[elecena] 1N2840B - zmiany ceny Dioda: Zenera; 50W; 110V; 10uA; Ufmax: 1,5V 1N2840B - 380.83 PLN https://elecena.pl/product/30332623/1n2840b 2026-05-30 1N2840B - 375.32 PLN https://elecena.pl/product/30332623/1n2840b 2026-06-10 1N2840B - 388.93 PLN https://elecena.pl/product/30332623/1n2840b 2026-07-26 1N2840B - 380.83 PLN https://elecena.pl/product/30332623/1n2840b 2026-08-30 1N2840B - 379.74 PLN https://elecena.pl/product/30332623/1n2840b 2026-09-11