Learn About Different LED Light Bulb Shapes and Types

Posted by Sean R on 4/7/2017 to LED Lights
Learn About Different LED Light Bulb Shapes and Types
Learn About Different LED Light Bulb Shapes and Types

LED light bulbs have taken the world by storm because of their bright light and big energy savings. These lights are being used to lighten up homes, shops, roads, offices, parks, and even conventional centers. The growing demand for LED lights has resulted in growing variety of bulbs shapes and sizes. There are many different LED light bulbs now available in a variety of shapes and sizes.   Here is a review of some of the common bulb terms and what they mean.   

Remember that this is a blog on light bulb shapes.  If you are interested in learning about light bulb bases vs shapes read that story over here.

A19 LED Bulb

The A-series LED light bulbs have a pear-like shape. The number following the designation ‘A’ denotes the width of the bulb at the widest point in one-eighth inch units. In this case, A19 means a pear-like shaped bulb having 2 3⁄8 inches width. These bulbs have a classic shape or traditional shape that most people still recognize and thus prefer.  The light bulbs are often 40 to 60 watt bulbs that produce an average of 450 to 800 lumens.  This shape is far and away the best seller.

A21 LED Bulb

Just like A19 LED bulbs, A21 bulbs also have a pear-like shape. They are bigger in size because the width is larger as compared to A19 size bulbs. A21 bulbs are also available in different base sizes including the popular E26 size bulbs.  This size is found in larger home bulbs, typically in the 75 watt, 100watt and 150 watt equivalent range.  

PAR Series

Having talked about A-series bulbs, there are PAR-series bulbs available also that are being used to illuminate spaces. The two most popular are PAR20 and PAR30 LED bulbs. PAR usually denotes the container in which the bulb is fixed. PAR helps make the light into a beam, such that it points in one direction, common for LED downlight uses.   Note that the beam can be a LED spotlight or LED floodlight shape. The number following the PAR is not the actual diameter or width of the bulb but you have to divide the number by eight to get the actual answer or width of the bulb.

PAR20 LED Bulbs

PAR20 LED bulbs are one of the most commonly purchased bulbs. They are a one direction bulb having a diameter of 2 and a half inches. These light bulbs are being used to illuminate the walls, pictures or frames. Basically, the use of PAR20 bulbs is in small spaces.  Pattern can be spot or flood, but most typically spotlight style.

PAR30 LED Bulbs

For larger downlights, such as recessed can lights you find commonly in kitchens and living rooms, you can choose PAR30 LED bulbs. These are spotlight bulbs having a bigger diameter and are ideal to illuminate larger spaces. They produce higher lumens of light than PAR20 bulbs.
LED Corn Bulbs

LED corn light bulbs are nicknamed as such because they look like a corn cobb.   The reality is that all LED bulbs look like this underneath, but usually have a diffuser over them.   Corn bulbs are typically for higher light output applications, where you do not need a diffuser.

Which One to Choose?

The choice of light bulbs totally depends on the space and your usage. If you want to light up a room or a small area, A19 and A21 bulbs are the best you can use because they spread light 360 degrees to lighten up the whole area. If you have to make your walls prominent or lighten up larger rooms with LED downlights, you can use PAR20 and PAR30 bulbs. For areas where you need massive light output then choose LED corn cobb bulbs. 

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