.0, 1.2, etc. according to thickness. The cost of making 1W of alloy wire is 0.01 yuan, and if the cost of gold wire is 1.2 yuan, it is 0.07 yuan. Many people make 1W, 0.4-0.6 yuan, 1W of 35mil so-called crystal bead, which is basically made of alloy wire; The 0.8 yuan arranged 35mil crystal bead has a gold wire base of 1.0 gold wire, while the 1 yuan arranged 35mil crystal bead has a base made of 1.2 gold wire. The ductility of gold is very good. LED light beads are lit and sealed, causing thermal expansion and contraction. If the alloy wire is simply cut off, the lamp will have a shorter lifespan than the 1.0 gold wire. However, a brief inspection cannot determine the lifespan. It is recommended to choose a good light bead with a longer lifespan.
The powder dispensing process mainly involves coating fluorescent powder on the chip and creating different white light color temperatures according to customer needs. The materials used include fluorescent powder and adhesive mixed with fluorescent powder. Generally, good fluorescent powder is currently priced at around 8 yuan per gram. Compared to low-end fluorescent powder in China, the price is priced at 1 yuan per gram, with a significant difference in cost; The glue used for mixing fluorescent powder is currently good at 4500 yuan per kilogram, while many domestically produced ones cost around 1000 yuan, and the cost also varies greatly. Poor fluorescent powder and glue will exhibit color temperature drift under equal heat dissipation conditions. It is recommended not to use lamp beads with poor contrast.
As is well known, LED is the abbreviation for light-emitting diode. In 1962, General Electric Company (GE) manufactured the first LED that emitted red visible light. Afterwards, various colored light-emitting diodes (yellow, green, orange, etc.) were also invented, in addition to white and blue.
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