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20 Comments

  1. Date: November 13, 2015 at 05:18
    Author: James Heslop

    Thank you for this! I've spent the past four or five hours on eBay looking for a 120 or wider degree COB at 12-15W and every time I find a 15W it's SMD, or only 60 degree! But thanks to this video I was able to get a headstart on figuring out what I need, thanks again! =)

  2. Date: November 13, 2015 at 07:47

    @James Heslop , Yes, for cob type 60degree is popular in market. Really 120degree few on the market

  3. Date: February 7, 2016 at 15:35
    Author: Phil King

    At 7:30 you say the higher you go the narrower the beam angle goes? Is it not the other way round?

  4. Date: November 11, 2016 at 18:52
    Author: Stinky Cheese

    The SMD style does not necessarily have so much glare if it is designed a bit differently, particularly not having that chrome trim ring, and they can have a modest amount of focus from an interior reflector, which in turn may place the LEDs a little deeper in the enclosure making it require a bit more clearance, and yet with the deeper enclosure the heatsinking is improved a bit so they can run at higher power for more light.

    Ultimately I use neither because my home had existing recessed lighting and I found the beam shape of standard BR30 bulbs to be fine, and they are now, towards the end of 2016, MUCH less expensive, plus it doesn't hurt that there is no rewiring needed and that when I found the first batch I bought to have poor CRI, I could relocate them where that didn't matter and find some higher CRI bulbs without unwiring and rewiring.

  5. Date: December 18, 2016 at 02:57
    Author: Okay Lah

    May i ask what is the amount of heat produced from the heat sink from both? Is it really that hot?

  6. Date: March 23, 2017 at 09:28
    Author: Islam Yunusov

    Hey, James! Such a niche overview of the two technologies. I was having a hard time understanding this until I discovered your video! Job well done! keep doing what you do! you are great!

  7. Date: October 2, 2017 at 20:15
    Author: Sudeer Shetty

    Thanks James..
    Now im come to conclusion that i need COB to my home, to define my style statement 🙂

  8. Date: October 15, 2017 at 06:04
    Author: Dico van Eeden

    The beam width on the COB LED could be changed by installing different reflectors with different angles of reflection

  9. Date: November 4, 2017 at 08:42
    Author: Maimul Hawkins

    i'm actually watchin ur video after i bought the lights..lucky i bought the COB lights…Phew~ the light i bought is 6w but really bright! ur video was really helpful.. thanks buddy!! 😀

  10. Date: December 14, 2017 at 15:50

    I am electrical engineer. I have an interview for the post of sales engineer in led lighting company. Plz give me idea about leds also about sales jobs. Plz write me on adnancecos@hotmail.com.
    Thanks in advance

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