【英文标准名称】:Materialsforinterconnectionstructures-Part8:Sectionalspecificationsetfornon-conductivefilmsandcoatings-Section8:Temporarypolymercoatings
【原文标准名称】:互连结构用材料第8部分:非导电薄膜和涂层分规范集第8节:非永久高聚物涂层
【标准号】:IEC61249-8-8-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC91
【标准类型】:()
【标准水平】:()
【中文主题词】:印制电路;高聚物;分规范;互连结构;不导电的;基底材料;电气工程;电子设备及元件
【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.RequirementsforthereleaseofprintedboardsusingpeelablesoldermasksshouldbeincludedintheCustomerDetailSpecification(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】:19P.;A4
【正文语种】:英语


【英文标准名称】:Aluminiumoxideprimarilyusedfortheproductionofaluminium.Determinationofsodium.Flamespectrophotometricmethod(emission).
【原文标准名称】:铝生产用伯氧化铝.钠的测定.火焰分光光度法(发射)
【标准号】:NFT20-208-1973
【标准状态】:作废
【国别】:法国
【发布日期】:1973-10-01
【实施或试行日期】:1973-10-08
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:铝;氧化铝;化学分析和试验;火焰光度分析;化学分析;钠;含量测定;火焰光度测定法
【英文主题词】:aluminiumoxide;aluminium;emissionspectrophotometry;production;spectrophotometry;determinationofcontent;chemicalanalysisandtesting
【摘要】:
【中国标准分类号】:H41;G13
【国际标准分类号】:71_100_10
【页数】:7P;A4
【正文语种】:其他