COB5WMR16CW120*ND Review

General Information

ID #50
Series N/A
Manufacturer Veco (other LEDs from Veco)
Fitting Type MR16 (other MR16 LEDs)
Light Type Downlight (PAR)
Height 80mm
Diameter PAR16 (50mm)
Weight 86g
Warranty 2 Years
Test Date 2013-03-19
Review Notes Has a hot spot of > 80C which might shorten the life of the bulb.
Emits an audible buzzing sound when driven by an electronic transformer.
Price $14.90 (AUD) from Ebay seller trailertruckpartsvictoria on 26th of April 2013


LED Specifications

Claimed Measured Compared To
Watts 5W 5.1W @ 12V
Electronic Transformer
54.7W @ 12V
Yearly Running Cost[?] $1.10 $1.12 $11.98
Lumens 425 lm 387 lm 765 lm
Efficiency[?] 85 lm/W 76 lm/W 14 lm/W
Lumens/Purchase Price 29 lm/$ 26 lm/$ 170 lm/$
Power Factor[?] N/A 0.83 1
Color [?] Cool White, 6500K Cool White, 5823K Warm White, 3015K
Angle[?] 120° 115° 45°
Dimmable Not Dimmable N/A Yes, Trailing Edge
CRI (Color Accuracy)[?] N/A 74
Life N/A Not Measured 6,000 hours
Min/Max Voltage 12V / 12V N/A
Min/Max Temperature N/A / N/A N/A
Measured Temperature 85°C @ 25°C ambient
185°F @ 77°F ambient
256°C @ 25°C ambient
493°F @ 77°F ambient
Flicker Percent[?] 87% 3%
Flicker Index[?] 0.225 0.008



Distribution Graph

Angle: 115° (±57.5° 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: 87%, Index: 0.225 (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]


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.