DX  » Community » Reviews » G4 1.2W 108-Lumen 3500K 24-SMD LED Car Warm White Light Bulb (DC 12V)
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  • Overall Rating: 4
  • Price: 4
  • Quality: 4
  • Ease Of Use: 4
  • Usefulness: 4
Not quite halogen, but pretty good. – G4 1.2W 108-Lumen 3500K 24-SMD LED Car Warm White Light Bulb (DC 12V) Reviews

posted by iksbob on 07/12/2011 Certified Owner

Involvement:Expert (understands the inner workings) - Ownership:less than 1 day

Pros:
Warm white, though it seems tan compared to halogen's yellow... Color rendering seems slightly reduced in a direct comparison.
Low power draw. (measured about 100mA @ 12V)
Construction seems pretty solid.
The emitters are set up as 8 groups of 3 LEDs, with a current-limiting resistor for each group. That means if one LED fails, it will also disable the other 2 in its group, but the remaining 21 LEDs will be unaffected.
Cons:
Out of the 5 modules I ordered, one had a cluster of 3 LEDs that are DOA.
The units run hot at 12VDC. After operating for 5 minutes in open air, the PCB and emitters are up to 76°C (170°F). This seems excessive, and makes me wonder about the life span of the design. Even more so if the units are used in a closed fixture.
Other:
I bought these to use as interior lighting in my car, but they seem to need some tinkering (higher value resistors maybe) to be reliable for that.
Bottomline:
They're bright, but seem to be overdriven.

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