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I bought the 858D hot air gun, which can easily remove multi-pin devices that cannot be removed by a soldering iron.

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Hot Air Guns

The 858D is a hot air gun with a thinner tip than a heat gun and temperature control.

AliExpress.com Product – JCD Hot air gun 858D 2 in 1 soldering station 700W 110V 220V BGA Rework SMD SMT welding repair tool Heat gun LED Digital Solder

It is also sold on Amazon.

I bought a 110V spec one from Aliexpress.

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Opened

It arrived from China in this condition.

When opened, the empty space is filled with bubble wrap.

Contains the main body, heat gun, nozzle, and power cable.

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Temperature test

The temperature of the hot air can be set at the touch of a button. This time I set it to 340 degrees, about the same as the soldering iron. In addition to the temperature, the air volume can be adjusted with a knob.

I measured the temperature with a thermocouple thermometer and it was roughly 340 degrees. That’s fine.

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Remove the multi-pin device

Try removing the Nixie tube, which has 13 leads, from the board. Since it is a double-sided through-hole, it is quite difficult to use a soldering iron and solder sucking wire.

I’ve soldered it with lead-free solder, so I’ll try to melt the solder at the 340 degrees I just tested.

The pads are arranged in a circle and heated with hot air in a circular motion. After warming it up for a while, the solder melts and turns into a metallic color.

I moved the nixie tube back and forth and left and right, and was able to pull it out successfully. It is absolutely impossible to remove the parts with a soldering iron, but by using a hot air gun, I was able to remove them successfully.

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Automatic cooling

The stand on which the heat gun is placed has a built-in sensor. The system automatically detects if the heat gun is on the stand, and when the heat gun is lifted from the stand, hot air is blown out. When you put the heat gun back on the table again, it goes into blast mode for cooling. And when the temperature falls below 100℃, the airflow stops.

The “—” indicates that cooling has been completed and the airflow has stopped.

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This is useful one

Unlike a heat gun, which heats up a large area, it can be heated locally, which may be useful for removing parts.

You can also set the temperature, which reduces the risk of overheating.

I bought a pretty good one. I’ll be using this in the future when removing parts.

AliExpress.com Product – JCD Hot air gun 858D 2 in 1 soldering station 700W 110V 220V BGA Rework SMD SMT welding repair tool Heat gun LED Digital Solder

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