The Appliance light bulb (A15) is designed to withstand extreme temperatures. This light bulb is ideal for use in household appliances such as ovens and refrigerators. Traditional shape with medium screw base.
I bought these for my refrigerator since my old bulb blew out by simply touching it. Maybe there was an issue with temperature differences. The new bulbs haven't been a problem so far. I expect them to last for a while and 40 W is plenty bright for an ordinary refrigerator.