A team of Fuji Electric and the Hong Kong University of Science and Technology announced a new technology at ISPSD 2016 to reduce the area of ​​the diode's Eedge Termination. This technique allows the length of the edge termination to be reduced to less than 1/5 compared to the edge termination that previously provided the guard ring. As diodes continue to be miniaturized, active regions that function as elements become smaller and smaller, and edge terminals occupy a larger and larger proportion of the diode chips. Especially the output current of smaller diodes, the proportion of the edge terminal larger. In a 600 V 5A diode used for white goods and the like, the length of the edge terminal is about 350 μm, and the proportion of the entire chip area reaches about 55%. Therefore, the research team began to study how to reduce the edge of the terminal. This time, the trench was dug at the diode surface and the trench was filled with "BCB (benzocyclobutene)" or the like. With the active area of ​​0.55 mm 2 (equivalent to 2 A), the edge termination was provided with this structure, and the withstand voltage of 755 V was obtained with a length of 35 μm only. According to reports, this value is less than the previous use of guard ring mode edge terminal 1/5. Tubular tungsten carbide welding rods are a type of welding consumable used for hardfacing applications. They are made by filling a tubular steel rod with a mixture of tungsten carbide particles and a binder material. Welding Rod,Welding Rod Price,Best Welding Rods,Tungsten Welding Rod Luoyang Golden Egret Geotools Co., Ltd , https://www.xtchvof.com
The tungsten carbide particles provide exceptional hardness and wear resistance, making them suitable for applications where the welded surface needs to withstand high levels of abrasion, erosion, or impact. The binder material helps to hold the tungsten carbide particles together and facilitate the welding process.
Tubular tungsten carbide welding rods are typically used in industries such as mining, construction, oil and gas, and agriculture, where equipment and machinery are subjected to harsh operating conditions. They can be used for hardfacing various components, such as drill bits, crusher hammers, wear plates, and cutting tools.
The welding process for tubular tungsten carbide rods is similar to other types of welding, such as shielded metal arc welding (SMAW) or gas tungsten arc welding (GTAW). The rods are typically welded using a high heat source, such as an electric arc, to melt the rod and create a strong bond with the base metal.
Overall, tubular tungsten carbide welding rods are a popular choice for hardfacing applications due to their exceptional hardness and wear resistance properties. They help extend the lifespan of equipment and machinery, reducing maintenance costs and downtime.