Before starting to weld up a quad flat package (QFP) of a printed circuit board, you will have more tools and items needed. This article describes what is necessary for the process, including security features, consumables (materials that are "consumed" during the process) and tools.
When you run a weld, the first thing to consider is safety. In particular, the protection of the eyes, ears, lungs and skin.
The first post of safety, I recommend a respirator face. You can use arespirator face at your local hardware store. There is a selection of filters you can buy for this, including dust and fumes of paint, and so on. I suggest that the filters used for agriculture, because it is a good general use smoke and chemical filters. Will help protect the lungs from welding fumes.
Another way to deal with welding fumes, with a bench-top fume extractor. It's amazing, but personally I just use a respirator facewhich is an effective and inexpensive.
Still on the subject of aviation security is important to ensure that your work is fairly well ventilated, so there is a drawing of welding smoke where you work.
Eye protection is a must at all times. If you have a head magnifying glass, will protect your eyes and give you a magnifying glass, at the same time. If you're not wearing a magnifying glass to put his head on a pair of safety glasses.
It should also protect your hearing, particularlyusing a compressor circuit during cleaning. Air compressors can be sure of a danger to hearing while still active. I like the use of earplugs foam yellow for hearing protectors. Alternatively, you can listen to the muff type hearing protection use. For extra protection, you can feel the foam earplugs and headphones at the same time to use.
To protect your skin, I recommend the use of latex gloves. Make sure the powder is free from them, in order to obtain anytalc from gloves float on your forum and soldering. You can view this gloves at the supermarket to buy. They may be marked as "powder free latex gloves for food handling.
Now we look at commodity prices. Supplies used during the procedure, as the flow, welding and cleaning solvents.
One of the secrets of making real quad flat package, and other types of SMD soldering effective use of the gel flow ", not" the movement of the liquid. Liquid Fluxnot enough solid content or violin, for this process.
It 'also important that the flow-type cleaner, which is inert and non corrosive. Do not buy the kind of water-soluble flux, because it is corrosive and can damage the board if you can not wash properly after all the welding process .
All brands of electronic brazing flux gel will do a good job, like AIM or multicore. One way to buy flood gel in a package of syringes. This is the mostconvenient way to buy. Alternatively you can buy in a bathtub and load it into a syringe for dispensing.
To clean the sheets after welding you need some methylated (also called "gas cooker") and a plastic container of some sort. The plastic container can not be a lunch, a container for food or an empty ice cream. Select the size of the container, depending on how big the circuit and what do you want to wash or weeks at a time.
AndOf course you need an attic. You can get a trajectory of tin-lead solder violin with soul from your local electronics store. Any type of wire tin-lead solder electronic is fine.
As a side note, if you want to lead free solder, then, of course, lead-free solder is used instead. Lead-free soldering process is exactly the same thing, except that the temperature of your soldering iron must be higher. You can use the gel as a flood of ordinary tin lead solder. In general, Irecommend to stay with tin-lead solder, unless you specifically need to lead-free solder for a project.
At the same time, we will discuss the tools you need.
First, only a brief note – you do not have a station of "working hot air buy." Are expensive, and you do not need one of this process. What I recommend to have a soldering iron with a touch "tank".
A tip of the reserve means that the tip of soldering iron of a hollow cavity where foodthe ceiling and stayed there through the magic of surface tension. So when you put the iron on the racing circuit, the solder flows into the cavity of bearings and pins of the chip.
The tip tank is the best form to use for this type of welding, but you can also use a regular chisel tip at the welder. Until the big chisel tip can keep a small amount of welding to the welding process.
The following program is a tool for pick-up empty. Is only a smallSuction cup with a squeeze bulb attached. You can use accessories of different sizes, Sucker, depending on the size of the component that you are improving.
You also need some sort of brush. My favorite is a horse-hair brush, a brush made especially for lines of brush. However, you can use another type of natural fiber or nylon brush. For example, a small auto parts cleaning brush, a toothbrush, or maybe a cosmetic nail brush.
Another point that Ivaluable is getting a needle. This is a needle that is normally used with a syringe for intravenous injection. This is very helpful to have one of these on hand for any problems with the knees bent quad flat package to resolve, if you have a small mistake and drop or bump your chip.
On the needle in a very useful tool for turning a clamp with a small order of 90 degrees at the end of the needle to bend a little hook or captured pin bones do.
Yousome needles at your local pharmacy. Just ask at the counter.
I recommend a compressor. Personally, I have a 1500 watt air compressor 24 liters, which I found in a hardware store for less than a hundred dollars. A compressor is a great investment for those whose work is electric. E 'useful for cleaning dishes and ingredients. It may blow away the dust and the flow characteristics of the residue.
I would also recommend the use of an in-line separator and nozzle on the compressor. Aseparator is simply a cylindrical device that connects in line with the air hose and nozzle. This separates the moisture from the air coming from the compressor for the air leaves the nozzle is relatively dry.
Finally, it is important to consider the anti-static. Antistatic treatment means to ensure that static electricity build up in our body is not emitted from a chip or a plate. There are several ways you can build an argumentin your body, take a short walk on a mat.
To avoid zapping the chip with a redundancy between the fingers or hands, you can use an antistatic wrist strap to the ground, or at least make sure you have static electricity in your body decomposes before. You can do this by touching a grounded metal object on the workbench, such as the exposed metal screw on a case grounded on the metal.
It covers all topics required for welding ofQuad Flat Pack, including security features, consumables and tools.
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