[elecena] PD638B-U1 - zmiany ceny Transceivery światłowodowe; PD638B; EVERLIGHT; 940 nm; 2; Through Hole; Yes PD638B-U1 - 0.98 PLN https://elecena.pl/product/30344273/pd638b-u1 2026-05-31 PD638B-U1 - 0.77 PLN https://elecena.pl/product/30344273/pd638b-u1 2026-07-18