PCBA Lecture Hall: How To Quickly Dismantle Wide-Body Components?
Unlike welding, the key to removing the device from the circuit board is that all the pin solders need to melt at the same time. The most common method of service welding is to use a hot air gun to weld all the pins of the heater at the same time. However, for wider devices, the use of soldering iron and solder alone can not meet the need to heat all the pins at the same time, with the help of thermal copper wire can play the role of widening the iron head.The following procedure shows the process of removing the Mini USB socket. This requires heating the pins of the USB socket from three sides. Heat-conducting copper wireWhat about a wider device? Use a longer heat conductive copper wire. Of course, in addition to the thermal copper wire, it is also necessary to apply more solder.
The disassembly process is a competition between the heating of the soldering iron and the cooling of the circuit board. If the soldering iron power is small, this heating process will be long. So using a high-powered soldering iron helps shorten the disassembly process.
Patient Heating, And Finally Remove The TQPF Chip
Add thermal conductive copper wire around, and then use solder to add a molten tin apron to the device, and finally the device will obediently leave as long as you have a good grasp of welding, in order to cope with any difficult device welding. kinhford Electronics Co., Ltd. specializes in providing integrated PCBA electronic manufacturing services, including upstream electronic component procurement to PCB production and processing, SMT patches, DIP plug-ins, PCBA testing, finished product assembly and other one-stop services.
The company gives full play to its competitive advantages in scale procurement and quality control, and has signed long-term cooperation agreements with many electronic component manufacturers at home and abroad and around the world to ensure the quality and stable supply of raw materials, and transfer the benefits to customers.
Long-term maintenance of IC, resistors, capacitors, inductors, audiodes and other components procurement advantages, can greatly save customers' inventory costs, improve production turnover efficiency, save time. Currently for the United States, Britain, Japan, Russia, France, Canada, Australia, Romania, Switzerland and other countries and regions to provide PCBA processing services.
Through the hole plug oil is to guide through the hole with ink inside the hole to make the plug hole, emphasizing the quality and tightness of the plug hole. The treatment and inspection standard of the plug oil is that it is not transparent, and it must be covered with ink and blocked. Secondly, the hole can not appear yellow phenomenon, and do not touch tin.
Through the hole plug oil process is an important supplement to through the hole cover oil, generally high-quality PCB board will require to make through the hole plug oil. Through the hole plug oil first through the hole full hole plug ink, after the plug hole can not be transparent to block the hole, so that the ink on the solder resistance ring will not flow into the hole, so as to achieve the effect of no yellow through the hole. The smaller the hole, the easier it is to plug, and the hole of the oil is not too large, the maximum is 0.5mm, so it is recommended to cover the hole oil for holes larger than 0.5mm.
The pores mentioned above are usually used for interlayer conduction. Therefore, in order to avoid short circuit when the board is used, it is usually done to cover the oil, which not only ensures the electrical performance, but also avoids the risk of short circuit with other components during use. Therefore, if some PCB needs to pass the hole as a test point or heat dissipation, it will be done to open the window.
Shenzhen Kingford Technology Co., Ltd. is a circuit board manufacturer specializing in printed circuit board manufacturing, 20 years of focus on single, double sided, multi-layer circuit board production. Can provide impedance board, HDI board, blind hole board and other multi-layer PCB board proofing, small batch production business.