Use car halogen bulb as Infrared desolder tool? - Page 1
Forum section: electronics / testgear

author: cybermaus
author_rank: Frequent Contributor
timestamp: December 15, 2017, 04:19:18 am
content: I came across this. While I do have a hot air station, this looks interesting.Though I would use proper light shade welding goggles rather then the advised sunglasses.

author: IanB
author_rank: Super Contributor
timestamp: December 15, 2017, 04:32:40 am
content: I would probably work.Once when I was a kid I wired up ten 24 V 250 W halogen lamps in series as a cluster and plugged them into the mains to see how bright my super lamp would be. Within a few seconds the radiated heat began setting fire to flammable materials nearby and I had to very quickly unplug the power.And of course stove tops can have halogen heating rings.

author: cybermaus
author_rank: Frequent Contributor
timestamp: December 15, 2017, 05:06:24 am
content: There is a whole string of people experimenting with this:https://www.google.com/search?q=halogen+bulb+to+desolder&rlz=1C1CHNY_enNL660NL660&oq=halogen+bulb+to+desolder&aqs=chrome..69i57j69i60l2.4494j0j7&sourceid=chrome&ie=UTF-8(must have missed the hackaday one, I usually follow that)

author: montemcguire
author_rank: Regular Contributor
timestamp: December 15, 2017, 09:30:15 am
content: Quote from: cybermaus on December 15, 2017, 04:19:18 amInfrared pre-heat underneath the PCB makes hot air work a lot better, so it's not redundant at all. I have a pricey Hakko IR preheat device, and it comes with a nice enclosure that prevents random fires and such, but I bet some sort of thing could be rigged up with sheet aluminum and halogen bulbs that would be equivalent. The Hakko has a thermocouple and a controller to provide a temperature ramp, but that too could be rigged up as well. Interesting concept!

author: james_s
author_rank: Super Contributor
timestamp: December 15, 2017, 10:05:46 pm
content: Incandescent lamps of all types are very efficient at converting electricity into heat so I'm not surprised this works. You will probably want some kind of housing and reflector though to keep the heat from melting/burning other things.

author: Diabolo
author_rank: Regular Contributor
timestamp: December 16, 2017, 02:38:13 am
content: Hello,Unless I'm mistaken, many devices use the heat of halogen lamps as heating, for example: laser printers, some electric ovens, etc...Diabolo

author: texaspyro
author_rank: Super Contributor
timestamp: December 16, 2017, 03:23:45 am
content: IR reflow can have a lot of problems. The black plastic IC package absorbs a lot of heat, but the leads and solder reflect it. You can wind up cooking the chip before the solder flows. Also different packages and components behave differently. It's hard to get consistent results across a board. I know several people that have those small IR ovens from China and they all seem to regret buying them.

author: floobydust
author_rank: Super Contributor
timestamp: December 16, 2017, 04:07:42 am
content: From thermodynamics, there are three methods of heat transfer - conduction, convection, radiation. As an EE, always remember this.IR is radiation only, so not ideal, and poor n reflective surfaces.

author: texaspyro
author_rank: Super Contributor
timestamp: December 16, 2017, 04:32:01 am
content: Quote from: floobydust on December 16, 2017, 04:07:42 amYou forgot the fourth method... frustration.