V-Ref Adjustable 2.495V to 37V 100mA 3-Pin SOT-23 T/R
Texas Instruments
Texas Instruments - LM431BCM
$0.24 - $1.00
Texas Instruments - LM431AIMX
$0.24 - $0.44
Texas Instruments - LM431CCM3
$0.89 - * $1.00