PHR-803T sled or the DT0811 sled?

Hi i have herd a lot about the PHR-803T and the DT0811 diodes from the Xbox HD drive but i have some questions ?

Firstly - How do you tell the difference or which ones which until you take them apart

Secondly - What is the difference ? I have herd the 803T is the one to go with for power reasons but this is my first bluray laser and only my second ever laser build and i have a budget and i only want 80mW or so and the DT0811 is capable of that right ? :-?

Thirdly - If the DT0811 is capable of 80mW Would you recomend or should i stop wanting to be different and stick with the 803T

BTW - If someone was to sell me a bluray would a DT0811 be cheaper than a 803T ?

Thanks Jamie

1: as far as I know there is no way of knowing what diode it contains until you take it apart.
2: the 803t is much more powerful.. the 811's haven't been as extensively tested, but I think you can get 40mW or so out of them.
3: "Would you recomend or shut i stop wanting to" - syntax error, does not compute.
4: no, it would not be cheaper.. the drives cost the same. maybe someone would be willing to sell one cheaper if they bought a bunch of drives and only half turned out to be 803t's or something, but it's not really likely, since as I said, the drives cost the same amount regardless what diode is in them. Either way it's a pretty good deal seeing as some places are still selling 5mW blurays for $2000.
I would try to get an 803t if you can.. if you're not comfortable with extra power you can always run it at a lower current... as a side effect an 803t will last a lot longer at 80mW.

ok thanks i did not know that there was such a big difference in power

Thanks Jamie

oh yeah, massive difference.

it's been widely speculated that these are surplus bluray *burner* diodes which didn't meet quality specifications for burners, so they're being used at like 1% of their power in readers.

the only other way to get violet diodes this powerful is by taking apart $300+ burners or by shelling out about $4000 apiece for them from manufacturers... these 803t's are an incredible deal, which is why they're running out so quickly... and once they're gone, they're likely gone for good.

pseudolobster said:

1: as far as I know there is no way of knowing what diode it contains until you take it apart.
2: the 803t is much more powerful.. the 811's haven't been as extensively tested, but I think you can get 40mW or so out of them.
3: "Would you recomend or shut i stop wanting to" - syntax error, does not compute.
4: no, it would not be cheaper.. the drives cost the same. maybe someone would be willing to sell one cheaper if they bought a bunch of drives and only half turned out to be 803t's or something, but it's not really likely, since as I said, the drives cost the same amount regardless what diode is in them. Either way it's a pretty good deal seeing as some places are still selling 5mW blurays for $2000.
I would try to get an 803t if you can.. if you're not comfortable with extra power you can always run it at a lower current... as a side effect an 803t will last a lot longer at 80mW.

Click to expand...

1) When taking an XBox 360 HD DVD Add-on unit apart for the diode, you cannot tell until you remove the drive from the plastic case. The "label" with the information on it is on the side that is "under" the part of the case that screws on. You can remove the back and "top" without unscrewing stuff, but to see the other side of the drive, you have to remove four screws. They are either a small allen wrench or a torx screw. I'm not sure because I just snip off the plastic legs with side cutters. I'm not planning on putting them back together Once you have the drive removed you can tell. Ver 000 = PHR-803T. Ver 100 = DT-0811.

2) The DT-0811 diode is capable of mid 80's mW output. This was the result of about 135mA input. It has been tested as high as 142mA, but the power dropped off significantly at that point so the test was terminated.

3) The DT-0811 is fine if you are only looking for less than 90mW.

4) Both sleds and DVD players cost the same, so the diode "costs" the same. Pseudo is probably correct with his assessment.

Peace,
dave

Thanks for the help
If i got the DT0811 diode and ran it at 80mW would it shorten the life of the diode because it is running high for that diode.

Thanks jamie

jamie.91 said:

Thanks for the help
If i got the DT0811 diode and ran it at 80mW would it shorten the life of the diode because it is running high for that diode.

Thanks jamie

Click to expand...

I don't know anyone that has done any "long term" tests with it. Most of us are focused on the 803t right now. However, you should get 80mW at about 125mA input. That's about 10% under the tested maximum input. That should allow the diode to live a long life.

Keep in mind, these are NOT well tested at the input levels we use. Your mileage may vary

Peace,
dave

Thanks for the great help

much appreciated

thanks jamie

jamie.91 said:

Thanks for the great help

much appreciated

thanks jamie

Click to expand...

You are very welcome.

Peace,
dave

i just got done taking apart 3 of the hd-dvd drives and 2 of the 3 had the dt0811 sleds and 1 had the phr803t sled in it. all the info on the labels was the same(toshiba model sd-s802a)

there was a difference on the label of the drive. theres a spot where it lists the version of the drive and next to that is the rom version. the phr-803t came from the 000 version while the dt0811 came from the 100 version(rom versions were the same).

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