Part Pin to Pin Compatibility Function Features Package PDF
K1242EP1 TL431

Programmable precision references.
This monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Uref to 37 with two external resistors.
The characteristics of these references make them excellents replacements for zener diodes in many applications such as digital voltmeters, power supplies, and operation amplifier circultry

Vref=2.5...37 V
I k max =100 mA
Shunt Reference Dynamic
Impedance Z ≤ 0.5 Ω
Tolerance 0.5%;1%

TO-92 SOT-23 SO-8

К142ЕР2ПИМ TL432

Programmable precision references.
This monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Uref to 16 with two external resistors.
The characteristics of these references make them excellents replacements for zener diodes in many applications such as digital voltmeters, power supplies, and operation amplifier circultry

Vref=1.24...16V
Ik max=100 mA
Shunt Reference Dynamic
Impedance Z ≤ 0.5 Ω
Tolerance 0.5%; 1%

TO-92