WhileweareconductingSMTDuringsurfacemounttechnology(SMT)processing,leadedsolderpasteorlead-freehigh-temperaturesolderpasteisusuallyused.Forcardboardboards,weusemedium-temperaturesolderpaste,andforLEDAluminumsubstrateplate,highpowerLEDThenlow-temperaturesolderpasteisrequired,andT5T8Fluorescentlampsrequiremorehigh-temperaturesolderpasteandlessmedium-temperaturesolderpaste.ForLEDSoftboardsheetMPCForboards,high-temperaturesolderpasteisgenerallyonlyusedinsteadofmediumandlow-temperaturesolderpaste,asmediumandlow-temperaturesolderpasteispronetocausecomponentdroppingproblems.Asforscattering......
Friendswhohaveusedsolderingallknowthatlead-freesolderpastehashighandlowtemperatures.Lead-freehigh-temperaturesolderpasteisundoubtedlyusedathightemperatures.Thedifferencebetweenhigh-temperaturelead-freesolderpasteandlow-temperaturelead-freesolderpasteliesintheirmeltingpoints.Lead-freehigh-temperaturesolderpasteiscomposedoftin,silverandcopper.Atlowtemperatures,itistinandbismuth,anditslow-temperaturemeltingpointis139Hightemperature217.Therefore,ifitisnecessarytodistinguishbetweenthesetwofurnacetemperatures,bothtypesofsolderpastescanbepassedthroughthefurnace,andthetemperaturecurveofthereflowsolderingcanbesettolow-temperaturesolderpaste.Ifoneofthemfallsheavilybehindthefurnace......
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