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What do you need to know about BR30 bulbs?

July 7, 2025
br 30

Have you ever encountered the term BR30 on light bulbs or their boxes? Well, you are not alone. Many people know the term BR30 but lack knowledge of what it means.

In simple words, BR30 is a bulb code that explains its size, style, and shape. Read this article to learn what a BR30 light bulb is and why the LED version of this bulb is popular nowadays.

What Does BR30 Mean? 

BR30 is a code assigned to a unique type of light bulb. This code helps explain the bulb’s size, type, and shape.

BR stands for bulged reflector, where bulged means rounded and reflector refers to a shiny surface that reflects light inside. Simply put, BR led bulbs are rounded in shape with reflective insides to distribute light evenly.

Commonly used incandescent light bulbs

The numeric part of the code refers to the bulb’s diameter, which is measured in eighths of an inch. A BR30 bulb’s diameter is 30/8 = 3.75 inches.

These bulbs are designed to provide broad and soft lighting distribution, making them ideal for use as a lighting source in homes. Due to their compact size, these bulbs are popularly used in recessed lighting. 

The rounded top of this LED bulb acts as a light diffuser, distributing light evenly throughout the area rather than concentrating it in a single spot. Lighting buyers often debate the topic of PAR 30 vs BR 30, and some even consider them the same.

PAR bulbs produce a narrow, focused light beam due to their flatter front and are ideal for spotlighting. Alternatively, BR light bulbs, with their rounded front, make abroad and soft light beam suitable for general lighting.

BR30 Bulb Dimensions and Fitting Guide

Before fitting the BR30 bulb, electricians must know its size and dimensions. BR30 LED bulbs commonly measure 5.1 inches long and have a diameter of 30/8 = 3.75 inches. 

Owing to its size, this type of bulb is suitable for most four—to six-inch recessed cans and track lights. The energy efficiency of these LED light bulbs makes them popular for indoor lighting fixtures, especially in residential settings like kitchens, dining rooms, and laundry rooms.

These bulbs come to the rescue in cases where space is limited but a wide and even distribution of light is required. Many people confuse BR30 bulbs with BR40 bulbs or consider them the same.

It is important to note that the difference between these two bulbs is in their sizes. The BR40 bulb is slightly larger, measuring 6.3 inches long and 5 inches wide. A BR40 bulb cannot fit in a can designed for a BR30 bulb.

Quick Tip: Check the label details on the fixture or measure the can size to buy an incandescent light that fits properly and is compatible with the fixture.

BR30 vs BR40 vs PAR30 vs A19 light bulbs

BR30 vs BR40 vs PAR30 vs A19: What’s the Difference?

Lighting buyers must compare BR 30 vs 40 vs. PAR30 vs. A19 to choose the bulb that matches their requirements. The table below provides a detailed comparison of shape, diameter, beam angle, and the best use of each bulb.

The following table should help interior stylists and DIYers choose the correct bulb for their residential or commercial lighting fixtures.

Bulb TypeDiameterShapeBeam AngleBest For
BR30Around 3.75 inchesBulged or roundedWide approximately 120°Use in Recessed ceiling lights
BR40Around  5 inchesMore bulb-shaped or rounded as compared to BR30 LED lampsWide Bigger and wider ceiling fixtures
PAR303.75 inchesNarrow, Flat, or ParabolicNarrow around 40° to 60°For Accent and task lighting
A19Approx 2.375 inchesTypical round bulb shape360° - OmnidirectionalBest for use in lamps and table lights

The side-by-side comparison above helps business owners and retailers choose the correct bulb. However, if you’re still confused, then each bulb breakdown is provided below for further ease:

1. BR30 (Bulged Reflector 30):

BR30 LED bulbs deliver an expansive beam that softly illuminates the space where they are installed. Their dimensions and size make them famous in kitchens, bedrooms, and hallways.

2. BR40 (Bulged Reflector 40):

BR40 is the bigger version of the BR30 LED bulbs. Both bulbs are the same shape, but their sizes differ. The BR40 diameter is calculated as 40 ÷ 8 = 5 inches. If you need a wide light shaft and soft light output, and your light fixture is spacious, then BR40 is your go-to bulb option.

3. PAR30 (Parabolic Aluminised Reflector 30):

BAR30 and PAR30 bulbs both are idea source of energy

PAR bulbs are concentrated, while BR bulbs are more diffused. PAR30 is used to highlight artwork or display products, as it delivers a very concentrated beam and is ideal for spotlighting. These bulbs have the same diameter as BR30, but the light pattern and beam path distinguish them. 

4. A19 (Standard Household Bulb):

The A19 bulb is the most common bulb used in households. It is often seen in table lamps, floor lamps, decorative lighting, and general lighting sources.

When comparing BR30 vs. A19 for residential usages, A19 is the favored choice. It spreads light evenly in all directions and is narrower than all the above bulb options.

When and Where to Use BR30 Bulbs

BR bulbs are typically used in indoor lighting fixtures, especially in places that use recessed or can lighting fixtures.

These bulbs provide a wide beam followed by uniform and brightly distributed illumination. Owing to these benefits, they have particularly replaced other fluorescent light bulbs.

LED bulbs are widely used in decorative lighting

Even with all the advantages of BR30 bulbs, they cannot be used everywhere. Below are some places where you should prefer and avoid BR30 bulbs.

Best Uses for BR30 Bulbs:

BR30 bulbs are commonly used in all types of real estate, including:

  • Living Rooms: In living rooms, BR30 bulbs provide warm and smooth lighting that helps with relaxation.

  • Kitchens: Selecting the right light is one of the standard rules to follow while designing kitchens. The light source needed in kitchens must have a high color rendering index and be able to distribute light evenly. BR30, fulfilling both these requirements, is thus excellent for use in kitchens.

  • Hallways & Entryways: One of the most common tips for designing hallways is ensuring proper light selection. An even and wide distribution of light is needed in hallways, and BR30 bulbs help ensure visibility throughout the entryways.

The light emitted by a BR30 bulb is warmer compared to that of an A19 bulb.

  • Home Offices: BR30 bulbs should be used in home offices to reduce eye fatigue and help concentrate on tasks. These bulbs offer clear and wide coverage without glare, making them ideal for the work setting.

  • Commercial Places: BR30 LED bulbs’ capacity to spread uniform light makes them popular in the hospitality and retail sectors.

Where are BR 30 Bulbs Not Advised For Use?

Some of the familiar places where using a BR30 or BR40 bulb is not advised include:

  • Desk or Table Lamps: You may have noticed that desk lamps reflect light only on a particular area. Desk lamps help people focus only on the lighted area. As BR30 distributes light all over the place, it becomes tricky to focus, so they are not suggested for use in desk lamps or study tables.

Spotlight fixtures are mostly used to highlight artifacts

  • Spotlight Fixtures: In museums, a specific light is used to help visitors focus on particular artefacts. This type of lighting is referred to as a spotlight. BR 30 bulbs cannot be used with spotlight fixtures as they distribute light all over instead of keeping it focused on a certain point. 

If you are considering replacing your old lighting source with BR30 bulbs, note that these bulbs commonly don’t have water or weather resistance.

So, it’s best to install them indoors. A bulb marked water-resistant, outdoor-rated, or wet-rated should only be used for outdoor applications.

Choosing the Right BR30 LED Bulb: 5 Key Features

While choosing the BR30 bulb for your lighting needs, make sure to consider the five key features mentioned below:

Chart indicating traditional incandescent bulbs’ wattage equivalent to BR LED lamps’ lumens.

A. Brightness (Lumens)

The brightness of the bulb refers to the visibility of light. Brightness is measured in lumens—the higher the lumens, the more luminous the light. When choosing bulbs, you should not rely only on wattage.

For example, a 65-watt incandescent bulb produces roughly 650–750 lumens in LED form.

LED bulbs consume less energy and can deliver more lumens than incandescent bulbs. So don’t limit your decision to wattage only—analyze lumen ratings to ensure your brightness needs are met.

B. Beam Angle

The standard beam angle of BR30 bulbs is 110–120°. This beam range guarantees enough light for spacious settings.

Lighting buyers should consider the beam range they require before choosing any bulb. DIYers should never install PAR bulbs in BR fixtures, as the narrow beam of PAR bulbs can create uneven lighting distribution or glare.

the different beam angle of lights

C. Light Color (Kelvin)

The light color temperature refers to how warm or cool the light appears to human eyes. It should also be considered when purchasing any light bulb. Three light color temperatures are: 2700K = warm white, 3000K = soft white, and 4000 K+ = cool white.

Lighting buyers must choose the perfect color temperature to match their lighting needs. If you are buying a light source for your home, choose 2700K or 3000K bulbs, as 4000K is too bright.

D. CRI (Color Rendering Index)

The Color Rendering Index (CRI) refers to how well a light source displays colors compared to natural light. The CRI scale ranges from 0 to 100. A CRI of 90+ is considered perfect, 80+ is regarded as good, and less than 80 is considered poor.

Light bulbs with CRI 80 are ideal for residential use as they use less power and do not contribute to eye strain. When buying a BR30 or any other light bulb, ensure you understand your rating requirements to make the correct choice.

Different color temparture offer different light output

E. Dimmability

The last and most essential feature to consider while buying BR 30 bulbs is the dimmability feature. Not all BR30 LEDs are dimmable; check the label to choose the dimmable light. A non-dimmable BR 30 bulb can cause flickering, so it is not the best light source.

Conclusion

If you are looking for soft indoor lighting for recessed ceiling fixtures in hallways, kitchens, or warehouses, then BR30 LED bulbs are the ideal choice. These bulbs offer a well-distributed beam and efficiently light up any spacious area.

Remember to check bulb specifications like lumens, CRI, colour temperature, and dimming features to make the right choice. Lastly, choose a reliable supplier to get the right bulb for your needs and to save money in the long run.

Partner with Risun Corp for High-Quality Lighting Solutions

The staff at Risun Corp is experienced in efficiently meeting all your lighting needs. With our vast lighting knowledge, we can fulfil all your needs, no matter how unique.

With years of experience in offering one-stop lighting solutions and supplying lighting management for lighting brands, we are sure that we will not disappoint you. 

So why waste your time with others? Contact us to place bulk orders for BR30 and other LED bulbs now.

FAQs 

Q1. What is BR30 vs BR40?

BR30 and BR40 are typical bulb codes. BR refers to a Bulged reflector, whereas 30 and 40 refer to the bulb’s diameter. Both bulbs are identical in size, but the diameters of these LED bulbs differ. BR40 light bulbs are bigger and broader than BR30 light bulbs.

Q2. Will a BR30 fit a 4-inch recessed light?

A 4-inch recessed light is deemed small for a BR30 light bulb. The BR30 light bulb is around 3.75 inches wide but needs 5 to 6 inches of recessed lighting to fit in. If your recessed light is around 4 inches, the preferred bulb option is BR20.  

Q3. Can I use BR30 instead of A19? 

You can use a BR30 bulb instead of an A19, but only if the fixture can accommodate the wider bulb. BR30 bulbs are typically used in recessed cans, while A19 bulbs are commonly used in homes for general lighting.

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About Anne Wu

Hi, I'm the author of this post, and I have been in this field for more than 15 years. If you want to wholesale lighting fixtures or lighting related product, feel free to ask me any questions.

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