Old 04-18-2011, 10:05 PM #17
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

Hey, Greg, maybe you should do a sale on these to untie up your inventory? Haha. I would like one of these but I already ordered a 803T from Hightechdealz :\


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Old 04-18-2011, 11:55 PM #18
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

@Greg
I was a little worried when my order was taking a while to ship, but after today, when i openned my package from you i was like
the "goodies" are schhwweeetttt!! well worth the wait in my opinion, also, couldnt help it, had to use the 445 that was already pressed in right away. I just got done building another 1.4W 445... review thread on it in an hour or so.

again thanks greg! cant wait for those phr-805's
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Old 04-19-2011, 12:09 AM #19
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

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@Greg
I was a little worried when my order was taking a while to ship, but after today, when i openned my package from you i was like
the "goodies" are schhwweeetttt!! well worth the wait in my opinion, also, couldnt help it, had to use the 445 that was already pressed in right away. I just got done building another 1.4W 445... review thread on it in an hour or so.

again thanks greg! cant wait for those phr-805's

Glad I was able to make things right for you !
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Old 04-20-2011, 11:56 PM #20
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

OK Anselm, hate to bother you again! But here is more data - this time I killed a PHR-803t from my personal stash for direct and equal comparison to my 805 tests. I downloaded open office, but just like excel, just can't figure out how to do those darn graphs! Anyway here is the data on the 803t I tested out today:


PHR-803T Diode #1

Current: Aixiz Glass Lens: Raw output:
40mA Lasing threshold
50mA 1mw 7mw
60mA 8mw 25mw
70mA 21mw 40mw
80mA 37mw 59mw
90mA 50mw 74mw
100mA 59mw 86mw
110mA 67mw 102mw
*120mA 78mw 116mw
130mA 85mw 126mw
140mA 91mw 134mw
150mA 88mw 134mw
160mA 96mw 144mw
170mA 103mw 152mw
180mA 112mw 171mw
190mA 117mw 180mw
200mA 132mw 195mw
210mA 144mw 218mw
220mA 166mw 234mw
230mA 167mw 243mw
240mA 178mw 270mw
250mA 205mw 299mw
260mA 207mw 318mw
270mA 208mw 330mw
280mA 213mw 327mw
290mA 205mw 305mw
300mA 219mw 317mw
310mA 234mw 355mw
320mA LED! LED!


I figured 805 diode #2 is about 16% more output at 120mA with it's 134mw raw output. Tweak an 805 up to 130-140mA and you've got yourself roughly a 4x blu-ray my friend . That 803t diode in the Blu-M heat sink was getting toasty above 130mA and quite hot once I surpassed 200mA, had to pause several times to allow my HAND to cool down

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Old 04-21-2011, 09:26 AM #21
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

I don't get it.
Are you saying you fed up to ~300ma to a PHR-803, getting ~300mW of optical output power?
I will do another graph if you like, but it is as easy as marking the data, finding the
"create graph" dialog and stepping through the wizard....
Creating a chart - OpenOffice.org Wiki
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Old 04-21-2011, 12:47 PM #22
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

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I don't get it.
Are you saying you fed up to ~300ma to a PHR-803, getting ~300mW of optical output power?
I will do another graph if you like, but it is as easy as marking the data, finding the
"create graph" dialog and stepping through the wizard....
Creating a chart - OpenOffice.org Wiki
I used a multimeter checking the current the entire time, and the power supply also displayed that same current, and measured the output using the same LPM. I'm sure this may have been a freak 803 diode or an anomaly if you will (maybe someone gave me a 6x instead? lol), keep in mind the thing was blazing hot when I got to 200mA. We're only talking about a total run time of maybe 10 minutes or so to complete the test. Not really a long life. I haven't read every post on LPF but I'm sure this can't be the first time this has happened with a PHR-803t, right? Keep in mind there were a few "kinks" in that power curve along the way to 320mA, which from what I understand these mean the diode is in trouble and you should never leave it set above the "kink."
I ran a 445nm up to 3amps once and it LED'd, then, when I got below 2 amps it lased again. It is still "somewhat" alive even right now, I can feed 1 amp into and get 200-300mw output for a short time then it goes dim again. Odd diode indeed.
On the graph thing, I tried it out, after selecting the data the resulting graph is blank. I haven't been to school for excel or other spreadsheet software usage, but I am fairly competent in computer usage. I'll look at it again and try once more...

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Old 04-21-2011, 05:43 PM #23
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

there was another member that had a mutant 803. but it didn' last long. nice testing cliff. but one thing i see you didn't test was the life span. any diode can get pushed and look good for a test. but what current can these live at?

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Old 04-21-2011, 05:55 PM #24
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

I agree Chip, I didn't perform a lifespan test. I have 3 more 805's here, only I don't have a simple way to perform a lifespan test aside from setting it at one current (say 120-140mA?) and leaving it one for an hour or so at a time, and track the on time. If I had a huge heat sink, TEC or fan on it and could monitor temperature, maybe this would fine. I know some of the guys here have some really nice set ups that can do some neat testing of lifespans... with the basic equipment I have, what would be a good way to test lifespan, say, using a Blu-M heat sink, I could set up a fan on it to keep it cool... I want the data to be accurate for all, I have no problem killing a couple more diodes for science.
Maybe I'll have to just test a couple this way at the one current to see - but if it lasts hundreds of hours it may take a while...

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Old 04-21-2011, 05:58 PM #25
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

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I have no problem killing a couple more diodes for science.

ESPECIALLY when you they will be replaced, once that idiot StoneTek guy remembers to send you MORE ! HAHAHAHAHAHAHA !!
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Old 04-21-2011, 05:59 PM #26
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

since it would be mostly used in pointers closer to real conditons the better. so i would say no to a large heat sink and tec and yes to a little heat sink at room temp.

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Old 04-21-2011, 06:10 PM #27
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

Thanks for the input Chip, it's good to get a few other's thoughts on things before the killing begins.... I'm still on free diode #3 of 5 so I would have to say you've been MORE than accommodating Greg! I'd gladly $BUY$ many more after I kill off the last ones I have... I'm curiuous about these new diodes as anyone, it would be nice if we could run them and they lasted a hundred or so hours at 140mA....
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Old 04-21-2011, 06:12 PM #28
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

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Thanks for the input Chip, it's good to get a few other's thoughts on things before the killing begins.... I'm still on free diode #3 of 5 so I would have to say you've been MORE than accommodating Greg! I'd gladly $BUY$ many more after I kill off the last ones I have... I'm curiuous about these new diodes as anyone, it would be nice if we could run them and they lasted a hundred or so hours at 140mA....

With little ones in the house, I would be reluctant to ask you to run them unattended THAT would be bad - pure and simple ! Just be careful, in the name of science, or any other name !
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Old 04-21-2011, 06:49 PM #29
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

Now a days all my laser hi-jinks takes place in my shed outside, locked from the little one. Remember Wile E. Coyote's little shop he worked in on all his anti-Road Runner devices and concoctions? That's my shed
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Old 04-21-2011, 06:55 PM #30
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

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Now a days all my laser hi-jinks takes place in my shed outside, locked from the little one. Remember Wile E. Coyote's little shop he worked in on all his anti-Road Runner devices and concoctions? That's my shed
WHEW ! Now, the Padawan becomes the Master....


THAT is good to hear ! NOT that I doubted for a second, your safety ethics - it's just that sometimes folks forget, etc....My "little ones" are 27, and almost 19.....so I have stuff running ALL the time, especially since the 27 year old is out of the house, things are safe.... hehehehehe ! I STILL have to do arial beam shots, though - as we have some "spare cats" that inhabit my garage (I trapped them, and got them fixed, shots, etc...) and they LOVE to get in the way of EVERYTHING ! When the blig (and STOOOOOPID !) orange one started to look interested in the 25Watt blue beam from my last projector, I had to yell at it awfully loud
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Old 04-21-2011, 07:10 PM #31
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

i also don't doubt your safety practice but to be on the side of cautious i will say that since you are in a shed (wood i assume) that you should use a beam dump if you plan on doing any life span testing.

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Old 04-21-2011, 07:33 PM #32
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Default Re: PHR-805 405nm diodes, replace PHR-803t's

You mean one of those carbon beam terminator thingys? Probably wouldn't be a bad idea, my shed IS wood framed - (built it myself), and hours of hot laser light hitting it might not be good - of course I wouldn't have the beam focused tight for that kind of test. Still not a bad idea....
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LinkBack to this Thread: https://laserpointerforums.com/f38/phr-805-405nm-diodes-replace-phr-803t-s-62591.html
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PHR-805t - Lasers Wiki This thread Refback 01-18-2014 07:02 PM
PHR-805T 405nm laser diode - $10.99 : Cajunlasers Store This thread Refback 03-04-2013 06:01 PM
PHR-805T 405nm laser diode ***(5 PACK)*** [PHR5PK] - $40.99 : Cajunlasers Store This thread Refback 10-02-2012 07:16 PM
PHR-805T 405nm laser diode (5 PACK) [PHR5PK] - $40.99 : Cajunlasers Store This thread Refback 08-06-2012 01:15 PM
PHR-805T 405nm laser diode (5 PACK) [PHR5PK] - $44.99 : Cajunlasers Store This thread Refback 05-17-2012 02:59 PM
PHR-805T 405nm laser diode [805T] - $10.99 : Cajunlasers Store This thread Refback 03-30-2012 07:28 PM
PHR-805T 405nm laser diode [805T] - $9.99 : Cajunlasers Store This thread Refback 08-18-2011 05:28 AM
























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