[elecena] TL431 2,5-36V REF. - zmiany ceny TL431 2,5-36V REF. - 2.23 PLN https://elecena.pl/product/17270092/tl431-2-5-36v-ref 2020-10-31 TL431 2,5-36V REF. - 2.40 PLN https://elecena.pl/product/17270092/tl431-2-5-36v-ref 2021-02-11