Reference Voltage Diode
The LM4041 is a highly precise, two-terminal shunt mode, bandgap voltage reference that is perfect for applications where space is at a premium. Its reverse breakdown voltage is fixed at 1.225V.
LM336 2.5V Reference Voltage Diode
The LM336 is a precision 2.5V shunt regulator diode that is commonly used in Voltage reference designs. It has a dynamic Impedance of 0.2Ω with a wide operating current form 400uA to 10mA. It can also operate on high frequency upto 100Hz.