Philips 15-Watt T7 appliance light bulb is ideal for use in microwaves, ovens, sewing machines and other small household appliances. It has an intermediate base and its rugged construction make it able to withstand shock, vibration and high temperatures. Light for all of your specialized fixtures. Philips Specialty Incandescent and halogen bulbs provide the perfect light for accent and display lighting as well as general lighting in a variety of applications.