How To Use Hot Air Gun For Desoldering

Professional shops use expensive hot air guns or special tips shown below to heat all the joints at once. The following descriptions use that method and focus on a small section of a printed circuit board as shown below. You can also use a hot air station instead of a heat gun.

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It is very effective but at the same it is also expensive.

How to use hot air gun for desoldering. ChipQuik provides an interesting solder that when melted over existing joints produces a new low-melting point alloy under 200 F with a much longer solidification. Hot-air soldering is customarily used with surface-mount devices being attached to printed circuit boards. SMD Rework stationSMD Rework station Basically this is a high temp h air.

Saying the magic spell meltum meltum meltum move the nozzle back and forth until the solder begins to flow the solder should appear shiney and molten. Then carefully removereposition the part you want to rework using tweezers by nudging or grabbing the part. A specialized board preheater can be used or it can be improvised for example with a coffee cup heater.

Another benefit of using a hot-air rework station is that it doubles as a soldering station which is to say that you desolder say a resistor and then solder on a new resistor immediately saving you time in the process. Using a Heat Gun. You can change its functionality by the push of a button.

Preparation of skis. The top photo shows a board that has been populated and reflow soldered in an oven and the bottom photo shows the bare board. There are fortunately a few cheap ways to desolder surface mount chips.

Desoldering Gun Desoldering Gun This tool will make life a lot ea sier when you need to rework a previous solder job. For removing larger parts preheating of the board is advised. Prepare the desoldering gun by plugging it in turning it on and setting the desired temperature.

So the technique is to heat it up fast remove the part and hot-air gun then put the part where it can cool off. If you dont have one of those though heres how you can use a heat gun to desolder components. Intelligent cooling system deferred air delivery when unit is off auto power off when temperature drops below 100 Celsius.