Electronics > Projects, Designs, and Technical Stuff
Better Quality 50W COB LED?
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BravoV:

--- Quote from: BigManBlackT-Shirt on May 21, 2018, 04:42:03 am ---I really like the old, all-in-one package with holder/mount built-in to the LED but apparently these round ones that require separate holders are the trend.

--- End quote ---

If you like that kind of mount, and yet good quality led, try Yuji Led, this is high quality build COB led and also high CRI (aka near sun light color) led and its damn expensive.  ???

$167 for 2 pcs ...  :palm:

-> https://store.yujiintl.com/collections/frontpage/products/bc-series-cob-400hs

Few reviews ..

https://youtu.be/L3LWXznJx_0

https://youtu.be/9v48gXbolFU
Psi:
+1 for yuji LEDs

i got 2x 5600k 50W cobs and plan to get 2 more warm white ones so i can have work room control between warm and cool.
BigManBlackT-Shirt:
Can it possibly be that Yuji are the only ones still making COB LEDs in that package?
BravoV:

--- Quote from: BigManBlackT-Shirt on May 21, 2018, 03:24:33 pm ---Can it possibly be that Yuji are the only ones still making COB LEDs in that package?

--- End quote ---

That package type is used by many Chinese cheap crappy led manufacturers as well, the huge different is the LED dies type, those cheap ones probably used random unsorted LED dies, while YUJI used highly binned and probably really good ones.

At above bigclivedotcom video, jump to about 3:10 to hear what his comment about YUJI's dies performance, compared to others common cheap ones.

Also he has other few videos too exploring this cheap high watt LED in this form factor in the past, he knows what he is talking when it comes to this COB leds.
Psi:

--- Quote from: Psi on May 21, 2018, 06:56:23 am ---+1 for yuji LEDs

i got 2x 5600k 50W cobs and plan to get 2 more warm white ones so i can have work room control between warm and cool.

--- End quote ---

So one of my 50W Yuji LEDs failed. a bond wire exploded.
It was about 10 months old and driven at 1.4A of its 1.5A rating.
Yuji are couriering me a replacement :)

Excellent customer service!!

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