803T Diode "killing point?" and mW@high mA

[Glaserfan]

Ok here goes... I know we have a few threads dicussing what current to safely run these at, BUT I see quite a bit of different conflicting opinions and experiments going on with these.

Here is my question for anyone that has driven these way high(>120mA). At what point did the diode die? Also, did anyone get some power readings with these driven so high to see if it's even worth trying? Drlava's graph stops at 120mA.. IF the output rises according to the last 10mA or so worth of the graph, an 803T@150mA could output ~140mW

The reason I ask is that I just hooked one up(no host yet) @ 125mA with an adjustable rkcstr driver.. quite a difference over my 100mA build! I am thinking of cranking it up to the 140-150mA range. Has anyone killed one under 150mA(without a different mistake causing it)?

Heat on mine isn't bad after 1 minute in just the AiXiZ nut, but I will be definitely heatsinking this one for good measure

I figured a thread dedicated to the "top" range of these diodes could be useful [smiley=thumbsup.gif]

 

[apex007]

A comprehensive bluray diode data thread sticky at the top of this board would be awesome.

 

[GooeyGus]

I had one die after just a few seconds at 145. Yours may last longer, but not much.

 

[Glaserfan]

Must be I am lucky then.. I cranked the pot on the driver(Reads 151mA at the positve battery terminal), and have run it for about 20 mins total with no problems.. Heats up a bit just in the AiXiZ nut, though, so no more than 1 minute or so at a time...

I'll probably turn it back down to 125mA though...

 

[TheMonk]

I ran one of my 803T to 200mA and the output was 200mW without lens.

No sure how hurt my Diode must felt. ;D

 

[Glaserfan]

 

[styropyro]

I ran one of my 803T to 200mA and the output was 200mW without lens.

No sure how hurt my Diode must felt. ;D

200mW??? That is amazing, I can't believe the power we are getting from these reader diodes!

 

[Glaserfan]

That makes me wonder if the PHR-803T sled was actually used in 2x HD-DVD burners....

 

[heruursciences]

FWIW i tested one to to destruction for S&G's it made about 228mW!!!! :-? at about 211mA at 25 deg C and then poof!

The ABSOLUTE maximum safe current is usually 60 to 75% of kill current or about 125 to 160mA. Therefore anything of 120 or less should keep your LD happy for a nice long time!

 

[Timbojames]

@ Glaserfan

This diode is used in 2,4x HD DVD burners from Toshiba according to the data on geeks.com

 

[Glaserfan]

Cool! Although that makes other sources much more expensive LOL..

I have done plenty of testing @150mA, and this diode seems happy, except for needing minor heatsinking I think when I finally get my host and batteries for it, I'll keep it at 150 The difference between my 803T pointer @100mA and this one @150mA is quite amazing

For any that I build and sell, though, I think I will stick to 110mA for an 803T and 125mA for a DT0811. That is unless the buyer wants to assume all risks with one at higher mA.

 

[heruursciences]

I think i figured out which diode is in the PHR head... Sharp - GH04P21A2GE. It's specs are practically identical- everything from the pin-out to the lambda shift! It's rated at 100mw CW and 210mw pulsed.


The other head has a DL-5146-351 or similar diode rated 20mw but capable of roughly double that.

 

[Glaserfan]

WOW- over $1,100 for one at Digi-KeY!. If that is it, we are getting some major awesome deals on them ;D

Good news for me is that if the 803T is in fact the GH04P21A2GE, 150mA is an acceptable current!

 

[Glaserfan]

The 0811 diode seems to match the Sanyo DL-7146-101S a little better... Which I hope is true because again that would match my chosen current for my 0811-based pointer

 

[JLSE]

I think i figured out which diode is in the PHR head...  Sharp - GH04P21A2GE. It's specs are practically identical- everything from the pin-out to the lambda shift! It's rated at 100mw CW and 210mw pulsed.


The other head has a DL-5146-351 or similar diode rated 20mw but capable of roughly double that.

You Rock! thats a nice needle you found in the haystack

 

[Glaserfan]

I have to agree there! ;D