LM1086ISX-ADJ/NOPB LM1086IT-1.8 LM1086IT-1.8/NOPB LM1086IT-12 LM1086IT-2.5 LM1086IT-2.5/NOPB LM1086IT-2.85 LM1086IT-2.85/NOPB LM1086IT-3.3 LM1086IT-3.3 稳压(齐纳)二极管