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Although solder paste typically contains around 90% metal in solids by weight, the volume of the soldered joint is only about half that of the solder paste applied. [7] This is due to the presence of flux and other non-metallic agents in the paste, and the lower density of the metal particles when suspended in the paste as compared to the final ...
Wave soldering is used for both through-hole printed circuit assemblies, and surface mount. In the latter case, the components are glued onto the surface of a printed circuit board (PCB) by placement equipment, before being run through the molten solder wave. Wave soldering is mainly used in soldering of through hole components.
No-clean fluxes – mild enough to not "require" removal due to their non-conductive and non-corrosive residues. [8] These fluxes are called "no-clean" because the residue left after the solder operation is non-conductive and will not cause electrical shorts; nevertheless they leave a plainly visible white residue.
Proper cleaning removes all traces of solder flux, as well as dirt and other contaminants that may be invisible to the naked eye. No-Clean or other soldering processes may leave "white residues" that, according to IPC, are acceptable "provided that these residues have been qualified and documented as benign". [10]
Consumer Reports is a United States-based non-profit organization which conducts product testing and product research to collect information to share with consumers so that they can make more informed purchase decisions in any marketplace.
Consumer Reports states that PriceGrabber places the ads and pays a percentage of referral fees to CR, [25] who has no direct relationship with the retailers. [26] Consumer Reports publishes reviews of its business partner and recommends it in at least one case. [27]
An explosion at a chemical facility in Louisville, Kentucky Tuesday afternoon left at least 11 people hospitalized, officials confirmed.. The blast occurred around 3 p.m. local time at the ...
Soldering copper pipes using a propane torch and a lead-free solder. Solder is a metallic material that is used to connect metal workpieces. The choice of specific solder alloys depends on their melting point, chemical reactivity, mechanical properties, toxicity, and other properties.