50W Halogen MR16 Review

General Information

ID #67
SKU 20865
Series N/A
Manufacturer GE (other LEDs from GE)
Fitting Type MR16 (other MR16 LEDs)
Light Type Downlight (PAR)
Height 48mm
Diameter PAR16 (51mm)
Weight 32g
Warranty N/A
Test Date 2013-05-06
Review Notes
Price $4.50 (USD) from 1000bulbs on 3rd of April 2013


LED Specifications

Claimed Measured Compared To
Watts 50W 54.7W @ 12V
Electronic Transformer
54.7W @ 12V
Yearly Running Cost[?] $10.95 $11.98 $11.98
Lumens 775 lm 765 lm 765 lm
Efficiency[?] 16 lm/W 14 lm/W 14 lm/W
Lumens/Purchase Price 172 lm/$ 170 lm/$ 170 lm/$
Power Factor[?] N/A 1 1
Color [?] Warm White, 3050K Warm White, 3015K Warm White, 3015K
Angle[?] 55° 45° 45°
Dimmable Yes, Trailing Edge Fair Yes, Trailing Edge
CRI (Color Accuracy)[?] N/A 99
Life 6,000 hours Not Measured 6,000 hours
Min/Max Voltage N/A / N/A N/A
Min/Max Temperature N/A / N/A N/A
Measured Temperature 256°C @ 25°C ambient
493°F @ 77°F ambient
256°C @ 25°C ambient
493°F @ 77°F ambient
Flicker Percent[?] 3% 3%
Flicker Index[?] 0.008 0.008


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.



Distribution Graph

Angle: 45° (±22.5° 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: 3%, Index: 0.008 (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.