Toy car electronic board PCBA circuit boardAdvantages of SMT processing in Guangzhou What are the advantages of SMT processing? SMT chip processing is also surface mounting technology. The main conte
Toy car electronic board PCBA circuit board
Advantages of SMT processing in Guangzhou
What are the advantages of SMT processing? SMT chip processing is also surface mounting technology. The main content refers to placing components with chip structure or miniaturized components suitable for surface assembly on the surface of the PCB board according to demand and then soldering using reflow soldering and other welding processes. Get up and complete the technology of electronic component assembly. On the SMT circuit board, the solder joints and components are on the same side of the board, so on the PCB board processed by SMT patch, the through holes are only used to connect the wires on both sides of the circuit board, and the number of holes is much less The diameter of the hole is also much smaller. Such a design can greatly increase the component mounting density of the PCB board.
The following Xing Enyu introduces the advantages of comparing SMT patch processing and traditional plug-in methods to everyone:
1. The size and volume of the chip components used in the miniaturized SMT chip processing are much smaller than those of the traditional plug-in components, which can usually be reduced by 60% to 70%, so that it can be reduced by 90%. The weight is reduced by 60% to 90%. This can meet the development needs of miniaturization of electronic commodities.
SMT chip processing
2. The signal transmission speed is high. The PCB board processed by SMT has a compact structure and a high mounting density, which can achieve the effect of short connection and small delay, thereby achieving high-speed signal transmission. At the same time, it can make electronic products more resistant to vibration and shock.
3. High-frequency characteristics SMT chip processing components are usually no lead or short lead, which reduces the distribution parameters of the circuit and thus reduces radio frequency interference.
4. It is beneficial to the automatic production of SMT chip processing. The shape of chip components has many features such as standardization of size, serialization, and consistency of welding conditions, which can make SMT chip processing highly automated.
5. Low material cost The packaging cost of most PCBA chip processing components is now less than that of plug-in processing components of the same type and function.
6. High production efficiency SMT placement technology simplifies the production process of electronic complete machine products and reduces production costs. The entire production process is shortened and productivity is improved.
Tag: SMT processing
长沙SMT贴片加工焊锡与拆卸
SMT贴片加工的拆卸和焊接方法有哪些？SMT贴片加工部件要去掉，通常来将，就不是那么简单的了。是需要经常练习才能熟练掌握，要是强行拆卸，很容易破坏SMT贴片加工的元件。那么下面就让星恩钰来为你讲解下SMT贴片加工的焊锡与拆卸的方法吧：
对于脚数比较少的SMT贴片加工元件，如电容、电阻、双极和三极管，首先在PCB板上的一个焊盘上进行镀锡，然后左手用镊子将SMT贴片加工元件夹到合适的安装位置，并将其固定在电路板上，右手将焊盘上的销焊接到售出的焊盘上。左手的镊子能够松开，其余的脚也能够用锡丝代替焊接。这类SMT贴片元件也比较容易拆卸，只要元件的两端与烙铁同时加热，熔化锡后轻轻抬起便能够拆卸下来。
SMT贴片加工哪家好
对于针数比较多、间距比较宽的SMT贴片加工元件，需要选用类似的方法。首先，在焊盘上进行镀锡，然后用镊子夹持元件在左侧焊接一只脚，然后用锡丝焊接另外一只脚。用热风枪拆卸这些部件通常更好。一只手持热风枪熔化焊料，另一只手在焊料熔化时，使用镊子等夹具去慢慢移除组件。
对于销密度高的部件，SMT贴片加工的焊接工艺也是一样的，就是先焊一只脚，然后用锡丝焊其余的脚。脚的数量大而密集，钉和垫的是否对齐是关键。通常情况下，角上的焊盘镀上很少的锡，部件用镊子或是手与焊盘对齐。销的边缘需要对齐。那些元件被稍微用力压在印刷电路板上，焊盘上相应的针脚用烙铁去进行焊接。销密度高的部件主要拆卸工具是热风枪，用镊子夹住部件，用热风枪来回吹扫所有销，熔化时将部件提起。要是需要拆下的部件，不可以吹向SMT贴片加工的部件中心，时间应当尽可能短。拆下部件后，用烙铁清洁衬垫。
标签: SMT贴片加工
长沙SMT贴片加工的车间需求
SMT贴片加工对环境的需求、湿度和温度全是有一定的条件需求，同时为了确保电子元器件的品质，促使能如期完成加工数量，对办公环境有以下几点需求：
1、电源
通常必须单相AC220（220±10%，0/60Hz），三相AC380（380±10%，50/60Hz），电源的功率要超过功耗的一倍之上。
2、气源
SMT贴片加工需要清洁、干燥的净化空气，为此必须对压缩空气进行去油、去尘、去水处理。用不锈钢板或耐压塑料管做空气管道。
SMT贴片加工
3、排风
SMT贴片加工的回流焊和波峰焊设备需配备排风机。针对全热风炉，排风管道的最低流量值为500立方英尺/分钟（14.15m3/min）
4、温湿度
生产车间的环境温度以23±3℃为最好，通常为17～28℃，相对湿度为45%～70%RH.依据车间大小设定合适的温湿度计，进行定时监控，并配有调整温湿度的设施。
SMT贴片加工
5、防静电
SMT贴片加工厂的工作员需配戴防静电衣、鞋，防静电手环才能进到加工车间，防静电工作区应配备防静电地面、防静电坐台垫、防静电包装袋、周转箱、PCB架等。
标签: SMT贴片加工
