CXA3050's Selling at $8.50 USD $10.88 CAD on Newark as I type

Do you think there worth buying at this ridiculous low price

  • Total voters
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  • Poll closed .
Mr.Head said:
yes and those fans are rated at something like 50,000 hours and are meant to cool $300 CPUS
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And a fanless heatsink is rated at infinity...

I also agree with you that active is the way to go in most cases but that is because of cost not redundancy.
 
As I said it's personal choice. I've dealt with passive cooling failures in PC's for years, I wouldn't want to run the risk of my light failing and waiting on parts in flower or something. I've seen some pretty elaborate passive cooling options in PC's and regardless of the amount of aluminum or copper they throw on top of the chips they usually fail faster compared to something that has a .03 fan on it.

I'd rather limit risk of failure by at least putting fans on the bars.

I took the philosophy when building mine to make each cob independent of the others. They all have separate drivers and heat sinks and fans. I personally feel safer knowing that if anything fails it's an easy cheap replacement. It may have cost more initially especially the drivers, but I am pretty safe from failures I won't lose my whole light if something goes very wrong.

I didn't mean for this to tear down the guys build at all :) I think it looks great. I was just offering my .02 CAD :) Since we round down here and don't have pennies anymore my .02cents ain't worth shit anyways :)
 
Mr.Head said:
As I said it's personal choice. I've dealt with passive cooling failures in PC's for years, I wouldn't want to run the risk of my light failing and waiting on parts in flower or something. I've seen some pretty elaborate passive cooling options in PC's and regardless of the amount of aluminum or copper they throw on top of the chips they usually fail faster compared to something that has a .03 fan on it.

I'd rather limit risk of failure by at least putting fans on the bars.

I took the philosophy when building mine to make each cob independent of the others. They all have separate drivers and heat sinks and fans. I personally feel safer knowing that if anything fails it's an easy cheap replacement. It may have cost more initially especially the drivers, but I am pretty safe from failures I won't lose my whole light if something goes very wrong.

I didn't mean for this to tear down the guys build at all :) I think it looks great. I was just offering my .02 CAD :) Since we round down here and don't have pennies anymore my .02cents ain't worth shit anyways :)
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I am not very fearful of failure of the lights or fans, but then again my grows are small, I still wouldnt want to lose one to light failure, but I have had the same thoughts about each cob being seperate, so if one fails, the rest remain on, going forward as I ad more cobs, i just didnt know if i wanted 6 drivers in the top of my box, or 6 drivers hanging on my light fixture?,, I like the latest lights from realstyles that use the large heat sink and one big fan and one driver for 4 cobs, simplies things greatly,, but then one fan failure or one driver failure and the majority of my cobs go dark
 
I think there are positives and negatives to both sides of these designs. Smaller heatsink for active cooling +, less power consumption for passive cooling +, single driver per COB means they don't all go dark if you have a driver failure but Single driver for 3-4 COB's means less wiring and looks cleaner. Most choices will come down to personal preference on this matter. There is no right or wrong way imo
 
It's Verical.com, the surplus outlet site of Arrow. Most COBs have 20 or 100 minimum quantities but my CXA3590 36V 5000K CD (ANSI color code) were the last three and went for $32.20 each.

Newark notified me tonight that my $8.50 COBs and Ideal 50-2234C holders will ship tomorrow.
 
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When comparing flux of the different series, notice the test current is 1400mA for CXA3050, 1900mA for CXA3070, and 2400mA for CXA3590. If my rough calculations are correct, the CD CXA3590 will only be one bin level brighter than the AB CXA3070 when both are driven by the same current.
 
sanjuan said:
When comparing flux of the different series, notice the test current is 1400mA for CXA3050, 1900mA for CXA3070, and 2400mA for CXA3590. If my rough calculations are correct, the CD CXA3590 will only be one bin level brighter than the AB CXA3070 when both are driven by the same current.
Click to expand...
Compared using Cree PTC Tool
 

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