LH351D 5000K ,LH351B 3000K .GB . price drop.

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BlueSwordM
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The only one I’ve found is the XP-E in the far red spectrum:
https://www.mouser.ca/ProductDetail/Cree-Inc/XPEFAR-L1-0000-00701?qs=Rt6...

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Barkuti
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Lux-Perpetua wrote:

Has anyone tested the LH351C yet in comparison to 351B and 351D?

Cheers

Thomas

The LH351C is more or less in a middle ground between those two, maybe closer to the LH351B:

Samsung LH351C 5000 K CRI90 color and output test by maukka.

 

Smile 

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@ BlueSwordM

Yes, that one I found, too but I'm wondering why Cree states order codes for the XP-E2 far red and photo red but these are nowhere to get.

@ Barkuti

Alright, gracias! The 351D 4000K 70CRI with a top flux binning and same great characteristics as 351D 5000K 70CRI W6 would be a dream to come true. Big Smile I'm sure that one would also sell great even without HighCRI but instead with tremendous high current capabilities. Just thinking of a D4S with 2x 4000K 70CRI and 2x 5000K 70CRI for a great neutralwhite 4500K beam and 5000+ lumens.

 

On a side note:

I really really like BLF but working with quotes in the text editor is a real nightmare. No matter what I try when quoting something, it all ends up as an entire quote with my reply....aaaaarrrrghhh. yell

adam7027
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Lux-Perpetua wrote:

@ BlueSwordM

Yes, that one I found, too but I'm wondering why Cree states order codes for the XP-E2 far red and photo red but these are nowhere to get.

There is also Deep Red (~660nm) and Far Red (~730nm) from Luminus (they can be driven to 1.5A as the doc says, maybe a bit above that), but that needs a different soldering mask, as the contacts are not in a 3.25mm sided square area as the SST-20W has them, but 2.7mm, so I don't know, where one could get a board, which fits that.

Barkuti
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adam7027
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Barkuti wrote:

Check Led4Power's catalog adam7027, they have some alternative smaller layout MCPCBs:

 

Oh, really, I forgot about those smile

iamlucky13
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Lux-Perpetua wrote:
Currently, I’m looking for a reliable source to buy XP-E2 photo red (650-670nm) and XP-E2 far red (720-740nm) but I’m unsuccessful to find a seller.

Mountain Electronics has the older 660nm XP-E, and I believe they ship internationally:
http://www.mtnelectronics.com/index.php?route=product/category&path=60_78

In case you don’t already have this info from the datasheets, these should be the relevant prefixes to search for XP-E and XP-E2 respectively:

XPERDO = Red-Orange (610-620nm)
XPERED = Red (620-630nm)
XPEEPR = High Efficiency Photo Red (650-670nm)
XPEFAR = Far Red (720-740nm)

XPEBRO = Gen 2 Red-Orange (610-620nm)
XPEBRD = Gen 2 Red (620-630nm)
XPEBPR = Gen 2 Photo Red (650-670nm)
XPEBFR = Gen 2 Far Red (720-740nm)

It looks like 1st gen XP-E is a lot easier to find, even though I think they’re discontinued by Cree.

I did turn up the following XP-E2 links from Cutter, but I don’t know where they ship:
https://www.cutter.com.au/product/xpebfr-l1-0000-00901/
https://www.cutter.com.au/product/xpebrd-l1-0000-00901/

This link for some reason has the photo red part number, but lists the far red wavelength:
https://www.cutter.com.au/product/xpebpr-l1-0000-00d01/

AEDe
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Price drop for remaining 351D 5000K. 1.6$/pcs 1-9pcs, 1.5$/pcs >10pcs.

djozz
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Because it is discussed here, I read on the Cree site that they updated the 660nm and 720nm XP-E’s, with improved output.
https://www.cree.com/

Lux-Perpetua
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Thanks for the information Jos! Thumbs Up @AEDe: I hope you don't mind my intervention into your Samsung LED thread as this is about a totally different LED, not offered by you or e-neon. I don't mean to derail this groupbuy thread even though I admit I already did....sorry! Facepalm Facepalm Facepalm Just one quick supplemental...

MRsDNF, a very helpful and friendly BLF member from Australia helped me to figure out what Cutter has on stock. In the first place there were some mistakes on Cutter's website but thanks to MRsDNF and Mark (Cutter) it has all been sorted. They seem to have the latest revisions of XP-E2 photo red (now called "deep red") with 660nm wavelength and XP-E2 far red with 730nm wavelength. I.a.w. the bin codes these seem to be top rank bins.

The order links are:

 

XP-E2 Far Red (730nm)

https://www.cutter.com.au/product/xpebfr-l1-0000-00901/

XP-E2 Photo/Deep Red (660nm)

https://www.cutter.com.au/product/xpebpr-l1-0000-00d01/

 

Maybe this could be a nice "add-on" for those who want to order the 3V XHP50.2 from Cutter?

Lux-Perpetua
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I'd like to share some beamshots / whitewall-shots of modified Sofirn C8F lights. These were equipped with Samsung LH351D / LH351B emitters bought from Andrey ("AEDe"). Once again, Большое спасибо for these wonderful LEDs, Andrey!  Beer All pictures were shot on iPhone 6S with manual settings. If you have any suggestions how to improve the beam quality comparison between those beamshots, I'd be glad to hear about it. My photography skills are very limited so far.

Distance to whitewall: 1m

Mode setting C8F: mode group 2, level 2 (700lm)

Aperture: f/2.2

Shutter speed: 1/125s

ISO: 100

White balance: automatic

Autofocus: automatic

 

LH351D 5000K 90CRI

LH351D 5000K 70CRI (W6 Flux Bin)

LH351D 4000K 90CRI

LH351B 3000K 90CRI


LH351B 2200K 80CRI

 

Cheers,

Thomas

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Thanks Thomas for beamshots! Could you make one more with all of them simultaneously and in the same mode?

Lux-Perpetua
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Yes, I think that should be feasible but it might take a couple of days until I get to it. Wink

Tom E
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Nice pics! Those 5000K's look the worse to me as far as inconsistency. I got 3500k's in a few lights.

Do you feel these pics represent what you see?

Lux-Perpetua
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As far as the rendition is concerned, yes – the pics reflect quite well what I saw with my own eyes. I agree that the LH351D 5000K 70CRI appears quite similar to the XP-L2 “fried egg” beam (yellow corona, blueish rim in the outer spill) but once you reach a distance of let’s say at least 3 meters you won’t recognize it anymore. From a farther distance both 5000K 70CRI and 90CRI looked the same on a white wall. It might has something to do with the SMO reflector in combination with the LH351D but I can’t tell for sure. I guess Djozz once tested the LH351D in a Convoy C8 with SMO and reported something similar.

Personally, I prefer the 4000K 90CRI most or – even better – a quad of 2× 4000K 70CRI / 2× 5000K 70CRI would be just perfect to gain a 4.500K beam profile with best efficiency (e.g. in an Emisar D4S or a P60 quad pill). Unfortunately, the 90CRI has less output than the 70CRI.

If you’re a fan of incandescent light, the LH351B 2.200K 80CRI is just fine. You get about 1,900 lumens on turbo with three of these emitters in the C8F 21700. Another benefit of the LH351B is its small die size, resulting in a more concentrated spot (= better throw).

Tom E
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I prefer the 4000K range myself, but the 3500K SST-20's are looking ok to me so far, and I've been using an EDC, SWM C20C, with triple XPL HI 2700K's with a nice incandescent feel that I like in this light. Few years back I recall comparing indoor looks at first a 3C/3D, then 4D, then 5D, and it just got better and better, but if I went to a 7A/7B level, it was too much, and my preferences are still there.

 

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Lux-Perpetua wrote:

LH351B 3000K 90CRI


LH351B 2200K 80CRI

 

Cheers,

Thomas

Thomas, unless you are doing “something” else in these cases, I am pretty sure you may be overdriving to some extent the LH351B emitters in such host. Don't you think?

Oh! Well, I see the 21700-C8F's output isn't as impressive (versus 18650-C8F).

Thanks for sharing.

 

Party 

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Barkuti wrote:

Thomas, unless you are doing “something” else in these cases, I am pretty sure you may be overdriving to some extent the LH351B emitters in such host. Don't you think?

Oh! Well, I see the 21700-C8F's output isn't as impressive (versus 18650-C8F).

Thanks for sharing.

Party 

 

Hola Barkuti,

FWIW, the C8F-21700 FET-driver is somehow limited or at least not as powerful as other FET drivers. It's quite hard to override a certain "threshold" of about 10A with this driver. Even with a Samsung 30T/40T you will not get that much above it. In terms of the LH351B it appears it can easily sustain a current of 3 - 3.5A, even though it's supposed to be driven to Imax = 1.5A i.a.w. the datasheet. Using the Sofirn brand battery (which appears to be a Lishen LR2170SA cell) the current for all three emitters is probably 9A or less.

AEDe
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Now price of 351D 90cri. 1.5$/pcs

id30209
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I’ll take 6 EA 351D 5000K.
Intl shipping.
Can you pls send me a PM with payment details?

Thx

WTB Titanium 4sevens Quarks & Jetbeam TCR1

syracuse
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I’d like to take 10 EA 351D 5000K.
Intl shipping.
Please send me a PM with payment details too.
Thanks.

id30209
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Got the package, 5000K installed and i’m AWE
That being said i’d like 10 more of 351D 5000K 90CRI
PM coming

WTB Titanium 4sevens Quarks & Jetbeam TCR1

Skylight
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Hi AEDe, do you plan to buy some more LH351D 4000K 90 CRI?

Always looking for: used or damaged flashlights for repair and MODDING

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Olight mods! So I put a LH351D 4000K 90CRI in my S1R Baton II, and LH351D 5000K 90 CRI in my S2R Baton 2. These perform really well with the stock optics! I will actually EDC some of my Olights now…

Astrolux MF01 Mini, BLF Q8, BLF A6, BLF FW3A, BLF FW3C, Convoy L6, Convoy C8+ , Convoy S3, Convoy M21A, Convoy S11, Emisar D4, Fireflies E07, Jaxman E2L, Lumintop EDC18, Manta Ray C8.2 long version, Olight S1R Baton II special edition series, S2R Baton II, Nitecore HC65, Olight H1R Nova.

https://photos.app.goo.gl/JaJaDv4V838AEJf39

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Has anyone tried a single LH351D in direct drive? I’m planning running a sliced dome 5000K on a Bistro FET+6+1 TA driver. The Vf is not that low so I hope it will be OK to blast a few FET turbo runs now and then.

Astrolux MF01 Mini, BLF Q8, BLF A6, BLF FW3A, BLF FW3C, Convoy L6, Convoy C8+ , Convoy S3, Convoy M21A, Convoy S11, Emisar D4, Fireflies E07, Jaxman E2L, Lumintop EDC18, Manta Ray C8.2 long version, Olight S1R Baton II special edition series, S2R Baton II, Nitecore HC65, Olight H1R Nova.

https://photos.app.goo.gl/JaJaDv4V838AEJf39

id30209
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AEDe once you get back from vacation i would need 10× 351D 5000k 90CRI and some other emitters.
Send me PM when you can.

Thx

WTB Titanium 4sevens Quarks & Jetbeam TCR1

contactcr
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AEDe, have you used sectrophotometer on latest 5000K batch? What were the results?

Also, can you check with e-neon and see what 4000K bin they have or are you not interested in selling those anymore?

contactcr
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contactcr wrote:
AEDe, have you used sectrophotometer on latest 5000K batch? What were the results?

Also, can you check with e-neon and see what 4000K bin they have or are you not interested in selling those anymore?

Still interested in the answer to this if you have more stock

Madtoffel
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I would take another ten 5000K cri 90 Leds if they are still in stock.

FBsLights
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I would like (15) of the:
351D 5000K 90cri tint F2R1S2

Thanks,
FB

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