$$ h = 0.662607015\ \frac{\textrm{aW}}{\textrm{MHz}\cdot\textrm{GHz}} $$

$$ e = 160.2176634\ \frac{\textrm{aW}}{\textrm{MHz} \cdot \textrm{mV}} $$

$$ k_B = 13.80649\ \frac{\textrm{aW}}{\textrm{MHz} \cdot \textrm{K}} $$

$$ \frac{h}{k_B} = 47.99243\dots\ \frac{\textrm{mK}}{\textrm{GHz}} $$

$$ \frac{k_B}{h} = 20.83662\dots\ \frac{\textrm{GHz}}{\textrm{K}} $$

$$ \frac{h}{e} = 4.135668\dots\ \frac{\mu\textrm{V}}{\textrm{GHz}} $$

$$ \frac{e}{h} = 241.7989\dots\ \frac{\textrm{GHz}}{\textrm{mV}} $$

$$ \frac{e}{k_B} = 11.60452\dots\ \frac {\textrm{K}}{\textrm{mV}} $$

$$ \frac{k_B}{e} = 86.17333\dots\ \frac{\mu\textrm{V}}{\textrm{K}} $$