Product review (5 stars): This bulb works great
We sometimes leave our microwave over door open to allow moisture to evaporate and to serve as a night light.  We missed it when the old bulb burned out.  But we've had this new bulb installed for months now, and it works fine.  A few months tells me nothing about the bulb's longevity, but so far so good.

I wish we could find a LED replacement bulb to reduce the power usage since we leave this light on so much, but I'm not sure anyone will ever make a LED replacement for this bulb.

Bottom line:  We are very happy with this bulb, and will buy another one if this one ever wears out before our microwave dies.