3.8W LED bulb GU 5.3 MR16 Review

General Information

ID #247
Manufacturer IKEA (other LEDs from IKEA)
Fitting Type MR16 (other MR16 LEDs)
Light Type Downlight (PAR)
Height 48mm
Diameter PAR16 (50mm)
Warranty N/A
Test Date 2014-02-05
Review Notes IKEA explicitly excludes light bulbs from it's limited warranty cover in the USA, so zero warranty for US purchases. In Australia guarantees cannot be excluded under the Australian Consumer Law but the duration is not stated. Product package carries C-Tick and CE approval labels. Globe is not dimmable. Power consumption measures higher than manufacturer's claimed 3.8W once the 12V electronic transformer is taken into account.
Price $8.99 (AUD) from IKEA on 4th of February 2014


LED Specifications

Claimed Measured Compared To
Watts 3.8W 4.7W @ 12V
Electronic Transformer
54.7W @ 12V
Yearly Running Cost[?] $0.83 $1.03 $11.98
Lumens 200 lm 236 lm 765 lm
Efficiency[?] 53 lm/W 50 lm/W 14 lm/W
Lumens/Purchase Price 22 lm/$ 26 lm/$ 170 lm/$
Power Factor[?] N/A 0.63 1
Color [?] Warm White, 2700K Warm White, 2650K Warm White, 3015K
Angle[?] 36° 31° 45°
Dimmable Not Dimmable N/A Yes, Trailing Edge
CRI (Color Accuracy)[?] 80 80
Life 25,000 hours Not Measured 6,000 hours
Min/Max Voltage N/A / 12V N/A
Min/Max Temperature N/A / N/A 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[?] 1% 3%
Flicker Index[?] 0.003 0.008



Distribution Graph

Angle: 31° (±15.5° 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: 0.003 (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
10W LED Bulb E27 Clear $10 (AUD) 9.4W 530lm 60lm/W Warm White, 2673K 241° E27
11W LED Bulb E27 $10 (AUD) 10.8W 611lm 55lm/W Warm White, 2713K 250° E27
3.8W LED bulb GU 5.3 MR16 $9 (AUD) 4.7W 236lm 53lm/W Warm White, 2650K 31° MR16
4W LED bulb GU10 $7 (AUD) 3.9W 216lm 50lm/W Warm White, 2833K 34° GU10


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.