Test of SKU060051 LED from Banggood.com
Sun, 6 September 2015
Few weeks ago, on 4th August I ordered on Banggood.com very cheap diodes which has been described to have very very good parameters for that price (0.78$/piece). SKU060051 warm and cool white versions. I didn't believe that the diodes will be good but I decided to give them a try. I started to test that diodes with my soviet photometer Leningrad 6 with photocell based on cadmium sulphide which was used in analog photography in 1970'.
I didn't tested lifetime. The only thing I've done and it's worth mentioning is comparision between Osram G4 12V 20W Halogen and SKU060051 diodes.
Not 10W, but absolutely worth the money.
|Light Color||Warm White / Pure White|
|Color Temperature (K)||3000-3500 / 6000-6500|
|Voltage (V)||DC 9-12|
|Forward Current||1050 mA|
|Luminous Flux (lm)||900|
|Dimension(mm)||20mm x 14mm|
Firstly, I measured light in normal daylight conditions (I must increase gamma level on video, so increased brightness isn't any additional lighting, it's increased gamma). The measurement was 12.0 units.
Secondly I measured cool white diode. The measurement was 15.05 units.
Next one measurement was Osram 12V, 20W Halogen G4. The measurement was: 13.5 units.
Next, I tested warm white diode. The measurement was 14.5 units. I must notice, that light temperature is significantly different than cool white, and it's truly warm, little cooler than halogen light.
The diode matrix is combined from 9 diodes. And it's getting hot at maximum current (1A), so cooling (for example by radiator) is needed.