[elecena] EL817-B - zmiany ceny Transoptor; THT; Ch: 1; OUT: tranzystorowe; Uizol: 5kV; Uce: 80V; DIP4 EL817-B - 0.52 PLN https://elecena.pl/product/29392113/el817-b 2025-09-26 EL817-B - 0.53 PLN https://elecena.pl/product/29392113/el817-b 2026-02-23