[SALE ENDED] EXTRA LEDs (Osram, SST-20, LH351D, XHP35/70, 219C, etc)

Reserved. When the LEDs come in i’ll test and PM you Friday.

Cheers!

Thanks guys for your efforts, much appreciated. It should work like this, I’m expecting also LEDs from azhu who sent it already this way to me. Anyway, I take the risk if lost in transit.

The 3500K LEDs arrived and I picked 3 from the middle, I put them in a brand new FW3A for a more real world test:

I’m comparing it to a SST-20 FW3A with a UCL lens (so best case no green AR coating skew). I chose this because a lot of people should have this light and many comments say it’s generally a good LED.

FW3A LH351D 3500K (Lumintop Optic)
CCT = 3518K (Duv 0.0022) - 3rd step
CCT = 3561K (Duv 0.0017) - max 7135
CCT = 3583K (Duv 0.0011) turbo

FW3A SST-20 (UCL glass, 10511)
CCT = 3868K (Duv 0.0021) - 3rd step
CCT = 3985K (Duv 0.0017) - max 7135
CCT = 3902K (Duv 0.0004) turbo

This actually surprised me a little. I didn’t expect the LH351D to get so low in DUV with the higher amps. I only tested up to 1.5A in my previous test so did not know for sure. In summary, it’s slightly above Duv with the 7135’s and gets even more “rosy” looking than the SST-20 on turbo. Of course the LH351D is 300-400K CCT warmer.

Any idea how the output of the two FW3A’s at max 7135 compares?

Will test this later tonight and get back to you. I also ordered a few of Digi-Key’s 5000K 90CRI (dog farts) since all mine were from Arrow it turned out. I have those to test as well.

SST-20 ~700
LH351D ~815

It’s actually kind of hard to measure cause these things step down before it even settles down. Also the SST-20 has UCL lens vs the Lumintop optic so add/subtract a few more percent there

Thanks for doing this. I would like to buy some if you can sell them on mcpcb and shaved dome.

Send me a PM with what PCB type you want and I will let you know what brand/quantity I have

Thanks for the output numbers, the difference is not enormous when regulated at the same current. But I like that 3500K so I’m sure that the leds that I will get from you will end up somewhere nice :slight_smile:

All orders shipped, still have more LEDs. Maybe 35 or 40 left of the 3500K

If anyone is feeling adventurous here is what the LEDs do when sliced:

S2+ light OP reflector, low to high (5-6A):

CCT = 3215K (Duv –0.0001)
CCT = 3247K (Duv –0.0002)
CCT = 3288K (Duv –0.0007)
CCT = 3332K (Duv –0.0030)

That is not much CCT shift. They do land nicely on top of the BBL :slight_smile:

Just curious has anyone tested how shaving affects the amount of blue light output? I’m guessing since you are only cutting off the transparent silicone and not really removing the phosphor, the amount of blue light emitted shouldn’t change much but just wonder if anyone knows.

The domed shape of silicone is essential for the function, makes sure that as many as possible photons hit the surface close to perpendicular to it, so that internal reflection is minimised and thus photon extraction maximised.

When the dome is shaved off, the surface is flat and much more internal reflection occurs, photon extraction decreases, and also more photons have an extra chance of hitting the phosfor. Especially the blue photons are absorbed by the phosfor and converted to photons of longer wavelength.

The result is that overall a bit less light exits the led, a reduction of the blue peak and increase of green and red.

:+1: thanks for the detailed explanation!

I installed the LH351D 3500k this past weekend in one of the FW3A’s I have and I must say this is a really nice led. Even with a narrow optic, the beam is a little wide. It adds a wonderful warm glow to everything and really is nice in the outdoors.

Good reasoning djozz.

I’m going to reserve the remaining 3500K LEDs for my own stash and one last potential buyer.

If people still want more you can certainly post your interest here and I may buy another 100x if there is demand but it seems like people are not so interested in LH351D compared to 5 year old 219B LED, lol. Alternatively, US buyers can buy from DigiKey for the higher cost per LED+shipping. Wasn’t out to make money just wanted more people to try a good LED :slight_smile:

The other random LEDs are still available and I am willing to do envelope shipping world wide.

Can I still buy some of the 3500K LH351D LED’s? Maybe 10x? I don’t mind paying more for international shipping. I think I paid around $13 the few times I bought LED’s from azhu.