[elecena] DC converter, 3.3 VDC, 1 W, 1 output, 5 VDC, 79 % efficiency, ROE-3.305S - zmiany ceny DC converter, 3.3 VDC, 1 W, 1 output, 5 VDC, 79 % efficiency, ROE-3.305S - 4.02 EUR https://elecena.pl/product/29683817/dc-converter-3-3-vdc-1-w-1-output-5-vdc-79-efficiency-roe-3-305s 2026-01-12 DC converter, 3.3 VDC, 1 W, 1 output, 5 VDC, 79 % efficiency, ROE-3.305S - 3.68 EUR https://elecena.pl/product/29683817/dc-converter-3-3-vdc-1-w-1-output-5-vdc-79-efficiency-roe-3-305s 2026-04-25