LS844 SOT-23 3L LS844 SOT-23 6L ROHS LS844 TO-71 6L LS844 TO-71 6L ROHS LS844 TO-78 6L LS844 TO-78 6L ROHS LS844-SOT-23-6L-CT LS844-SOT-23-6L-TR LS844-TO-71-6L-BK LS845 SOIC 8L