4W LED Fancy Round Lamp CW Review
General Information
| ID | #312 |
|---|---|
| SKU | AT9402/SBC/CW |
| Series | AT9402 |
| Manufacturer | Atom Lighting (other LEDs from Atom Lighting) |
| Fitting Type | B15 (other B15 LEDs) |
| Light Type | Globe |
| Height | 80mm |
| Width | 45mm |
| Weight | 42g |
| Warranty | 3 Years |
| Test Date | 2014-08-26 |
| Review Notes | A small globe for use with the less common small bayonet cap (B15) socket. Most smaller globes tend to be screw fittings. Has good efficiency, but isn't very bright due to the low wattage. Is around the same brightness as a 30W incandescent globe. Globe is not dimable. Power factor is pretty awful, but with the low wattage this is less critical. Box carries C-Tick and CE approval labels. There is some high frequency flicker (which won't be visible to most people). Exact pricing is not known at this time. Estimated $15. |
| Price | $16 (AUD) from LED Lighting Designs on 28th of August 2014 |
| Rating |    |
|---|
LED Specifications
| Claimed | Measured |
Compared To |
|
|---|---|---|---|
| Watts | 4W | 3.4W @ 243V | 41.1W @ 246V |
| Yearly Running Cost[?] | $0.88 | $0.74 | $9.00 |
| Lumens | 280 lm | 284 lm | 430 lm |
| Efficiency[?] | 70 lm/W | 84 lm/W | 10 lm/W |
| Lumens/Purchase Price | 18 lm/$ | 18 lm/$ | 215 lm/$ |
| Power Factor[?] | N/A | 0.34 | 1 |
| Color [?] | Warm White, 4000K | Warm White, 3989K | Warm White, 2649K |
| Angle[?] | 220° | 196° | 292° |
| Dimmable | Not Dimmable | N/A | Yes, Leading or Trailing Edge |
| CRI (Color Accuracy)[?] | 80 | 80 | |
| Life | 25,000 hours | Not Measured | 1,000 hours |
| Min/Max Voltage | 220V / 240V | 240V / 240V | |
| Min/Max Temperature | -20°C / 50°C | N/A | |
| Measured Temperature | 64°C @ 25°C ambient 147°F @ 77°F ambient |
134°C @ 25°C ambient 273°F @ 77°F ambient |
|
| Flicker Percent[?] | 60% | 15% | |
| Flicker Index[?] | 0.165 | 0.044 |
Link to manufacturer specifications at time of testing
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Distribution Graph
Angle: 196° (±98° 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
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
Percent: 60%, Index: 0.165 (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 |
|---|---|---|---|---|---|---|---|
| 4W LED Fancy Round Lamp CW | $16 (AUD) | 3.4W | 284lm | 70lm/W | Warm White, 3989K | 196° | B15 |
| 4W LED Fancy Round Lamp WW | $16 (AUD) | 3.2W | 244lm | 69lm/W | Warm White, 3059K | 188° | 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.