Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [hot-air]

32 questions
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5 answers

Safe temperature for desoldering SMD components w/ hot-air rework gun?

What is a reasonably safe temperature to use for desoldering SMD components using a hot-air rework gun? I have a new-to-me rework station from Xytronic and the documentation clearly assumes you know what you're doing… It tells you what temperature…
Kaelin Colclasure
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6 answers

Hot Air Gun for Reflowing a Board?

I'm curious how well a hot air gun would work for reflowing an entire board. My circuit board has about 250 components (including 0402 passives, and a couple of 0.5mm pitch TQFPs) and it's a bit of a pain to assemble it using a soldering…
Saad
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4 answers

What is a good lab surface to hot-air rework on?

I have been scouring the internet for information regarding what would be a good surface to do hot air rework on. Right now, my lab, if you want to call it that, is a wooden bench with cardboard surface...not the greatest. I recently got a hot air…
Funkyguy
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Potential pitfalls/caveats for developing a stencil for solder reflow

I'm developing a project that requires ICs that are in a QFN package, some have a slug on the bottom of the IC. Since these are QFNs, I'm not interested in hand soldering these; so I'm leaning toward using the toaster oven method to solder the…
Nick Williams
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1 answer

Hot air lead-free BGA reflow

I'm experimenting with trying to reflow a 0.8mm BGA myself for prototypes/repairs. I've solved the main problem: alignment. I've used my 3D printer to print custom board guides that align on large through-hole pads and guide the BGAs into place. So…
darron
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4
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1 answer

A good technique for removing 50-pin SMD CF/MD card slot with Hot air

I have a piece of equipment that has a CF/MD card on it. Somebody tried to force the card in and broke 2 pins off. I managed to replace the two pins temporarily, but it was kind of a hack job, but it works for now. What I want to do is order a…
renosis
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1 answer

SMD Removal Process

I'm practicing my SMD soldering skills and done my research on how to remove SMD devices from a PCB motherboard and brought a T8280 PREHEATING STATION and 852D SMD station. I understand you have to preheat the motherboard to around 120C-150C and use…
user46152
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2 answers

Is hot air only meant for desoldering?

The question is simple. I only ever seem to find a soldering-related hot air gun on a machine dubbed a “rework station” and the only reference I can find to using hot air to solder SMD components is on a few YouTube videos. Is a hot air gun on a…
Adam Sperry
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2 answers

Is it safe to use hot air on SMD LEDs?

I usually use hot air gun to solder components on the PCB. However I am afraid of using hot air on SMD LED - they have that clear plastic on top and i am afraid of melting it with hot air, so I usually used two solder irons to place SMD LEDs on the…
Alex Zarenin
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3 answers

How are surface-mount parts held in place for hot air soldering?

I've found myself having to solder a bunch of XGL6060 and XGL4040 inductors lately, which have to be reflowed as there's no way to get a soldering iron to the pads underneath the chips. I don't have a reflow oven, but I do have a hot air rework…
Hearth
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4 answers

Need recommendation for a first hot air station

I have a pretty nice soldering station, but now that I am finding the need to work with non-DIP type packages unpreventable, I am beginning to think that purchasing a hot air station would be a good idea. I know shopping questions are not allowed…
capcom
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2 answers

LGA parts and hot air soldering

Does the solder pattern on these huge pads indicate what might be going on ? The parts would not work about 80% - 90% of the time. I am trying to follow the ramp_up-soak-reflow-ramp_down curve to the best of my ability. Using a standard 2-speeds…
kellogs
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2 answers

Hot air rework temperature to avoid solder melt on opposite end

When removing/replacing chips. Is it safer to use little to no air flow but higher temp heat or lower heat with more airflow? My hot air station is a model 852d+ with a max temp setting of 500c and max airflow temp of 8. I was testing melting a…
ohmmy
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1 answer

Are "ionizing" hair dryers any different from the regular ones?

I've been shopping for hair dryers and in all malls I've been to the salespeople explained how the "ionizing" hair dryers are better than the ones without that function, because it makes your hair less frizzy. I have been able to talk four of about…
user1306322
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Solder through-hole or surface-mount components first?

I am new to surface mount soldering. On a board with both SMT and through-hole parts (header pins), which parts should I solder on first? I imagine the technique I use for SMT soldering is important. I have access to an oven and a heat gun - baking…
Aralox
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