《贴片标号查询》word版

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1、THESMDCODEBOOKSMDCodes.SMDdevicesare,bytheirverynature,toosmalltocarryconventionalsemiconductortypenumbers.Instead,asomewhatarbitrarycodingsystemhasgrownup,wherethedevicepackagecarriesasimpletwo-orthree-characterIDcode.Identifyingthemanufacturers'typenumberofanSMDdevicefromthepackagecodecanbe

2、adifficulttask,involvingcombingthroughmanydifferentdatabooks.ThisHTMLbookisdesignedtoprovideaneasymeansofdeviceidentification.Itlistswellover3,400devicecodesinalphabeticalorder,togetherwithtypenumbers,devicecharacteristicsorequivalentsandpinoutinformation.HowtousetheSMDCodebookToidentifyapart

3、icularSMDdevice,firstidentifythepackagestyleandnotetheIDcodeprintedonthedevice.Nowlookupthecodeinthealphanumericlistingwhichformsthemainpartofthisbookbyclickingonthefirstcharactershownintheleft-menu.Unfortunately,eachdevicecodeisnotnecessarilyunique.Forexampleadevicecoded1AmightbeeitheraBC846

4、AoraFMMT3904.Eventhesamemanufacturermayusethesamecodefordifferentdevices!Ifthereismorethanoneentry,usethepackagestyletodifferentiatebetweendeviceswiththesameIDcode.ThiscompilationhasbeencollectedfromRPBlackwellG4PMK,manufacturers'dataandothersourcesofSMDdeviceIDcodes,pinoutandleadeddeviceequi

5、valentinformation.TheentriesundertheManufacturercolumnarenotintendedtobecomprehensive;rathertheyareintendedtoprovidehelponlocatingsourcesofmoredetailedinformationifyourequireit. IDCodeVariationsManymanufacturersuseanextraletterastheirownidentificationcode.IfthedeviceisfromPhilipsitwillsometim

6、eshavealowercase'p'(orsometimes't')addedtothecode;Siemensdevicesusuallyhavealowercase's'.Forexample,ifthecodeis1A,accordingtothetablethereareanumberofpossibilities:·1ABC846APhiITTNBC546A·1AFMMT3904ZetN2N3904·1AMMBT3904MotN2N3904·1AIRLML2402IRFn-chmosfet20V0.9AThishasbeenaprobleminthepast,howe

7、verrecentlymanufacturershavebeenaddinglowercaseletterswhichclarifythecode.ManyrecentMotoroladeviceshaveasmallsuperscriptletterafterthedevicecode,suchasSAC.(Thissmallerletterismerelyamonthofmanufacturecode.)ManydevicesfromRohmSemiconductorswhi