5W MR16 Bulb DW + 8W Driver Review

General Information

ID #223
SKU N/A
Series Yttrium Downlights
Manufacturer Yttrium (other LEDs from Yttrium)
Fitting Type Kit (other Kit LEDs)
Light Type Downlight (PAR)
Height 46mm
Diameter PAR15 (49mm)
Weight 24g
Warranty 1 Years
Test Date 2013-11-07
Review Notes Accepts 12-18V AC(50 Hz)/DC , price includes Yttrium's 8W 12V DC LED Driver. Claimed light source: Nichia LED. Carries C-Tick approval label. Despite being sold with a MR16 (GU5.3) connector, the vendor is only selling this as a kit with a driver. Retrofit to a halogen transformer is not recommended by vendor.
Price $17 (AUD) from Yttrium on 6th of November 2013
Rating

 

LED Specifications

Claimed Measured Compared To
Watts 5.5W 7W @ 245V
LED Driver Transformer
54.7W @ 12V
Yearly Running Cost[?] $1.20 $1.53 $11.98
Lumens 460 lm 315 lm 765 lm
Efficiency[?] 84 lm/W 45 lm/W 14 lm/W
Lumens/Purchase Price 27 lm/$ 19 lm/$ 170 lm/$
Power Factor[?] N/A 0.59 1
Color [?] White, 5000K Cool White, 5518K Warm White, 3015K
Angle[?] 25° 23° 45°
Dimmable Not Dimmable N/A Yes, Trailing Edge
CRI (Color Accuracy)[?] 70 71
Life 40,000 hours Not Measured 6,000 hours
Min/Max Voltage 12V / 18V N/A
Min/Max Temperature N/A / N/A N/A
Measured Temperature 59°C @ 25°C ambient
138°F @ 77°F ambient
256°C @ 25°C ambient
493°F @ 77°F ambient
Flicker Percent[?] 1% 3%
Flicker Index[?] 0.002 0.008

 

Link to manufacturer specifications at time of testing

 

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Distribution Graph

Angle: 23° (±11.5° 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: 1%, Index: 0.002 (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
5W GU10 Downlight Daylight $12 (AUD) 5.6W 283lm 96lm/W White, 5385K 23° GU10
5W GU10 Downlight Warm White $12 (AUD) 5.4W 245lm 65lm/W Warm White, 2854K 23° GU10
5W MR16 Bulb DW + 8W Driver $17 (AUD) 7W 315lm 84lm/W Cool White, 5518K 23° Kit
5W MR16 Bulb WW + 8W Driver $17 (AUD) 6.4W 227lm 65lm/W Warm White, 2876K 24° Kit

 

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.