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The Little Diode That Could

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Aug 22, 2013
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I was helping a newer member out when I though of a little project. After talking to another member we thought it'd be fun to throw this out on the forum for everyone to see.

I have a few extra Fasttech 5V red modules and wanted to know how reliably they could run constantly. I started this project at 10pm on the 20th. The diode has been on since then with the only off period being when I switched the power from my computer's USB to a wall adapter. That makes the current run time 91 hours! To my knowledge these diodes haven't really been tested like this.

I want to know how long you all think this little diode will last before burning out. Kind of like the game where you try to guess the number of beans in the jar :)

So, here's the set up:
IMG_20131120_221947_169_zpsdfaa4068.jpg

IMG_20131121_073907_098_zps6ca26bf8.jpg


Project Progression:

2200 hrs 20 Nov 13 - First Light
2200 hrs 30 Nov 13 - 240 hours
2100 hrs 04 Dec 13 - 337 hours
1630 hrs 24 Jan 14 - 1555 hours
1630 hrs 27 May 14 - 4506 hours
2342 hrs 21 Nov 14 - 8785 hours
2100 hrs 20 Jun 16 - 22,631 hours
1845 hrs 20 Jan 17 - 27,764 hours
1945 hrs 13 Nov 17 - 34,893 hours
2330 hrs 1 Oct 18 - 42,625 hours
2030 hrs 20 Aug 19 - 50,374 hours
2230 hrs 18 Dec 19 - 53,256 hours
0700 hrs 6 Jun 21 - 66,105 hours
2100 hrs 3 Feb 22 - 72,166 hours
1200 hrs 20 Jan 23 - 80,592 hours
 
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Tmack

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91 hours?!? Wow. I have two of these little guys. Might have to put them to use now.


as for beans in the jar...............I'm going 3000 hours .

How is the heat at this amount if time???

Had to adjust that guess after seeing 3 years!
 
Last edited:
Joined
Aug 22, 2013
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91 hours?!? Wow. I have two of these little guys. Might have to put them to use now.


as for beans in the jar...............I'm going 300 hours .

How is the heat at this amount if time???

I don't have an IR thermometer but I just did the famous touch test and it's pretty close to body temp. It didn't feel warm or cool. The house is kept at about 74.


This is a $0.30 diode :) My expectations aren't quite that high
 
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I think these LD's are more like LED's so I'll say 5000 hrs CW :thinking:
 

Tmack

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Is that some kind of price is right tactic? ;)
 
Last edited:
Joined
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I Was Just Thinking The Same Thing Tmack! Are We Doing Closest Time Without Going Over?
 
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Feb 21, 2013
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Well id say there is no way for you to tell exact hours so might as well do a "xx window +/-"
 
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Well I know I plugged it in at 10pm on 20 November 2013, it was previously unused. Now I won't necessarily know when it dies exactly, but I should be able to get it to +/- 8 hours. I have a charger that has a USB port, when I put a li-ion in the charger, if power is lost the battery will run the USB. So if I go on a trip or will be away for a long time I'll be able to take it with me.
 
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Hahaha i was going to say, with Tampa's lightning storms how you going to deal with that but looks like you got it covered :beer:
 
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Fasttech's site says 5V. So what's your guess Atomicrox? We're at 240 hours!
 




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