贴片电子元件代码(丝印)查询

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

2、ecodecanbeadifficulttask,involvingcombingthroughmanydifferentdatabooks.ThisHTMLbookisdesignedtoprovideaneasymeansofdeviceidentification.Itlistswellover3,400devicecodesinalphabeticalorder,togetherwithtypenumbers,devicecharacteristicsorequivalentsandpinoutinformation.HowtousetheSMDCod

3、ebookToidentifyaparticularSMDdevice,firstidentifythepackagestyleandnotetheIDcodeprintedonthedevice.Nowlookupthecodeinthealphanumericlistingwhichformsthemainpartofthisbookbyclickingonthefirstcharactershownintheleft-menu.Unfortunately,eachdevicecodeisnotnecessarilyunique.Forexampleade

4、vicecoded1AmightbeeitheraBC846AoraFMMT3904.Eventhesamemanufacturermayusethesamecodefordifferentdevices!Ifthereismorethanoneentry,usethepackagestyletodifferentiatebetweendeviceswiththesameIDcode.ThiscompilationhasbeencollectedfromRPBlackwellG4PMK,manufacturers'dataandothersourcesofSM

5、DdeviceIDcodes,pinoutandleadeddeviceequivalentinformation.TheentriesundertheManufacturercolumnarenotintendedtobecomprehensive;rathertheyareintendedtoprovidehelponlocatingsourcesofmoredetailedinformationifyourequireit.IDCodeVariationsManymanufacturersuseanextraletterastheirownidentif

6、icationcode.IfthedeviceisfromPhilipsitwillsometimeshavealowercase'p'(orsometimes't')addedtothecode;Siemensdevicesusuallyhavealowercase's'.Forexample,ifthecodeis1A,accordingtothetablethereareanumberofpossibilities:·1ABC846APhiITTNBC546A·1AFMMT3904ZetN2N3904·1AMMBT3904MotN2N3904·1AIRL

7、ML2402IRFn-chmosfet20V0.9AThishasbeenaprobleminthepast,howeverrecentlymanufacturershavebeenaddinglowercaseletterswhichclarifythecode.CManyrecentMotoroladeviceshaveasmallsuperscriptletterafterthedevicecode,suchasSA.(Thissmallerletterismerelyamonthofmanufacturecode.)ManydevicesfromRoh

8、mSemiconductorswhic