Oven lamps are designed to withstand the high temperatures found in any cooking appliances
Do not use any other lamps in cookers as they could explode! This is one area where led is not an option and a compact fluorescent would definitely not be good!
There are two shapes to choose from including a pygmy and a golfball shape, simply match the one that comes out of your oven for a trouble free replacement
If you are after a lamp for a fridge or other appliance then you only need a regular Appliance Lamp. Of course when away from the heat of an oven you can go energy saving and try an LED Appliance Lamp which will last much longer and use less energy!