CA10 vs B10 Bulbs: What are the Differences? - Comparison Guide
CA10 vs BA10 Bulbs

CA10 vs B10 Bulbs: What are the Differences?

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Lighting plays a crucial role in creating the desired ambiance and enhancing the aesthetics of a space. With the advancement of lighting technology, consumers now have a plethora of options to choose from when it comes to light bulbs. Two popular options that often come up in discussions are the CA10 and B10 bulbs. In this article, we will delve into a detailed comparison between these two bulb types, exploring their features, applications, efficiency, and other factors to help you make an informed decision when selecting the right lighting solution for your needs.

Differences Between CA10 and B10 Bulbs

CA10 Bulb B10 Bulb
Shape and Size Candle-shaped Bullet-shaped
Design and Aesthetics Elegant, mimics a candle flame Sleek, bullet or torpedo-shaped
Light Output Varies (measured in lumens) Varies (measured in lumens)
Efficiency Varies (LED bulbs are more efficient) Varies (LED bulbs are more efficient)
Bulb Base Candelabra (E12) or Medium (E26) Candelabra (E12) or Medium (E26)
Lifespan Longer lifespan, LED bulbs Longer lifespan, LED bulbs
Dimmability Available in dimmable and non-dimmable versions Available in dimmable and non-dimmable versions
Application Chandeliers, wall sconces, decorative fixtures Pendant lights, accent lighting, track lighting
Cost Varies based on bulb type and brand Varies based on bulb type and brand

Shape and Size

The primary difference between CA10 and B10 bulbs lies in their shape and size. The “CA” and “B” designations refer to the shape and style of the bulb, with “CA” representing a candle-shaped bulb, and “B” indicating a bullet or torpedo-shaped bulb. The number following the letter represents the diameter of the bulb in eighths of an inch, where CA10 and B10 have a diameter of 1.25 inches.

Design and Aesthetics

The CA10 and B10 bulbs are both known for their elegant and decorative appearance. The CA10 bulb mimics the shape of a traditional candle flame, making it a popular choice for chandeliers, wall sconces, and other fixtures where an antique or classic look is desired. On the other hand, the B10 bulb features a sleek bullet-shaped design, often used in contemporary or modern lighting fixtures, accent lighting, and pendant lamps.

Check also – CA10 vs CA11 Bulbs: What are the Differences?

Light Output and Efficiency

When it comes to brightness and efficiency, both CA10 and B10 bulbs are available in various options. The light output is measured in lumens, and the wattage indicates the power consumed by the bulb. Generally, LED bulbs are more energy-efficient compared to incandescent or halogen bulbs.

Bulb Base

Another important consideration is the bulb base, which determines how the bulb connects to the socket. Both CA10 and B10 bulbs are available with different base types such as candelabra (E12) and medium (E26). It is crucial to ensure compatibility with the existing fixtures or lamps when selecting the bulb base.

Lifespan and Durability

LED bulbs, commonly used in both CA10 and B10 variants, are known for their long lifespan compared to traditional incandescent bulbs. They can last for tens of thousands of hours, resulting in reduced maintenance and replacement costs. Additionally, LEDs are more durable, as they are less susceptible to damage from vibrations or shocks.


Dimming capability is an essential feature for creating the desired lighting ambiance. Both CA10 and B10 bulbs are available in dimmable and non-dimmable versions. However, it is important to note that not all LED bulbs are compatible with all types of dimmer switches. Ensure compatibility between the bulb, dimmer switch, and the fixture for optimal performance.


The choice between CA10 and B10 bulbs largely depends on the desired application and aesthetic preferences. The candle-shaped CA10 bulbs are commonly used in chandeliers, wall sconces, and decorative fixtures, where a vintage or romantic ambiance is desired. The bullet-shaped B10 bulbs, on the other hand, are versatile and can be used in pendant lights, accent lighting, track lighting, or any fixture that requires a sleek and modern look.


The cost of CA10 and B10 bulbs can vary based on factors such as brand, bulb type (LED, incandescent, halogen), and additional features like dimmability. While LED bulbs may have a higher upfront cost compared to incandescent bulbs, they offer significant energy savings in the long run, making them a cost-effective choice.


When deciding between CA10 and B10 bulbs, it is important to consider factors such as shape, size, design, light output, efficiency, bulb base, lifespan, dimmability, application, and cost. Both bulb types offer distinct aesthetic qualities and can enhance the visual appeal of your space. Ultimately, the choice depends on your specific lighting needs and personal preferences. By understanding the differences and evaluating these factors, you can make an informed decision and choose the perfect lighting solution for your home or business.

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