LSK471M2V--A3535 LSK471M2W--A3550 LSK471M2WL3-3550P LSK472M1G--A2530 LSK489 SOIC 8L ROHS LSK489 SOT-23 6L ROHS LSK489 TO-71 6L ROHS LSK489A SOIC 8L ROHS LSK489A SOT-23 6L ROHS LSK489A TO-71 6L ROHS