Crosby valvePCB via current calculatorAltium designer thermal ReliefCrosby J-Seriesthermal relief中文Thermal relief padThermal relief valveThermal relief - Wikipedia
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A thermal relief pad, thermal pad or simply thermal, is a printed circuit board (PCB) pad connected to a copper pour using a thermal connection. Thermalrelief FromWikipedia,thefreeencyclopedia Jumptonavigation Jumptosearch Forotheruses,seeThermalpad(disambiguation). Thisarticleneedsadditionalcitationsforverification.Pleasehelpimprovethisarticlebyaddingcitationstoreliablesources.Unsourcedmaterialmaybechallengedandremoved.Findsources: "Thermalrelief" – news ·newspapers ·books ·scholar ·JSTOR(May2011)(Learnhowandwhentoremovethistemplatemessage) Thermalpadscanbeseeninseverallocationsonthisprintedcircuitboard(PCB),inparticular,thebottompadofthethreeverticalpadsinthetopleftcorner. Athermalreliefpad,thermalpadorsimplythermal,isaprintedcircuitboard(PCB)padconnectedtoacopperpourusingathermalconnection.Itlookslikeanormalpadwithcopper"spokes"connectingittothesurroundingcopper. Atypicalpadonaprintedcircuitboardisonlyconnectedtoafewnarrowtracks.Apaddirectlyconnectedtothecopperpourisdifficulttosolder,sincetheheatquicklyleaksawayfromthepadintothecopperpourduetohighthermalconductivityofcopper.Athermalconnectionrestrictstheheatflow,makingthepadeasiertosolder. Viaholesthatonlyconnectonelayertoanother,withouthavingsolderingwiresorpinsintothehole,donotnormallyneedthermalrestriction. Wire-leadedcomponentsmayrequirethethermalreliefpatterntobecustomizedorevenomittedwhencarryingradio-frequencycurrents(wheretheadditionalinductancewouldbeproblematic),orwhereveryhighcurrentdensitiesareexpected(wherethespokesofthethermalreliefmayactasafuse).Inthesecasesthepartsmayrequireadditionalhandsolderingduringassembly. Seealso[edit] Heattrap Thermalbarrier References[edit] Furtherreading[edit] "Section9.1.3:ThermalReliefinConductorPlanes".IPC-2221A:GenericStandardonPrintedBoardDesign.IPC.2003. Brooks,Doug(December1998).FusingCurrent–WhenTracesMeltWithoutaTrace.MillerFreemanInc.(availableUltraCADwebsite). Thiselectronics-relatedarticleisastub.YoucanhelpWikipediabyexpandingit.vte Retrievedfrom"https://en.wikipedia.org/w/index.php?title=Thermal_relief&oldid=1086105321" Categories:ElectricalconnectorsElectronicsstubsHiddencategories:ArticlesneedingadditionalreferencesfromMay2011AllarticlesneedingadditionalreferencesAllstubarticles Navigationmenu Personaltools NotloggedinTalkContributionsCreateaccountLogin Namespaces ArticleTalk English Views ReadEditViewhistory More Search Navigation MainpageContentsCurrenteventsRandomarticleAboutWikipediaContactusDonate Contribute HelpLearntoeditCommunityportalRecentchangesUploadfile Tools WhatlinkshereRelatedchangesUploadfileSpecialpagesPermanentlinkPageinformationCitethispageWikidataitem Print/export DownloadasPDFPrintableversion Languages Deutsch Editlinks
延伸文章資訊
- 1The Importance of Thermal Relief in Circuit Design and PCBA ...
Thermal relief for a PCB comes in the form of a thermal relief pad or thermal pad. These thermal ...
- 2PCB Thermal Relief Guidelines for Effective Layouts
Thermal reliefs are the spoked connections from a thru-hole or surface mount pad to an area fill ...
- 3設計Thermal Relief pad(熱阻焊墊/限熱焊墊)降低焊接不良
【Thermal Relief】在對岸大陸被稱為【花焊盤】或【熱風焊盤】或【熱焊盤】，因為大部分的thermal relief 都會將焊墊與銅箔的接觸點設計成「十」字形，來達到平均並減少與 ...
- 4How To Design Thermal Reliefs | Tempo Automation
A thermally relieved pad is an SMT pad with the copper around it removed (“relieved”) except for ...
- 5A demystifying study of thermal relief pads - IEEE Xplore
Abstract: Thermal relief is a technique used by printed circuit board (PCB) designers to thermall...
