As thermonuclear weapons represent the most efficient design for weapon energy yield in weapons with yields above 50 kilotons of TNT (210 TJ), virtually all the nuclear weapons of this size deployed by the five nuclear-weapon states under the Non-Proliferation Treaty today are thermonuclear weapons using the Teller–Ulam design.
Da termonukleare våben repræsenterer det mest effektive design for energiafkast i våben med afkast over 50 kilotons of TNT (210 TJ), er næsten alle kernevåben i anvendelse i de fem atommagter under NPT i dag termonukleare våben, der gør brug af Teller–Ulam-designet.