How many cycles can a piezio Electric Ignitor handle before failing?
Depends, how well its mechanic is made.
The same crystals (or better to say the piezo ceramic slugs, they are usually some form of polycrystalline ceramic) alone are used for applications with 1+M cycles as generators (transfer mechanical movement into electricity) and with 1+G cycle life as actuators (transform an electrical pulse into mechanical movement), but the consumer stove/grill/lighter ignitors have just too flimsy mechanical design, which is in many cases overloading the crystals with uneven pressure, uncontrolled shocks and so on, so either the mechanics itself wears or the crystal breaks after just few 100's cycles....
