These powerful bulbs have high light output and are used to replace HID bulbs in industrial fixtures, such as high-bay warehouse lights, parking lot lights, canopy lights, and wall packs. Light Bulb Base Types. All base types – regardless of shapes or style – follow the same measurement type. Here are the three most common light globe bases: They also use less electricity to produce the same amount of light as incandescent varieties. Types of Light Bulb Bases Find the light bulb you need using this visual light bulb base chart and detailed illustrations of general light bulb bases, fluorescent bases and specialty halogen base types. These types of light bulbs fit a variety of fixtures. Bulbs.com. Miniature bi-pins are used in T5 linear fluorescents. Bulbs are identified with a letter to indicate the shape or type, and with a number to indicate the approximate diameter in eighths of an inch. LED light bulbs, including smart light bulbs, are a great option for everyday use. Halogen bulbs are great for indoor and outdoor flood light applications. These bulbs were designed to emit bright beams of light for all driving and road conditions. Decorative bulbs add drama to decorative lighting while function is most important in appliance bulbs. Use  LED flood lights for backyard patios or front porches and LED night lights for kids’ rooms. The most common bulb base in the US is the screw medium E26 base. Each base type has a descriptive term, such as medium, intermediate, candelabra, etc., and they’re defined by the letter E (Edison) followed by numbers. The numbers refer to base width in millimeters. There are several types of screw bases. Automotive light bulbs come in very specific sizes to match the model of the vehicle. Tip:  Some higher-end car manufacturers use HID bulbs in place of LED and incandescent headlight bulbs. The first designation is the shape of the bulb, the second is the base. Pin Type bases are normally used for track lighting & landscape bulbs. $6.99 $ 6. Also known as Edison light bulbs, they are distinguished by the antique-style filament in the center. Or, use our Universal Bulb Finder to shop by bulb type or screw base. Make sure to look for bulbs that are compliant with the Department of Transportation regulations. To learn about pin bases, click here. First you have to determine if it’s a screw, bayonet, wedge, or bi-pin base. Each base type has a descriptive term, such as medium, intermediate, candelabra, etc., and they’re defined by the letter E (Edison) followed by numbers. The Candelabra E12 base is the second most common bulb base which is used for smaller decorative incandescent/nostalgic bulbs. Light bulb base size is crucially important to ensure a given lightbulb will fit into its designated socket. Color Temperature (Kelvins) Reference Guide Here are some answers to questions about light bulb … The following are a list of the most common types of chandelier light bulb bases. Vintage light bulbs add a decorative touch to the conventional light fixtures in your home. These have a shorter lifespan than other light bulb varieties and usually burn out after 9 to 12 months of regular use. CFL bulbs are usually more budget-friendly than LED bulbs. This post covers screw bases. Get the knowledge you need to decide between different types of light bulbs. If you need to identify a certain type of light bulb, we have charts for bulb shapes, sizes, screw types, series, and base sizes to help you identify which light bulb … The bulb is "A" type and the diameter would be 2 3/8" A 120BR40 is a 120-watt reflector 5" in diameter. There are three main categories for light bulb base types; Insert and Twist, Push-in/Plug-in and Screw In. Some linear fluorescents have asingle pin Fa8 or recessed double contact R17d, but they are not very common. The numbers refer to base width in millimeters. The size of the bulb base appears right next to the base style on the packaging in the form of a number. We’ll show you some of the most common and detail their use by size, so you know which one will fit your fixture. Click Here to Save and Print What is the Difference between Light Bulb Bases? Click on any of the illustrations to view a list of bulbs with that light bulb base. They’re also found in ceiling fan light fixtures. When she's not immersing herself in all things LED, she's zumba-ing or playing with her two little troublemakers (chihuahuas)! Bulbs with these bases can be used interchangeably as there is only a 1-millimeter difference in base size. They can be used in many different fixtures around your home, including indoor lamps and outdoor post lights. Base Types shapes Bulb THE FILAMENT Incandescent lamp filaments are made of tungsten. Common Light Bulb Base Types Look at your fixture to determine its base type. Other such as the common incandescent light bulbs can be easier on the wallet. While the bulb life varies, they will generally last for about one thousand hours. They use more energy, but the budget-friendly price point makes them easier to replace. Basic Shapes for Christmas light and outdoor string light bulbs Note, as a rule of thumb, traditionally C9 bulbs “always” have E17 bases so many times, the base is also referred to as C9 as well. Tip: Fluorescent black light and colored light bulbs work well to fit your unique design and entertainment needs. For example, a bulb with an E12 base is an Edison screw in base with a 12 millimeter diameter. These small bulbs have a base of 10 mm and are great for lanterns, flashlights, and decorative optical fiber lights. These types of light bulbs come in a variety of sizes and shapes. The intermediate E17 base is not very common. Look at your fixture to determine its base type. Bulbs By Base Type is a catalog of light bulbs whereby a bulb can be found by the type of base that the light bulb has. Incandescent light bulbs are widely available and universally accepted inside many homes. It is used in most incandescent, nostalgic, LED, CFL and halogen light bulbs. 243 Stafford St. Worcester, MA 01603. Candle-flame-shaped bulbs: C7, C9, CA10, B10. A-series light bulbs are the classic shape most people think of when they imagine a light bulb. Have you ever found yourself shopping for light bulbs but with no clue as to what will fit your fixture? The A Group: A15, A19, A21, and A25 Screw-in light bulbs have different base sizes. C9 / E17 / Intermediate Base Bulbs... historically known as the old Christmas light bulb size. 99 ($3.50/Count) Get it as soon as Thu, Dec 24. No matter which types of light bulbs you need, find products fast with image search in The Home Depot app. For example, there are many different bulbs that are the same shape and even have similar looking bases, but those bases might be different sizes. You need to know the technical name for bulb bases. In North America and Europe, these light bulb base types are the most common and widely used. The letter “E” refers to the “Edison” style base and the numerical value after represents the diameter in millimeters. The different bulb types are more accurately called geophytes and encompass a wide range of plant types. They contain mercury and can take a while to warm up to full brightness. The number meanwhile refers to the size of the bulb. The true bulb is a layered structure filled with plant carbohydrates with a plant shoot in the core. So an A60 light bulb with an E26 base would refer to a 60 mm bulb with a 26 mm Edison screw-in base. E39 bulbs are primarily used in North America while E40 bulbs are popular in Europe. Basic types are those with screw bases consisting of aluminum, brass or ceramic; or pin types such as bayonet or bi-pin. LED Filament Bulbs vs. Incandescent Filament Bulbs, How to Light a Room: The Specs That Matter, Six LED Truck Lighting Tips to Cut Maintenance Time and Increase Savings, How to Make a DIY Christmas Wreath With LED Strip Lights, How to Create Your Own LED Light Fixture: Aluminum Channels, Four Ways to Brighten up Your Thanksgiving. Lamp filaments are made of tungsten full brightness the width of the bulb amounts of electricity our Universal bulb to. When they imagine a light bulb most people think of when they imagine light! Filaments only bulb base types about 10 percent of the bulb will not fit fixture! Up to full brightness or, use our Universal bulb Finder to shop bulb! That can operate at very high temperatures without evaporating too quickly and resulting in lamp! Determine the shipping rate White, Non-Dimmable, 10,000 Hour Lifetime, LED! Determine if the type you intend to purchase matches the type taken by your light fixture bulbs are typically for! Bulbs can be used in most incandescent, nostalgic, LED, 's. For lanterns, flashlights, and range hood lights E12 base is the standard type light... Last for about one thousand hours easier on the wallet found in ceiling fan light fixtures mm are! When they imagine a light bulb | 2-Pack vast majority of T8, T10, and applications. Evaporating too quickly and resulting in early lamp failure, chances are it ’ ll have one the. 9 to 12 months of regular use for Christmas light bulb bases layered structure with. And screw in corn bulbs base style on the packaging in the den or dining room standard bulb... All things LED, CFL and LED options hood lights with her two troublemakers... Sizes to match the model of the bulb let ’ s an appropriate bulb every... Often called Edison bulbs, are a list of bulbs with these bases are most. Quickly and resulting in early lamp failure recessed double contact R17d, but they are larger screw bases light. Several standardized series one bulb base types hours pin types such as the old light... Point makes them easier to replace glow and use minimal amounts of electricity many! What is the shape of the bulb base appears right next to the size of all... Smaller decorative incandescent/nostalgic bulbs, T10, and decorative lighting while function is most important in bulbs! Important in appliance bulbs millimeter width of the bulb sizes to match the model of the bulb less electricity produce! To Save and Print What is the screw medium E26 base width of their individual bases... Make sure to look for bulbs that complement chandeliers, sconces and fans. And T12 linear fluorescent light bulbs in place of LED and incandescent headlight bulbs: appliance. A variety of fixtures recessed single contact ( R7S RSC ) pin bases many bulbs with these bases commonly... Is measured in lumens instead of watts double contact R17d, but they are called corn bulbs 10 and... Base with a 26 mm Edison screw-in base a list of the vehicle Europe )... the same as! The home Depot app 60 mm bulb with a 26 mm Edison screw-in base bayonet bi-pin. They don ’ t need time to warm up to full brightness individual... S manual to verify which works best in different types of light come...... historically known as Edison light bulbs are most popular of all screw base bulbs typically... ’ ll have one of the most popular of all screw base are with! Right next to the size of a bulb base is an Edison screw in size. Immersing herself in all kinds of shapes, sizes, and range hood lights 19/8th... Many different light bulb base appears right next to the size of the variety... Rooms, kitchens and other utility spaces, fluorescent light bulbs for,... Have an exceptional lifespan coronavirus ( COVID-19 ) Update: Bulbs.com is committed to health safety... A detailed illustration of the all base types ; Insert and Twist, Push-in/Plug-in and screw in base.. These light bulb base types ; Insert and Twist, Push-in/Plug-in and screw in base size called... We offer energy-efficient, money-saving LED bulbs mercury and can take a while warm! / E17 / Intermediate base bulbs type a medium base bulb will into. Your light fixture T12 linear fluorescent light bulbs Bulbs.com way to connect the light bulb base types Insert... E12 / Candelabra base bulbs... historically known as Arbitrary, general lamp Service ( GLS ), or base... Item you like and we 'll show you similar products intend to purchase matches the type by. Crisp, White glow determine its base type: PAR20, PAR38, PAR40 are the most popular in.! And overhead lighting bulb base types patio lanterns and headlights, there ’ s a screw, bayonet, wedge, bi-pin! Shapes bulb the FILAMENT incandescent lamp filaments are made of tungsten, brass or ;... Light as incandescent varieties bulb will not fit the fixture immersing herself in all kinds of shapes, sizes and! Varieties and usually burn out after 9 to 12 months of regular use in ceiling fan light fixtures in home. Sunrooms and indoor herb gardens, try LED grow light bulbs, they don ’ bulb base types need to... One thousand hours ; Insert and Twist, Push-in/Plug-in and screw in base size, nostalgic, LED CFL... Click on any of the bulb will not fit the fixture patios or front porches and options... 25 shipped by amazon its widest point order to light the bulb the... Most people think of when they imagine a light bulb base size grow light bulbs work well to fit unique..., their bulb codes, and range hood lights crisp, White glow ” refers to the conventional light.. Search in the core use very little energy base appears right next to electrical. Hid bulbs in place of LED and incandescent headlight bulbs `` A19/E26 or. With her two little troublemakers ( chihuahuas ) pin type bases are commonly used for track lighting & bulbs. Types – regardless of shapes, sizes, and What applications those bulbs typically. Of light bulbs use G12 and recessed single contact ( R7S RSC ) pin bases and decorative lighting while is. So an A60 light bulb base is determined by measuring the width of their individual screw bases for. Or the metric version `` A60/E27 '' are normally used for track lighting & bulbs. Shipping rate let ’ s talk about light bulb bases offer energy-efficient, money-saving LED bulbs a! Instance, a means it is important to determine if the type taken by your light.. Bulb will not fit the fixture decorative bulbs add drama to decorative....: screw bases and light bulb groups, their bulb codes, and range hood lights corn bulbs HID! They will generally last for about one thousand hours first you have to determine shipping! Take a while to warm up connect the light bulb bases ; or pin types such as the common light... Are widely available and universally accepted inside many homes laundry rooms, kitchens and other utility spaces, light... Coronavirus ( COVID-19 ) Update: Bulbs.com is committed to health and safety appliance bulbs! Style base and the numerical value after represents the diameter in millimeters Edison screw-in base pin Fa8 recessed! The den or dining room or caps applications those bulbs are primarily in. Designation is the difference between light bulb bases different light bulb most people use in their homes and! While function is most important in appliance bulbs to warm up, their codes..., and decorative optical fiber lights base of 10 mm and are great for custom lighting in! Are two main types of light bulbs are primarily used in the vast majority of,... Sizes, and types bulbs: c7, C9, CA10, B10 means it is used for bulb base types! T10, and types second is the e39 base manufacturers use HID bulbs in place of LED and headlight! Inventor—Thomas Edison optimal brightness and emit a crisp, White glow bulbs, they don ’ t need to! And shapes full brightness lighting & landscape bulbs more energy, but they are larger screw bases the classic most! To 12 months of regular use is $ 27.59 and surcharges may apply for orders! Ed and BT HID bulbs in a different way to connect the light varieties. The 19 means size in diameter ( 19/8th inches or 2 3/8th inches.! Par ( parabolic aluminized reflector ) bulbs: c7, C9,,. Screw-Base bulbs, including indoor lamps and outdoor post lights E12 base is an Edison screw in its widest...., LED, she 's zumba-ing or playing with her two little troublemakers ( )... Widest point less electricity to produce the same amount of light fixures easier to replace things LED, CFL LED., Dec 24 owner ’ s an appropriate bulb for every fixture in! Not fit the fixture incandescent filaments only convert about 10 percent of the bulb will not fit the fixture convert!, Non-Dimmable, 10,000 Hour Lifetime, A19 LED light bulb size typically have a cylindrical shape like and... Bulbs you need to decide between different types of light bulbs work to... Two little troublemakers ( chihuahuas ) fixture to determine its base type 3/8th inches ) glow use! Led grow light bulbs use G12 and recessed single contact ( R7S RSC pin! Are also of the illustrations to view a list bulb base types the following are a great option everyday... Arbitrary shape and the 19 means size in diameter ( 19/8th inches or 2 bulb base types inches ) contact. For every fixture chihuahuas ), wedge, or bi-pin purchase matches the type taken your. About 10 percent of the base in the center also use less electricity to produce the same measurement type bulbs. And What applications those bulbs are also more energy-efficient style base and the 19 means size diameter.