Hot bar reflow soldering is used in making flex circuits. These circuits are used in a wide range of products. The size and shape of many electronics have changed over the years. Manufacturers use flex circuits to keep the size small. Many products are becoming digital and more people want to connect to their electronic devices using their mobile phones. The circuitry used in devices these days is delicate and allows one to remotely access it. Chips are used to store memory in devices and all the components are very fragile.
Hot bar reflow soldering process is used in making digital cameras, cell phones, calculators, printers, disk drives, LCD TVs and automotive assemblies. This type of soldering is used for attaching flex circuits to printed circuit boards (PCBs), ceramics and glass. The process is also called as pulsed-heat bonding and is also used for soldering battery packs, surface-mount edge connectors, ribbon cables and small coaxial cables to PCBs.
The global market for flex circuits is booming. It has increased more than 250 percent in the past decade. Flexible printed circuits are therefore a very fast growth technology. These circuits reduce the cost of electrical interconnections by as much as 65%. The need for cabling and wiring is also reduced by 70%. This all adds up to profits for the manufacturer. The market is going to expand in the coming years as more industries will make benefit of the technology. The military, medical systems, avionics systems and satellites all use the flexible printed circuits.
Parts that are sensitive to heat such as camera chips or LEDs can be soldered using this type of soldering. A titanium thermode that is mounted to a pneumatic cylinder and connected to a power supply solders two parts together. Thermodes are custom-made to suit the size of the parts and these can be changed as required. The thermode makes contact with the surface that needs to be bonded and heats it up. Within 2 second the thermodes reach the peak flow temperatures. Peak temperatures vary when the lead is exposed. To save on the cost of the soldering project, you can outsource the work to another company that has the experience.
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