40W Replacement Soft White Dimmable Review

General Information

ID #265
SKU BA19-04527OMN-12DE26-1U100
Series TW
Manufacturer Cree, Inc. (other LEDs from Cree, Inc.)
Fitting Type E26 (other E26 LEDs)
Light Type Globe
Height 115mm
Width 61mm
Weight 112g
Warranty 10 Years
Test Date 2014-05-01
Review Notes Part of the True White product line. Bulb appears grey-blue when switched off due to neodymium oxide layer. No doubt this was done to filter some of the LED's yellow spectrum. Trading off some efficiency to gain CRI, in order to meet the California Energy Commission (CEC) LED bulb specification. Bulbs in this series have the highest measured CRI of the 120V LED globes tested here to date. CRI was found to vary across the angle of distribution from 93-95 CRI. Dimming profile was very linear, tested using a Lutron Skylark CTCL-153P CFL/LED dimmer. Emitting area has a rubberized coating for shatter resistance. Carries UL approval label.
Price $13.97 (USD) from Home Depot on 29th of April 2014
Rating

 

LED Specifications

Claimed Measured Compared To
Watts 8.5W 8.1W @ 122V 64.7W @ 246V
Yearly Running Cost[?] $1.86 $1.77 $14.17
Lumens 450 lm 512 lm 811 lm
Efficiency[?] 53 lm/W 63 lm/W 13 lm/W
Lumens/Purchase Price 32 lm/$ 37 lm/$ 406 lm/$
Power Factor[?] N/A 0.97 1
Color [?] Warm White, 2700K Warm White, 2716K Warm White, 2711K
Angle[?] Omni-Directional 304° Omni-Directional
Dimmable Yes, Leading or Trailing Edge Excellent Yes, Trailing Edge
CRI (Color Accuracy)[?] 93 95
Life 25,000 hours Not Measured 1,000 hours
Min/Max Voltage N/A / 120V 240V / 240V
Min/Max Temperature -25°C / 45°C N/A
Measured Temperature 89°C @ 25°C ambient
192°F @ 77°F ambient
158°C @ 25°C ambient
316°F @ 77°F ambient
Flicker Percent[?] 37% 11%
Flicker Index[?] 0.11 0.034

 

Link to manufacturer specifications at time of testing

 

Dimming measurements

Graph notes: Dimming performance can be highly dependant on the type of dimmer, the number of lights in the circuit and other factors. Results in your house might vary. Mouse over the graph for more details. Position 10 = Not dimmed. Position 1 = Fully dimmed.

 

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Distribution Graph

Angle: 304° (±152° from bottom), Maximum lux:

Graph notes: Shows the intensity of the light when viewed from different angles. Normal omni-directional globes have a fairly constant output all the way around (excepting directly above). Downlights have a narrow range at the bottom in which the light is emmited, this determines their angle.

 

Spectrum Graph

Representation of color spectrum

Graph notes: Shows the breakdown of the LED light into its component colors. With short wavelength ultraviolet on the left and long wavelength infrared on the right. The green line represents the relative absolute strength of the light at each frequency, while the red line represents what the typical human eye would see. The human eye is most sensitive to green light, but much less sensitive to purples and deep reds.

 

Flicker Graph

Graph of measured flicker

Percent: 37%, Index: 0.11 (lower is better in both cases)

Graph notes: Shows variation in light output over 1/10th of a second, with relative light output on the Y axis and time on the X Axis. Measured with a photodiode connected to an Oscilloscope. Ideally the yellow line should be flat. Low frequency high amplitude waveforms mean there is a possibility of noticeable flicker, but sensitivity to flicker varies between people. [More details about LED flicker]

 

LEDs in this Series

Name Price Watts Lumens Efficiency Color Angle Fitting
40W Replacement Soft White Dimmable $14 (USD) 8.1W 512lm 53lm/W Warm White, 2716K 304° E26
60W Replacement Soft White Dimmable $16 (USD) 12.5W 700lm 59lm/W Warm White, 2685K 296° E26

 

Disclaimer: While every effort has been made to ensure the accuracy of these results, each measurement carries an inherent degree of uncertainty and error. Safety and EMC compliance of products to regional or international standards have not been verified unless noted as an ENERGY STAR® LED Lighting Facts, or SSL Quality Scheme certified product. Retailers and importers selling unmarked or unapproved electrical goods can be fined or imprisoned. Mains supplied downlights require installation by a licensed electrician.