3 volt XHP50.2

pennzy · 2021-03-18T22:45:32.000Z

Bourbon Guy:

Cutter has 3B (~5000k).

https://www.cutter.com.au/product/xhp50b-00-0000-0a00j4051/

Shipping to US is a killer.

Bourbon_Guy · 2021-03-18T22:48:22.000Z

pennzy:

Bourbon Guy:

Cutter has 3B (~5000k).

XHP50B-00-0000-0A00J4051 XHP50 IN 3 VOLT - Cutter Electronics

Shipping to US is a killer.

Agreed. I had them in my cart for weeks and just couldn’t bring myself to do it. They are available though.

skinny_tie · 2021-03-20T07:31:54.000Z

MoreLumens:

Let’s be real. How much would be shipping from Australia to Finland with just a regular envelope or something like that? Any Australians that could help me out here?

A$3.70 for an economy air letter, or $17.70 for a registered letter. 25+ days delivery, no tracking, and technically only printed material allowed.

A$29.40 for a small parcel up to 500g. 9-15 days delivery with tracking.

auspost.com.au

Postage calculator & delivery times - Australia Post

Calculate postage costs and estimate delivery times. Compare postage costs or find out when your delivery should arrive.

Edit: Postage from Cutter within Australia is A$15.90, so the minimum cost to have something posted by another BLF member would be A$19.60, approximately €12.75.

id30209 · 2021-03-21T18:06:50.000Z

MoreLumens:

Skylight:

The lowest tint I know of is 1D which is around 6000-6300K.

What happens if you slice that? Lower tint, maybe? And a bit more throw like with every sliced led?

I have one sliced. See gallery here

Nooner · 2021-03-25T00:20:29.000Z

For those interested in 5000K it appears Sofirn is selling it.
https://sofirnlight.com/xhp5023v-p0060.html

id30209 · 2021-03-25T02:07:10.000Z

Nooner:

For those interested in 5000K it appears Sofirn is selling it. https://sofirnlight.com/xhp5023v-p0060.html

QTY0

Nooner · 2021-03-25T10:09:27.000Z

I ordered 4. Will have to wait and see what actually arrives.

Rat · 2021-03-25T13:29:19.000Z

e1000:

If anyone has any reservations from ordering from Cutter because they’re in Australia, I can attest that there is no reason to worry. Recently put an order in for some 3B0 (5400K) 3v XHP 50.2’s from Cutter. Had a small problem and Mark stepped in to quickly correct it for me. VERY reasonable shipping to the US, I would definitely buy again.

Otherwise, these 3V emitters are great, just wish we could find them in 4000K!

How did you find your 3B0 (5400K) LEDs from cutters did you also get that yellow green shift in lower settings like KawiBoy1428 did?

thx

e1000 · 2021-03-25T14:05:09.000Z

[quote=Rat]

e1000:

How did you find your 3B0 (5400K) LEDs from cutters did you also get that yellow green shift in lower settings like KawiBoy1428 did?

thx

They are what they are, I very much prefer high CRI emitters in the 4000K range, so these definitely have some coloration that isn’t ideal, both in lower settings, and with the reflector I’m using (stock OP S2+), the spill is very blue/purple. I suspect using a reflector or optic that’s designed more for a emitter the size of a XHP50.2 would perform better however.

With that said, these things are screamers. If you just want an obscene amount of lumens, one of these paired with a FET driver and a high current cell is a really easy way to get a lot of output.

Tom_E · 2021-03-25T14:24:51.000Z

Nooner:

I ordered 4. Will have to wait and see what actually arrives.

From Sofirn? Were they in stock when you ordered? Shows zero now. Only stock ones are 6500K.

Once again the Cutter listing is sketchy. If you order them, it shows in the cart: "3B0" and 5400K. I can't find "3B0" in the datasheet, only 3B, and 3B is listed as 5000K. I don't think I've ever seen a LED from Cutter consistently, correctly listed -- ever, and I've placed a few orders over the years. However I must say I've always gotten what I thought I'd get -- it's maddening to say the least.

I would absolutely not trust Sofirn for ordering LED's - when the 5000K's were actually shown in stock and I ordered them, instead I received 5700K's. Others reported the same thing. Definite not a trustworthy source for LED's.

Unheard · 2021-03-25T17:05:43.000Z

Nooner:

I ordered 4. Will have to wait and see what actually arrives.

They’re out of stock at Sofirn since a really long time. Had some on order last year but cancelled a few months later.

So, good luck.

welight · 2021-04-30T00:49:07.000Z

Kinda interested in whats inconsistent with the description. 3B or 3B0 is the same thing, 3B0 is typically how its labelled in the part number.
Is it 5400k, well we list it based on its outer extreme, yes it falls into the 5k bin description but it could be at worst around 5400k, we would have to spectral test to give an absolute

Please if you have a better way to list parts im all ears
Cheers

Tom_E · 2021-04-30T03:08:00.000Z

Just consistency. If it's 3B0 in the part # and it's the same as 3B, that's great. Just that on this page, it says "3B is 5000K", but in the drop down selection, it says 3B0 (5400K) and no choice of 3B (5000K). Now that you explained it that it's the same, that's good to know. I know you always have, and send the right thing - I always get what I expected, or better than expected which is why you are one of the rare trustworthy sites around, but I know International shipping is not cheap.

Boy, I got qty 10 in my cart which comes to $7 each shipped to US, which isn't bad at all. Wish shipping was cheaper, but I know - we whine about it and are spoiled rotten with Chinese retail sourcing.

welight · 2021-04-30T04:09:54.000Z

Tom E:

Just consistency. If it’s 3B0 in the part # and it’s the same as 3B, that’s great. Just that on this page, it says “3B is 5000K”, but in the drop down selection, it says 3B0 (5400K) and no choice of 3B (5000K). Now that you explained it that it’s the same, that’s good to know. I know you always have, and send the right thing - I always get what I expected, or better than expected which is why you are one of the rare trustworthy sites around, but I know International shipping is not cheap.

Boy, I got qty 10 in my cart which comes to $7 each shipped to US, which isn’t bad at all. Wish shipping was cheaper, but I know - we whine about it and are spoiled rotten with Chinese retail sourcing.

Yes I could just have 3A,B,C and D bins and just call them 5000k, but that would be just as inconsistent. the consistency with our bin labels is to identify the outer quadrant, it does not mean you wont get a led that is right on 5000k but trying to be as close to what we believe the bins represent in terms of the widest possible colour lottery is what we consider fair in terms of information, right or wrong we have to take a position
cheers

djozz · 2021-05-01T12:34:38.000Z

Cutting off the silicon around the die will have a large impact on the green, it will almost solve it. You may involuntarily sacrifice the EDC wire but I never saw any negative effects of that.

djozz · 2021-05-01T16:57:56.000Z

I mis-spelled it, it is ESD wire. Something with protection against electromagnetic fields. Or so, I’m not an expert. All I know is that I never found it mattering if that wire was damaged.

djozz · 2021-05-01T16:57:02.000Z

ZozzV6 made the best sliced XHP leds I have ever seen.

XHP70.2 dedoming pictures and VIDEO added Flashlight Modding and DIY Parts

I recently dedomed a few XHP70.2s and I really like the results so I want to share with all of you. Here you can see the stages of the method: [image] Earlier I only shaved the dome off like on the bottom left but I don’t liked the yellow corona it made. So I decided to slice and dice as Dale said And I removed the yellow phosphor around the dies like on the bottom right one. I have a 1mm thick aluminum plate to help the shaving cut. [image] The led has two bond wires on tw…

pennzy · 2021-05-01T16:57:40.000Z

I don’t know where I screwed up but a de domed xhp 50 turned blue on me once . I can’t remember exactly what went wrong but if I remember correctly, the complete dome came off.

Firelight2 · 2021-05-02T02:40:37.000Z

pennzy:

I don’t know where I screwed up but a de domed xhp 50 turned blue on me once . I can’t remember exactly what went wrong but if I remember correctly, the complete dome came off.

White LEDs consist of a blue LED with a layer of phosphor on top.

When hit with blue light the phosphor emits red and green. This, combined with some of the blue light from the LED that passes through the phosphor is where you get the red, green and blue light that makes up white light.

If your LED turned angry blue after a failed de-dome it means you took too much off. Basically you accidentally removed part or all of the yellow phosphor layer revealing the underlying blue LED.

pennzy · 2021-05-02T13:35:05.000Z

Firelight2:

pennzy:

I don’t know where I screwed up but a de domed xhp 50 turned blue on me once . I can’t remember exactly what went wrong but if I remember correctly, the complete dome came off.

White LEDs consist of a blue LED with a layer of phosphor on top.

When hit with blue light the phosphor emits red and green. This, combined with some of the blue light from the LED that passes through the phosphor is where you get the red, green and blue light that makes up white light.

If your LED turned angry blue after a failed de-dome it means you took too much off. Basically you accidentally removed part or all of the yellow phosphor layer revealing the underlying blue LED.

Thanks. I wasn’t trying to slice it. It just came off with the reflector hitting it. I was bummed after waiting a month to get it from China. Anyway, went back to the original xhp50 but sliced it. CCT dropped a little which was what I was after.