The LM136-2.5/LM236-2.5 and LM336-2.5 integrated circuits are precision 2.5V shunt regulator diodes. These monolithic IC voltage references operate as a low-temperature-coefficient 2.5V zener with 0.2O dynamic impedance. A third terminal on the LM136-2.5 allows the reference voltage and temperature coefficient to be trimmed easily. https://elecena.pl/product/9716246/lm336bz-2-5-nopb-voltage-reference-fixed-2-5-v-to-92 2017-08-06 https://elecena.pl/product/9716246/lm336bz-2-5-nopb-voltage-reference-fixed-2-5-v-to-92 2018-05-04 https://elecena.pl/product/9716246/lm336bz-2-5-nopb-voltage-reference-fixed-2-5-v-to-92 2018-12-17 https://elecena.pl/product/9716246/lm336bz-2-5-nopb-voltage-reference-fixed-2-5-v-to-92 2019-04-02 https://elecena.pl/product/9716246/lm336bz-2-5-nopb-voltage-reference-fixed-2-5-v-to-92 2019-07-02 https://elecena.pl/product/9716246/lm336bz-2-5-nopb-voltage-reference-fixed-2-5-v-to-92 2021-05-21 https://elecena.pl/product/9716246/lm336bz-2-5-nopb-voltage-reference-fixed-2-5-v-to-92 2021-10-30 https://elecena.pl/product/9716246/lm336bz-2-5-nopb-voltage-reference-fixed-2-5-v-to-92 2022-03-17 https://elecena.pl/product/9716246/lm336bz-2-5-nopb-voltage-reference-fixed-2-5-v-to-92 2022-10-20 https://elecena.pl/product/9716246/lm336bz-2-5-nopb-voltage-reference-fixed-2-5-v-to-92 2023-02-14