UPC311G2-E2+ UPC311G2-E2=LM311 UPC311G2-E2-A UPC311G2-E2-A/JM(L) UPC311G2-E3 UPC311G2-F2(HS) UPC311G2-T1 UPC311G2-T2 UPC311G2T2A UPC311G2-X