LED heat dissipation is the biggest headache for LED manufacturers. However, the use of aluminum or copper substrates can effectively derive internal heat. Aluminum substrate and copper substrate adopt SMT surface mount technology, and all components on the surface must be surface mount devices. However, the problem has also come along. At present, through-hole terminals used on PCBs cannot meet the mounting process requirements. Most terminal manufacturers cannot provide true SMT surface-mount terminals. Many LED manufacturers do not know how to do this. , had to be welded directly on the PCB board.
On the surface, this connection method saves a lot of costs, but there is a huge potential safety hazard. According to an article by Mr. He, deputy director of the Tianjin Illuminating Engineering Society, all the street lamps that have LED failures are exposed. The problem of low levels of production technology at different levels, such as the lack of entanglement between the welding line and the welding column, and the lack of protective sleeves for welding sheets, etc. As we all know, the power of LED street lights is large, and the amount of heat generated is also very large. Especially in the summer when the temperature inside the lamp is higher, it is very easy to cause the wire to soften and fall off. Furthermore, the protection device without insulation material can easily be caused. Electric shock; In the case of external force pull the wire is also easy to fall off, the situation is very easy to break, at the same time, also bring great inconvenience to maintenance. This type of wiring is virtually impossible to achieve in Europe. European regulations require the use of terminals or connectors as a relay station to bridge the current and electrical equipment.
In order to meet the requirements for miniaturization of components and low production costs on the market, WECO Corporation, a pioneer in connection terminals, is dedicated to the innovation of terminal blocks and connector products. After years of experience in technology and experience, SMO has continuously developed and improved SMD surface mounts. Installed terminal series products, this provides a perfect solution for LED aluminum substrate, copper substrate using surface mount technology. LED manufacturers no longer need to use manual workshops in the form of high-temperature welding wire directly welded on the LED aluminum substrate or copper substrate, and the use of WECO's original SMD surface mount terminal wiring, welding is stable and reliable, wiring is safe and convenient, there are many Well-known LED lighting manufacturers use WECO's surface mount products, greatly enhancing the market competitiveness of their products.
What are the advantages of SMD SMT products?
ï¬ * The PCB board, aluminum board, and copper board do not need to be drilled. The components can be mounted on both sides of the PCB board, aluminum board, and copper board, greatly improving board utilization.
ï¬ * Reduce damage to the PCB due to improper drilling.
ï¬ * Some PCB board surfaces are not very flat. We use WECO's SMD surface mount products to completely fit the components to the PCB board through the original “floating anchor†technology to achieve 100% coplanarity and reliable welding. Strong peel force.
ï¬ * Molded case is made of high temperature resistant thermoplastic material, achieving V-0 flammability rating.
ï¬ * Suitable for reflow soldering process, plastic shell high temperature 260 °C, duration 15-30 seconds.
ï¬ * The top of the terminal is covered with a high temperature resistant suction cup to facilitate the sucking of the nozzle of the placement machine. The entire terminal can be packaged in the braid, which is suitable for automated assembly and greatly improves the welding efficiency and stability.
Application areas of SMD surface mount products:
Surface-mounted terminal blocks and connectors are not only used in LED lighting fixtures, but also widely used in LED aluminum substrates and copper substrates in the following industries: Solar inverters; Audio equipment: input and output amplifiers, balanced amplifiers, audio amplifiers, front-end Amplifiers, power amplifiers, etc. Power supplies: switching regulators, DC/AC converters, SW regulators, etc.; communications electronics: high-frequency amplifiers; office automation equipment: motor drives.
Of course, SMD SMD terminals are not limited to the above industries. They are also applicable to traditional industries such as industrial control, building intelligence, heating, HVAC, and motor drives.