That`s not the point: planned obsolescence allows the use of poor welds because weld quality is not an issue for a design that is only supposed to be on the market for two years and break in three or four years.^ For some PCBs, I suspect the reasons for failure are due to the lower resistance to thermal cycling. Because many errors seem to be eliminated when the component is removed, the pads are cleaned with the good old solder containing lead and re-tinned and then the same component is soldered again. And he`s in a position that I believe suffers more from the heat during normal operation. So, you mean, if I used lead-free, I could feed my kids WITHOUT washing my hands (first)? Wow, it would save me a lot of time every year, thanks for the advice. Urethane protective varnishes are one way to reduce the growth of whiskers. Whiskers can grow through and out of urethane-compliant coatings, but not indoors. Connecting a protective varnish between the wires of a DIP enclosure is as bad as no protective coating at all. Overall, the environmental impact I will have for using lead solder is small compared to the amount used by manufacturers, so I`m happy. I would like silver welds to be cheaper and less susceptible to oxidation without nitrogen gas shields. Since most consumers are price sensitive. and I hate to admit that without RoHS, we would still be using Lead. Whether European regulators` intention in introducing RoHS was to completely shake up the electronics industry is a point of contention, because that`s pretty much what happened. The industry initially blocked and advanced arguments against switching to lead-free solder, some of which were chemically and electronically valid enough to obtain RoHS exemptions.
But lead-free solder, mostly tin mixed with copper and silver, has become the law of the land for most consumer electronics. Lead-free solder can contain a variety of chemical elements such as tin, silver, gold, copper, zinc, and manganese. One of the most common includes tin, silver and copper and is abbreviated SAC after the chemical symbols of tin (Sn), silver (Ag) and copper (Cu). +1 Finally a decent comment. I had to scroll through all these comments to find one that wasn`t totally ignorant. The whole mentality “I need to use lead-free at work, but only for myself at home” cries out for ignorance. If you have problems with lead-free, then you have bad equipment. No other excuse is valid. The rest of these opinions are idiotic at best. To be honest, the article itself is mostly a joke. I, too, would like to see an article dealing with the differences between solder of lead-free material versus lead and proper lead-free technique/temperature, etc. I switched to lead-free and found it harder to work with than to contain lead.
So I know I`d like the commentator to share his knowledge on the subject. The vapors should not be a quality measure because you should not inhale the vapors. Get a smoke extractor. Are you serious. I have caused occupational asthma after too many years of inhaling welding fumes for 8 hours a day. According to OSHA, this is one of the most common sources of occupation-induced asthma, and I can assure you that the cost of a smoke extractor is much lower than the cost of asthma medication. Letter (a) No. 1, L. 104-182, § 118(1), replaced “prohibition” with “prohibition” in the title and amended the text in general. Before the amendment, the text read as follows: “Any pipe, solder or flux used after 19 June 1986 during installation or repair – Only if liquid, but not necessarily marginal, For lead-based solder, the solubility of copper at the temperatures involved is quite low.
In Ag welds, copper is more soluble at a certain temperature and the temperature is higher than in Pb welds. I use 63/37 eutectic wire and paste. Why would anyone use anything else? RoHS has been a wellness reflex from the beginning. Has anyone been injured by welding in electrical waste? The organic compounds in lead can be absorbed through the skin and are bad. How would you synthesize them in a landfill? (To me, it`s like banning hydrocarbons from the air because they could form cyanide.) In the past, fifty-fifty-tin soldering was widely used because it was the most familiar and easiest to use in the plumbing trade. It offered the installer the ability to weld at low temperatures, and due to its wide melting range, it easily filled capillary spaces. Meta Title:Comparison of lead-free and lead-free solder for PCBsMeta Description:Lead solder will be phased out due to its impact on the environment and health. Learn the differences between lead solder and the benefits of lead-free soldering for your PCB products. Meta keywords:lead-free solder As you said, it`s not terribly dangerous, especially for adults, but it`s best avoided. The problem isn`t metallic lead, it`s that little remains metallic and heavy metals hang around for a while. They also bioaccumulate, causing problems for predators such as humans. The Act prohibits “the use of sanitary pipes, pipes or fittings, welds or fluxes after June 1986 for the installation or repair of (i) a public water supply system; or (ii) any pipe of a residential or non-residential establishment that provides water for human consumption that is not lead-free. Now, California has put up signs proclaiming that it is illegal to remove glass from the beach.
I apologize for my comment “no other excuse is valid”, which implies that I see the world in black and white. I`m one of the scariest viewers, but when it comes to lead-free solder, I haven`t lost a debate about how lead-free isn`t hard to make at home if done right. There`s also the attitude that forced obsolescence is a good thing. Moors Law is almost dead in the water and the only significant difference between two generations of iPhones is the software. Then you have electronics full of time bombs that inevitably explode and cripple the device, so buy another one. Hackers fix it, normal people throw it away. And it`s usually a matter of a few cents for a better game. Good decisions on the drawing board and in production lead to much less e-waste on the road. But the industry likes to choose the path of more entropy, because for some reason it is more profitable. Lead-free is good for production, but for good old manual work, I would never go lead-free. I`ve tried several times, but it`s not that pleasant.
How many tons of lead would be worth it for you? When it comes to glass on a beach, California has designated an illegal dump as an “archaeological site.” Look for Glass Beach. For decades, people took their disposable glass bottles there to throw them on the pile, where they broke and then were whirled by the waves until they ran out. When soda companies stopped reusing glass bottles, people threw more glass on the beach. The use of lead-free solder paste versus lead-free solder paste also has an impact on the quality of the final product. But again, if a PCB manufacturer implements tightly controlled soldering parameters, the effect is minimized. The PCB design layout and proper component selection will overcome many quality control issues. I inherited coils on lead solder coils from my father, and I can`t think of a scenario where I would run out and could buy more solder that would be lead-free. I use lead-free solder paste in the rare cases where I sink. Really, guys? People don`t throw things away en masse because of RoHS soldering. Other factors are at work (planned obsolescence). The fight was later supported by Ben Hencke, another lead-free fan.
He noticed Zach`s tweet and resistance to it, and instead of following his instincts, he went to literature. He wrote his findings in an interesting blog post detailing what he found when he looked at safety data sheets (SDSs) of two Kester solder, one lead-free and one lead-free. Basically, his reading is that both solders contain the same flux, hence he concludes that the toxicity of the flux is a weak argument for sticking to lead solder. For these reasons, lead solder continues to be abandoned due to its negative impact on the environment and health. However, as a product manufacturer, you want your contractors to provide high-quality components with reliable, soldered PCB connections and circuits. I love the smell of lead solder in the morning! That`s all I use. But I`ve always wondered what the lead content of the vapours is, it seems that lead doesn`t float too well. This welding therefore guarantees obsolescence.
This is of particular concern to space agencies such as NASA. See nepp.nasa.gov/WHISKER/ However, alternative welds can be used with equal success with the same equipment used for 50-50 and without the need for recycling. In fact, installers who are already familiar with these materials will find them as easy to use as 50-50.