High brightness LED type A light bulb, A19, A21, A23, A25 bulb type family. Type A bulbs, also called standard bulbs, are the classic, pear-shaped bulb. They're used in both residential and commercial applications and screw in using an Edison screw. The most common of these bulbs are lamp bulbs or A19, which are used in all lamps, and A15 appliance bulbs.
While an incandescent bulb operates by heating its filament to a temperature that produces light, an type a light bulb emits electromagnetic energy as light when electrified. By turning energy into light instead of heat (rather than using heat to generate light), type a light bulbs are able to operate at a significantly lower temperature than other types of light bulbs.
Type a light bulbs are a very durable and reliable form of lighting – they can operate safely in colder temperatures, and can withstand more impact and vibration than other light bulbs because they have no filaments or other fragile parts. This stability makes them ideal for use in areas that will be subject to temperature fluctuations, inclement weather, and jostling.
Light bulbs of Type A includes: A15, A19, A21, and A25
They function well in a variety of home fixtures, including ceiling fans, hallway lighting, and more. They often work with candelabra bases or medium screw bases (E26 and E27) (E12). The most common light bulb size is the A19.
Can LED Bulbs Be Used in Incandescent and Halogen Light Fixtures? Yes, you can easily replace all of the halogen and incandescent bulbs in your fixtures with replacement LEDs if everything is the right size and voltage.