5W MR16 WW Downlight Review

General Information

ID #116
SKU N/A
Series N/A
Manufacturer iGlobe (other LEDs from iGlobe)
Fitting Type MR16 (other MR16 LEDs)
Light Type Downlight (PAR)
Height 52mm
Diameter PAR16 (50mm)
Weight 40g
Warranty 5 Years
Test Date 2013-05-21
Review Notes Efficiency was excellent. Wattage was accurate, running temperature was good. It was within 10% of their claimed 410lm output. Light distribution angle was really broad. PF was acceptable. Colour 2980K was pretty accurate and didn't vary much with the angle. About the only issue was the CRI, which wasn't all that good (some reds and pinks might look a bit funny under the light)
Price $12.90 (AUD) from www.iGlobe.com.au on 30th of August 2013
Rating

 

LED Specifications

Claimed Measured Compared To
Watts 5W 5.2W @ 12V
Electronic Transformer
54.7W @ 12V
Yearly Running Cost[?] $1.10 $1.14 $11.98
Lumens 410 lm 379 lm 765 lm
Efficiency[?] 82 lm/W 73 lm/W 14 lm/W
Lumens/Purchase Price 32 lm/$ 29 lm/$ 170 lm/$
Power Factor[?] N/A 0.59 1
Color [?] Warm White, 2900K Warm White, 2988K Warm White, 3015K
Angle[?] 90° 86° 45°
Dimmable Not Dimmable N/A Yes, Trailing Edge
CRI (Color Accuracy)[?] N/A 60
Life 50,000 hours Not Measured 6,000 hours
Min/Max Voltage 12V / 12V N/A
Min/Max Temperature N/A / 45°C N/A
Measured Temperature 55°C @ 25°C ambient
131°F @ 77°F ambient
256°C @ 25°C ambient
493°F @ 77°F ambient
Flicker Percent[?] 22% 3%
Flicker Index[?] 0.017 0.008

 

Link to manufacturer specifications at time of testing

 

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Distribution Graph

Angle: 86° (±43° 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: 22%, Index: 0.017 (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.