How To Reflow Solder With A Heat Gun
Therefore I was wondering if I can use a heat gun to carefully heat the board from the back or front until the solder paste melts at which point Id immediately stop and solder on the rest of the components by hand.
How to reflow solder with a heat gun. Often times people heat up the chip without removing it and still seem to successfully reflow. It uses an infrared lamp to heat the air and melt the solder. How to reflow a video card with a cheap heat gun - YouTube.
Ben Tilley for a decent reflow you want to be between 225 and 235 degrees Celsius for about 90 seconds. There are other solutions you could try like a toaster oven converted for soldering or a pan etc etc but if you need to do multiple a proper hot air soldering station is used. I use analog hot air stations because I dont want to turn around and look at the temperature.
Another consideration is the air stream from a heat gun is heavily laden with ions from the heating coil which can cause electrostatic discharge damage to your components regardless of whether adequate temperatures can be reached. A 6 pin WLP like that is easy relatively to solder to with some spare wire as there would be no overlapping. Before you begin soldering make sure that all the small components on your board are held down.
That said I have never used any flux foil or kapton tape. Its just these two that are a problem. The chip in question on my unit isnt the gpucpu but a smaller simpler chip.
It is important to heat the braid with the iron and let the solder in the braid heat the pins as opposed to heating the bridged pins directly. AIR GUN AUTOMATIC SLEEP FUNCTION - The hot air gun blows at 120Lmin the automatic function is a safety measure that ensures the heat is automatically cut off when the air gun is in its holder. That process should have never been called a reflow.
Im trying to do this cheap quick and hacky. The heat gun produces a lot of air that can blow these parts away. If you encounter any problem during use please feel free to contact us for help.