Anyone else notice that Nichia's 445 spec sheet got a power boost last month?

[rhd]

http://www.nichia.com/specification/en/product/ld/NDB7875-E.pdf

Absolute Maximum Current: 1.7A
Optical Power Output: Min 1.1W Max 1.6W

Still under what we typically see, but not by much. A considerable improvement given that their datasheet used to state a max of 1W output.

 

[Jacob32123]

Are we sure that that is the right diode, it says 9.0mm in the spec sheet :thinking:

 

[ARG]

Are we sure that that is the right diode, it says 9.0mm in the spec sheet :thinking:

I believe most of the new 445 diodes being developed are a 9mm can.

 

[rhd]

Are we sure that that is the right diode, it says 9.0mm in the spec sheet :thinking:

Nope, but it's the closest we have in terms of Nichia releasing a datasheet for our 445s. I think the presumption has been that it's the correct diode, but that KasEO had the 5.6mm case substituted (which I presume you can do when you're ordering 8 gajillion diodes at once)

 

[Garoq]

Very interesting, thanks for posting the link. I notice that this version does not have a case pin and has some sort of static protection built in.

 

[rhd]

Very interesting, thanks for posting the link. I notice that this version does not have a case pin and has some sort of static protection built in.

Good eye!

Look at me, selectively paying attention only to power. What a rookie move!

Given that KasEO doesn't use the case pin, it wouldn't shock me to see our 445s lose this feature in the future.

 

[blrock]

If these are rated higher than the 5.6mm we use, we can probably push them to 3W!

 

[Garoq]

If these are rated higher than the 5.6mm we use, we can probably push them to 3W!

Good observation, unless these are basically the same as we currently use and they have realized over time that they can be pushed a bit harder.

 

[jnhowett]

So either they updated their info on the diodes that we currently are using because of our experimenting with them OR they have a new really powerful 445 diode.

 

[Garoq]

So either they updated their info on the diodes that we currently are using because of our experimenting with them OR they have a new really powerful 445 diode.

Seeing as they're claiming 1.6W optical output with 1.7A current, my guess is that they're essentially the same.

 

[fixitiwill]

After reading the OP I thought something sounded very familiar here. I just remembered I read a thread at PL about this very same diode. Here is a link so since there is no such thing as too much knowledge.
Any interest in 1,6W 445nm NDB7875 Nichia diode?

 

[Blord]

9mm diode shouldn't be a problem. Pontiacg5 makes 9mm Aixiz replacement modules. We could use the existing heatsinks made for the standard Aixiz module.

 

[fixitiwill]

Yeah, price might still be bit of an issue.

 

[foulmist]

divergence seems to be even worse than 5.6mm ones :thinking:

 

[rhd]

divergence seems to be even worse than 5.6mm ones :thinking:

Actually, it's better.

The old ones were 12x40.

These new ones are 14x44.

IE, the ratio of divergence of one axis to the other is closer to 1.

 

[foulmist]

aaaah I see thanks for clarifying that :beer:
well but it's not much of a difference anyway

and with these prices for small quantities I think it's better to stick with
the current 5.6mm diodes :yh: