MC7812BTG MC74HC14ADR2G MC79L12ABDR2G MC1413DR2G MC7812BDTRKG MC74HC1G14DTT1G MC7805CTG MC14070BDR2G MC34063ADR2G NTMFS5C670NLT1G NTMFS5C612NLT1G NTMFS5C628NLT1G NTMFS4C302NT1G 现货,现货,优势出