Ano, mate pravdu, diky za doplneni. Jen kratka citace z odkazovaneho clanku:
"Older, vacuum tube (valve) based equipment is generally much less vulnerable to EMP than newer solid state equipment. Soviet Cold War–era military aircraft often had avionics based on vacuum tubes due both to limitations in Soviet solid-state capabilities and a belief that the vacuum-tube gear would survive better."
O pouziti elektronek v sovetskem letadlu, ktere bylo nuceno nouzove pristat v Japonsku, se take hodne povidalo (kolik je z toho pravda, tezko posoudi) - americani, kteri letadlo samozrejme pred oficialnim vracenim rozebrali, nemohli pochopit, proc jsou tam elektronky namisto polovodicu a bylo to mj. take kvuli zpozdeni v zavadeni teto technologie v RVHP.