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Osram 40W Replacement Ultra LED

Osram's 40W Replacement Ultra LED is a low-cost bulb that offers a simple design and solid performance. Click through for a closer look.

Published:Caption:Photo:Tyler Lizenby/CNET

Lighting specs

Osram's "soft white" bulb puts out 450 lumens at a color temperature below 2,700K, which puts it at the reddish-yellow end of the spectrum.

Published:Caption:Photo:Tyler Lizenby/CNET

Daylight, too

For a hotter, whiter color temperature of 5,000K, a "Daylight" version of the bulb is available for a dollar more.

Published:Caption:Photo:Tyler Lizenby/CNET


The bulb features an omnidirectional design, which means it puts light out evenly in all directions. You'll want that downward light if you're ever using it in a bedside reading lamp.

Published:Caption:Photo:Ry Crist/CNET

Energy efficiency

Osram's LED draws just 6 watts, making it one of the most efficient 40W replacements you can buy. Like most LEDs, it promises to last for 25,000 hours -- well over 20 years if used for 3 hours a day, on average.

Published:Caption:Photo:Tyler Lizenby/CNET

Smaller heat sink

The bulb also features a smaller heat sink than most LEDs. This leaves more room for the bottom hemisphere of the bulb, which is where that downward light comes from.

Published:Caption:Photo:Tyler Lizenby/CNET

Dimming performance

Osram's LED is compatible with dimmer switches, though we did detect a small amount of flicker with some switches on low settings, as you can see in this GIF.

Published:Caption:Photo:Tyler Lizenby/CNET

Price point

The Osram 40W Replacement Ultra LED sells for $8 at Lowe's, and comes with a 5-year warranty. Read our full review to see how it compares with the competition.

Published:Caption:Photo:Tyler Lizenby/CNET
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