Single miniature part with zener diodes in series
There are integrated port protection networks that may do what you want in one or two packages.
You'll have to evaluate the breakdown voltages and tolerances to see if they meet all your (unstated) requirements. Generally the &quot;zener&quot; is a TVS which is like a Zener diode, but beefier.
Eg. (from a Wurth datasheet): (there are many others, and some variations in topology).