Parathom Classic B25 Review

General Information

ID #13
SKU 4008321952202
Series PARATHOM Classic
Manufacturer OSRAM (other LEDs from OSRAM)
Fitting Type E14 (other E14 LEDs)
Light Type Globe
Height 117mm
Width 40mm
Weight 76g
Warranty 4 Years
Test Date 2013-03-22
Review Notes Light failed after several days of use. So some measurements were not completed.
Price $17.90 (AUD) from Bunnings Warehouse on 21st of November 2012


LED Specifications

Claimed Measured Compared To
Watts 4W 4W @ 240V 41.1W @ 246V
Yearly Running Cost[?] $0.88 $0.88 $9.00
Lumens 170 lm 181 lm 430 lm
Efficiency[?] 43 lm/W 45 lm/W 10 lm/W
Lumens/Purchase Price 9 lm/$ 10 lm/$ 215 lm/$
Power Factor[?] N/A 0.56 1
Color [?] Warm White, 3000K Warm White, 3046K Warm White, 2649K
Angle[?] Omni-Directional 229° 292°
Dimmable Not Dimmable N/A Yes, Leading or Trailing Edge
CRI (Color Accuracy)[?] 80 N/A
Life 25,000 hours Not Measured 1,000 hours
Min/Max Voltage 100V / 240V 240V / 240V
Min/Max Temperature N/A / 40°C N/A
Measured Temperature 68°C @ 25°C ambient
154°F @ 77°F ambient
134°C @ 25°C ambient
273°F @ 77°F ambient
Flicker Percent[?] N/A 15%
Flicker Index[?] N/A 0.044


Link to manufacturer specifications at time of testing



Distribution Graph

Angle: 229° (±114.5° 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.


LEDs in this Series

Name Price Watts Lumens Efficiency Color Angle Fitting
Parathom Classic B25 $18 (AUD) 4W 181lm 42lm/W Warm White, 3046K 229° E14
Parathom Classic P 25 $18 (AUD) 3.7W 201lm 50lm/W Warm White, 3046K 132° B22


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.