ENERGIZING A SUSTAINABLE INDUSTRY WORLD LEADING  INDUSTRY SHOW ,2024 Hannover messe, Hall 4 Booth No. B86-7, Hi-Bit, a China EMS contract manufacture since 1996, we serve special markets include Industrial remote control,  Medical, Green engergy ...We waiting for you here.

What is Tomstoning? One end of the chip element is off the ground, as shown in below Figure . Tomstoning pictures How Tomstoning happen? (1) The solder paste melting time at both ends of the component is not synchronous or the surface tension is different, such as poor printing of the solder paste (one end is defective), deviation, and different sizes of the component solder ends. Generally, the melted end of the solder paste is pulled up. (2) Pad design - The pad extension length has an appropriate range (For exg.0201:0.1-0.2mm), and if it is too short or too long, it is easy to stand a monument, as shown in below Figure. (4) Temperature curve setting - Tomstoning generally occurs at the time when the solder joint begins to melt, and the heating rate near the melting time is very important. The slower, the better to prevent Tomstoning. (5) One welding end of the component is oxidized or contaminated and cannot be wetted. Special attention should be paid to components with single-layer...

Case: as shown in Figure 1, the crystal cold welding defective ratio is about 2%.   Figure 1: Cold welding on above soldering pin Cause: there are four blind holes on the second pin pad of crystal . As shown in Figure 2, some solder is absorbed, resulting in less solder on the pad and open welding. Figure 2: 4 Blind holes on the soldering pad Countermeasures: Expand the stencil hole for the crystal 2nd soldering pin, increase the amount of solder and compensate the solder shunted by the blind hole. After the stencil hole was expanded, the crystal cold welding was not found in the production process, and the problem was solved. Conclusion: Because HDI hole is a blind hole, tin absorption problem should not occur in theory, but this is not the case. This case is of typical significance. It tells us that even a very small blind hole may cause the problem of less tin. Therefore, the design of punching multiple blind holes on the pad should be resolutely eliminated in th...

December 2019, GoPro announced that it would move most of the production of cameras destined for the US out of China, due to the China-US trade war. Thanks to rising labor costs in China, and uncertainty around the trade war, organizations are busy exploring every possible outcome of relocating manufacturing, and many have their eyes on Mexico! In what ways are Mexico more appealing than China? The key concerns for purchasing manager and supply chain manager are rising labor costs, trade agreements with the US, costs of shipping, and energy costs. So, let’s explore them one by one: Labor costs – In 2012, the unit labor costs (which is equivalent to the wages adjusted for productivity) in Mexico was equal to that in China. However, by 2015, the manufacturing wages in Mexico had dropped to 30% lower than China. Many manufacturers, especially those whose products are labor-intensive, found the labor market in Mexico seductive. Trade agreements – While China is battling w...

Congratulation! Hi-Bit achieved a high score(91) graded by a famous healthcare customer from Europe in the annual audit.