NTE2938 LS841 TO-71 6L UF3N170400B7S LS5911 SOT-23 3L NTE460 LS844 SOIC 8L 2N3955A LS843 SOIC 8L NTE2910 LSJ74A SOT-89 3L NTE456 LS843 PDIP 8L NTE452 LS840 SOIC 8L NTE459 LS842 TO-71 6L NTE461 LS840 TO-78 6L 3N206 LS320 TO-72 4L