BS EN 61249-8-8-1997 连接结构用材料.非导电膜和涂层分规范.临时聚合物规范

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【英文标准名称】:Materialsforinterconnectionstructures-Sectionalspecificationsetfornon-conductivefilmsandcoatings-Temporarypolymercoatings
【原文标准名称】:连接结构用材料.非导电膜和涂层分规范.临时聚合物规范
【标准号】:BSEN61249-8-8-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-12-15
【实施或试行日期】:1997-12-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:温度冲击试验;软钎焊性试验;印制电路;印制电路基板;剥离试验;印制电路板;附着力试验;膜(物态);接触电阻;耐化学性试验;覆层;作标记;临时的;耐溶剂试验;高聚物
【英文主题词】:Basematerials;Coatings;Electricalengineering;Electronicequipmentandcomponents;Evaluations;Films;Interconnectionstructures;Materials;Nonconducting;Polymers;Printedcircuits;Quality;Sectionalspecification;Specification(approval)
【摘要】:ThisspecificationwithintheIEC61249seriesdetailsrequirementsforthequalificationoftemporarysolderresistcoatings.Thesehavebeenreferredtoasamaskinthisspecificationsincetheyhavethefacilityofbeingreadilyremoved.Peelablesoldermasksareapplied(usuallybyscreenprinting)toareasofacompletedprintedboardorpanelpriortoshipment,inordertoprotectareasoftheboardorpanelduringsubsequentprocessesbytheboardassembler.Typically,peelablesoldermasksareusedtoprotectkeypadcontactsduringfluxingandsubsequentmasssoldering.Removalofthemaskwillthenleavearesidue-freeuntinnedcontactarea.Requirementsstatedinthisspecificationwillalsohavesomelimitedvalidityforassessingthesuitabilityofprintedboardswhicharesuppliedwithpeelablesoldermasks.RequirementsforthereleaseofprintedboardsusingpeelabiesoldermasksshouldbeincludedintheCustomerDetailSpecification(CDS).RequirementsforthequalificationofpermanentpolymericsolderresistivecoatingsaregiveninIEC61249-8-5,whichhasbeenusedasatemplateinconstructingthisspecification,inasfarasitmayapply.note:1)Tobepublished
【中国标准分类号】:L30
【国际标准分类号】:31_180
【页数】:16P.;A4
【正文语种】:英语