网上流传比较疯狂的mark,smd资料:THE SMD CODEBOOKTHE SMD CODEBOOKSMD Codes.SMD devices are,by their very nature,too small to carry conventional semiconductor type numbers.Instead,a somewhat arbitrary coding system has grown up,wherethe device package carries a simple two-or three-character ID code.Identifying the manufacturers'type number of an SMD device fromthe package code can be a difficult task,involving combing throughmany different databooks.This HTML book is designed to provide an easy means of deviceidentification.It lists well over3,400device codes in alphabeticalorder,together with type numbers,device characteristics orequivalents and pinout information.How to use the SMD CodebookTo identify a particular SMD devic