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The number one factor in a bulb blowing from what we have seen is the constant turning on and off of the bulbs. They rarely last more than a week. Part of the reason is that they are in a high temperature area with very little ventilation.
A pulse thermostat is a nightmare for this sort of thing, hence the reason for only using the dimming thermostats on such bulbs.
Having said that though i have never seen a bulb completely like shatter like you are describing.
The good thing about the ceramics is that they can be used on a pulse thermostat, and they will last something like 10,000 hours. So a blood long time. Where as a standard bulb is generally only rater for hundreds of hours to a thousand at most.
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