Adjustable precision shunt regulators ±1% 2.495 - 36V 1-100mA SOT23. Cross Reference: 431 AA AB AA18F AA1BF AA7 AA7UG AS431 BA BB CDW_43 EA1 R1A TL431 TL431A TL431AS TL431ASA-7 TL431AW5 TL431BSA TL431BW5 TL431S TL431DS.
