CHANZON High Power Led Chip 10W Royal Blue Plant Grow Light (440nm - 450nm / 900mA / DC 9V - 11V / 10 Watt) SMD COB Emitter Diode Components 10 W Bead for DIY Hydroponic Aquarium Growing Lamps

Extremely bright when fully powered. Definitely requires 7-8 volts minimum (specs say 9-10 required, but it lights up on an older 9V battery, just below that, though it lights poorly). A fresh 9V battery runs it nicely, but probably not for very long at 10W. Despite the gooey yellow pad over the LEDs, it definitely shines a bright white (guessing they're tinted a mild blue normally). Solder didn't want to stick to the coating on the tabs easily, but I managed. Sanding lightly might make this easier, I guess. Overall, a solid choice if you need a bright LED and have a strong power source available. Just make sure you know your power requirements if it's battery-run.

I use these as a strobe light replacement for old SUN Distributor machines. I have had trouble with other vendors having bad segments and low brilliance. These have good performance and I will stay with these for future machines.

The output was just right. Everything else was junk. No matter how I set it up the same thing happened. It worked fine for 3 to 4 minutes, then as it got hotter it started flashing and eventually would shut down. I would let it cool down and it would repeat the same cycle. Turn on . . . flash . . . shut down.

Really good CRI on this. Stated 6-6.5k, seems more around 5k compared to other 6k arrays I use, but I think I'm comparing a poor CRI 6k to a 6k with a really good CRI so it's a more 'full spectrum' reflection of whatever I'm seeing (deeper colors). Light output is strong as well, on par with my other 3x3 arrays.

As others mentioned, this thing gets very hot, which is expected. However, in all my trials, it did not shut down on its own (though it was hot enough to melt plastic around it), and, most importantly, the current draw depends on the temperature of the light. Say you give it 9v. It draws 5w in the beginning, but then, as it warms up (with a heatsink) - it starts drawing more, which results in it warming up even more, further driving current flow, growing as much as 50% of its original power draw. This is a problem if designing lights that require deterministic power envelopes and/or current draw. My concern is that you can test it in a cool lab for as long as you want, then install in a warmer place, and they will run away melting/breaking. Turns on quickly, rough estimate - under 30ms to full brightness

The bulb works good but didn’t last long. It started to flicker and now dim after a little more than a year. Still cheap to replace it each year but it will not last 50,000 hrs

The totally invisible 940nm LED array chip works well, the forward voltage is less than 4V @900mA, so the total power consumption is less than 3.6W, not 10W as specified. Using this chip is less than straight forward and with the 900mA constant current driver sold by Chanzon, 2 of the same chips connected in series would be required to conform to the voltage requirement, which should be in the range of 6V to 10V, in my suggested configuration, that's about 8V, so it's correct. Furthermore, good heatsinks would be required, better if a fan is attached, or using a much bigger heatsink, or the chips would experience thermal-runaway, which may destroy the chips, slowly or quickly. It may not be as dangerous as screwing up a rechargeable battery, but you'd still lose money. One guy bought 100 LED array chips, destroyed 80% of them.

Even on a heatsink they get hot fast, not a problem with the product, just plain old physics. Turn the voltage down and you don't lose that much or use a fan on the heat sink, or both if you're making a flashlight out of it like I am the temperature is supposed to stay under 140 Fahrenheit

使っていた街灯が点灯しなくなったので分解したらLEDが焼けてました。 規格もぴったりなのを注文して交換したらまた使えるようになりました。 ありがとうございました。

They work and seem well constructed but I have not had chance to see how they preform overall.

I tested both LEDs together yesterday through my phone camera with a 9v and 12v batteries and it did not hide its close environment. As a an experience, it doesn't hide a face or be used to obstruct CCTV cameras as described in some videos. Not to mention the extreme heat that generate these LEDs and the potential damage to the eyes if not well protected for the IR light. Overall works fine.

投入電力によりものすごく熱をもちます。電流値制御に可変抵抗と放熱対策必要。 フルに電流流すと熱暴走をおこしやけどをします。投光器使わないと１０メートル位光はでていますが、チップを貼り付けてあるだけなのでレンス効果はありません。良くある🔦だとチップが拡大され離れても赤く見えるようです。940nmより上を使うとだんだんと見えなくなってきますが、画像処理の必要性、撮像フイルター外しなども。1000nmを越えるものもありますが、960nmあたりが遊びとしては良いですね。 おわり

Replaced my broken led with this one, low cost, and perfect match