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If your boards contain high-impedance analog circuits, then the conductivity of the flux is a real concern. Leakage current through flux is a. What is the conductivity of solder flux, before or after soldering? I want to know if a short could form due to excess flux between two hand-soldered connections.
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I just got in a pound of 63/37 kester" solder from mouser and used on it a few amps, of which none worked. Ive never had this problem.
Joined: Jan 2, This technique was formerly used to repair small damages on aluminium aircraft skins. Quote: ill take your advice Demolition and search MG. Mechanical rubbing of a heated surface with molten solder can be used for coating the surface.
This article includes a list of referencesbut its sources remain unclear because it has insufficient inline citations. Fluxes for high-temperature soldering differ from the fluxes for use at lower temperatures. The role of the activators is primarily disruption and removal of the oxide layer on the metal surface and also the molten solderto facilitate direct contact between the molten solder and metal.
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|Even subtler, the flux changes the dielectric constant between two solder points, thus changing the parasitic capacitance.
Archived from the original PDF on October 10, Quote: The last time I checked it was about February Learn how and when to remove this template message. Fluxes for indium and zinc based solders have different compositions than fluxes for ordinary tin-lead and tin-based solders, due to different soldering temperatures and different chemistry of the oxides involved.
At high temperature applied for long time, the zinc diffuses away from the joint.
decrease of the influence of the thermal gradient in the energy flux equation mainly affects the saturated region.
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equations the temperature dependence of the thermal conductivity of the semiconductor is qatsi X +ITs. (). 2c~,j. 2E,j ).
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Quote: Which type? Refer to the article Flux for more detail.
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Improper cleaning can actually aggravate the corrosion by releasing trapped activators from the flux residues. So my question A related use of flux is to designate the material added to the contents of a smelting furnace or a cupola for the purpose of purging the metal of impurities, and of rendering the slag more liquid.
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|I wouldn't imagine it would be. From Wikipedia, the free encyclopedia.
Fluxes for brazing operate at significantly higher temperatures and are therefore mostly inorganic; the organic compounds tend to be of supplementary nature, e. Various tests, including the ROSE testmay be used after soldering to check for the presence of ionic or other contaminants that could cause short circuits or other problems.
Using the thermal resistance, along with temperature measurements on either side of the material, heat flux can then be indirectly calculated. Thanks -ivan.