Regarding the soldering process and solder paste selection for TWS Bluetooth headphones

I believe everyone has noticed in life that with the acceleration of the pace of life, we tend to choose products that are more portable for our daily use. Headphones are no exception. BecauseTWSThe portability advantage of Bluetooth headphones, coupled with the cancellation by mobile phone manufacturers3.5Millimeter interface. In life, fewer and fewer people choose wired headphones, and instead, they chooseTWSMore and more people are using Bluetooth headphones. Facing such a huge market, domestic and foreign manufacturers have followed suit one after another and joined inTWSToday, Shenzhen JJY specializes in the production of Bluetooth headphonesSolder paste manufacturerLet's talk about itTWSThe soldering process of Bluetooth headphones and Solder pasteSelect:

What isTWSHeadphones?

It is generally composed of a main control chip, a battery, a flexible circuit board and an audio controller, etc.TWSHeadphones do not have traditional physical wires, left or right2A pair of headphones form a stereo system via Bluetooth. Just connect a mobile phone to one receiving end, and this receiving end will wirelessly transmit the stereo sound to the other receiving end to form a stereo system.

To meet consumers' daily needsTWSBluetooth headphones need to have features such as safety, portability and long battery life. Therefore, headphone manufacturers need to install the most functional modules and the largest battery volume in the smallest space. And due to its wireless design, the requirements for anti-drop and anti-shock capabilities are also very strict.

To meet the above requirements, there are very high demands on the precision of each component and the welding process level between the modules.

one.Selection of welding process

In terms of soldering technology, most factories nowadays use manual soldering. Traditional manual soldering is highly flexible and less likely to cause damage to headphones, but the soldering speed is relatively slow. Some highly automated devices will use automatic soldering machines for soldering. This method consumes a lot of materials, has inaccurate soldering accuracy, and is prone to damaging the earphone casing. However, the soldering speed has been greatly improved, being about five times that of manual soldering. In addition, there is laser soldering, which has become popular in recent years.

Advantages of laser soldering:

1It is suitable for soldering small and precision parts and places where the soldered parts are sensitive to temperature.

2Fast heating speed, precise positioning, and can be used in0.2Completed within seconds.

3As long as the surface of the workpiece is kept clean, there is no need to use flux, eliminating the need for secondary cleaning and ensuring the service life of the workpiece to the greatest extent.

4Non-contact welding, no generation of static electricity.

5The yield rate of solder is higher than that of ordinary automatic soldering machines.

6It is equipped with a visual positioning system and is suitable for assembly line production.

two.Selection of solder paste

The first thing we need to consider is safety. Since headphones come into close contact with the human body when in use and are very close to the head, it is necessary to choose solder paste that poses less harm to the human body. Secondly, sound quality is a major criterion for consumers to judge the quality of headphones, so we need solder paste that can ensure the sound quality does not deteriorate. Finally, what we need to consider is the residual problem during welding.TWSThe components used in headphones are relatively delicate and difficult to clean, so the residue after welding must be minimal.

According to the requirements listed above, the most suitable one is lead-free silver-containing solder paste. Lead-free silver-containing solder paste has low environmental toxicity and leaves little residue after soldering, which can meet the requirements of human safety and no need for cleaning during soldering. Moreover, lead-free silver-containing solder paste has good wettability, does not dry easily, has stable effect, strong electrical conductivity, good performance, and can effectively ensure that the sound quality does not deteriorate.

The above is all that JJY has brought to you today aboutTWSThis is all about the soldering process and solder paste selection for Bluetooth headphones. For more related information, you can search for "Shenzhen JJY" to view. We will update soldering related information regularly. Welcome to follow. Thank you all!