Product review (3 stars): Short lived bulbs - but maybe its caused by the microwave
These light bulbs are a necessity because it is what fits my microwave.  But why would I buy six at a time?  Because they keep burning out.  Sometimes I get 12 months, sometimes 1 month.  I've learned it is best to always have a supply on hand.  I've not had this problem with previous microwaves and I've seen reviews for the same model microwave that I have complaining about these bulbs blowing.