pcb專有名詞解釋-資料下載頁
2025-01-01 01:57本頁面
【正文】 essotherwisespecifiedontheengineeringdrawing,platedthroughviaholeswithanominalsizeof or less may be partially or pletelypluggedwithsolder.? ? 3.Asapreventiveprecaution.beforethelayingdownofthesolder,thePCB’Swillhavetobewashedtoremovetheresidualsduetotheproductionprocess,theclearingdegreeofthePCB’SbeforethecoatinghastobethefollowingoneMAX1ug/squarecm..1.Soldermask(SMOBC)ApplyLPIsoldermasksperIPCSM840typeB.class3.colorgreenandminimumsoldermasksthicknessovertheedgesshallbe”.LPIsoldermaskandsoldershallmeettheUL94vorequirements.ThereshallbenosoldermasksovertheSMTpads,thereshallbenoexposedtracesonoutsidelayersandsoldermaskopeningshouldbe”sidelargerthanpad.2.PCB“StackUp”constructionrequirementsaretobedeterminedbythePCBvendorunlessspecified.Leitchwillsupply the overall nominal PCB thickness, and all otherassociated functional requirements. A Certificate ofCompliance is required for all PCB’s, where Leitch hasspecifiedspecificfunctionalrequirements.(.Impedancespecifications,etc..)謝謝觀看 /歡迎下載BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAI
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