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led pcb board Customers Reviews

  • Nice Led board

    posted by elpelikano

    Good qualityGood thermal conductorGood priceGood finishEasier to solder with 1W leds
    Useful for connecting several board and get a high illumination.
    Ideal for use with a heatsink. I recommend using silicone grease
  • Powerful light

    posted by albertcfont

    pure white and very powerful light. Compact. I'll use it for an aquarium daylight. I'm happy with this LED board but it's a little bit expensive for beien a DX one
    Maybe it could cost a few dollars less, but it covers all my needs
    Do not forget to add extra heatsink, it gets really, really hot!
  • Lots of board with small price

    posted by rigorm

    Easy to use. Clearly marked plus and minus soldering points. I have already used ovet ten of these. Two points for led contacts and two for wiring. Pretty small boars in big sheet. I used these with sku 146854 3W 2850~3050K 160~180lm LED Warm White Light Bulbs (10-Piece Pack) Works very well together.
    Cheap
    If you need lots of small led PCB boards this this is good choise.
  • Good for the price, but doesn't match the spec

    posted by rosenanastasov

    Efficient LEDs. Easy to use also. Works flawless even on higher current (I tested them on ~1A) with proper cooling.
    Would be very nice if they matched the description about the color temperature. Since the LEDs are not marked with any code I suppose there is a chance that my order somehow got mistaken.
    Good for the price. Easy to use. Provide a lot of light. But get a sample first to check the color index.
  • Quick electric test of 28-LED PCB

    posted by MarcoWink

    Compared to small emitters (10W, 20W) on metal board, this one has a much larger area, so cooling is more convenient and less critical wrt thermal conductivity.
    All leds appear to have same light intensity, aluminum PCB will make sure temperature is about the same over the board, which is important.
    Price per lumen, convenient.
    - heatsink/PCB is large enough to enable to run the light without additional cooling till about ~5W (0.25A, 20.5V)
    - I made some quick measurements, the PCB appears to have a Rth of about 4K/W. At 10W end temp of PCB was 60 C, at room temperature (not recommended for permanent use), note that in a ceiling fixture environment temperatures will be higher.
    - Note that when temperature of the leds increases, current increases with same voltage, so use a real current source in stead of voltage source to stay save!
    - you could cut (saw) the PCB if you need another voltage!
    "2800" lumen for 20 USD is good offer, convenient module.

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