What's your favorite emitter?

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dealgrabber2002
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What's your favorite emitter?

I always like the xpg-g2. Perfect throw and hotspot. What’s your favorite emitter?

Sirstinky
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I’m partial to the xhp70.2, SST40, and sst70.

Forsythe P. Jones
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The one in the 2N3055. Ok I’m showing my age.

richbuff
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My choice of favorite emitter evolves as newer emitters are released. Currently, SBT90.2.

I also like XHP70.2 and Osram W2. Different emitters are best for small, medium and large size throwers, power throwers and flooders.

 

 

Rev 22:15

texas shooter
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XP-L2 HD, good do most everything LED.

Lumen9000
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Is there any collection of the different emitters powerdraw at a specific lumen and or candela? Would be nice to have a cheatsheet.

def_nvar
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depends on application

lights for primarily outdoors:
LH351D 5000k 90CRI (the d0gfarts one Big Smile )
quite efficient in lm/W, so it has good throw
large hotspot, so useful for close range too
colors and tint are very good

lights for indoors / small close-range EDC:
second pick would be 219B 4500k 9050
ultra-perfect colors and tint
but efficiency is abysmal Facepalm Crazy

wish SST20 in 5000k/5600k was 95CRI, the 4000K one has really nice colors but it’s a bit too yellow, especially on low current

Engine Guy
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SBT90.2 is awesome.
But I also like the sst70 and sst40. And I like my only light with sft40, so I’m sure I’d like the sft70…gotta get one of those!

MOD noob

JaredM
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95CRI SFT40.. oh wait.. Facepalm

Forsythe P. Jones
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Lumen9000 wrote:
Is there any collection of the different emitters powerdraw at a specific lumen and or candela? Would be nice to have a cheatsheet.

There is a spreadsheet somewhere, I forget where. But I believe there is a thread linking to it. If I find it I’ll update.
lazerEagle
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It always seems to be the one I don’t have

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xevious
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Are 219B R9080 emitters inherently inefficient compared to more recently produced emitters? What’s the closest to tint temperature that you can get to a 219B R9080 sw40 or sw45 using a more efficient emitter or similar die size?

JaredM
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They actually aren’t terribly inefficient relatively speaking to say an SST20w. They just lack overdriving capabilities. At their ‘sweet spot’ max current in D220 bin, which I peg around 2.75-3A they are doing about 68lm/W. An SST20w in J4 bin (J5 can be had easily these days) at the same current is doing about 75 lm/W. So about a 10% hit. They fall on their face much past 3A though, while SST20w chugs out to 6.75A before the bond wires pop.

Lumen9000
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JaredM wrote:
They actually aren’t terribly inefficient relatively speaking to say an SST20w. They just lack overdriving capabilities. At their ‘sweet spot’ max current in D220 bin, which I peg around 2.75-3A they are doing about 68lm/W. An SST20w in J4 bin (J5 can be had easily these days) at the same current is doing about 75 lm/W. So about a 10% hit. They fall on their face much past 3A though, while SST20w chugs out to 6.75A before the bond wires pop.
I thought we had 3v emitters giving close to 150 lumen /w today. See! Wee need a chart! Big Smile
thefreeman
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JaredM wrote:
They actually aren’t terribly inefficient relatively speaking to say an SST20w. They just lack overdriving capabilities. At their ‘sweet spot’ max current in D220 bin, which I peg around 2.75-3A they are doing about 68lm/W. An SST20w in J4 bin (J5 can be had easily these days) at the same current is doing about 75 lm/W. So about a 10% hit. They fall on their face much past 3A though, while SST20w chugs out to 6.75A before the bond wires pop.

If you’re comparing Texas Ace (219B) and maukka (sst20) numbers, on the one LED they both tested (E21A) TA was 7~8% above IIRC so that 219B number might be a bit overestimated. Plus the sst20 is 500K less.

What’s the die size on the SST-20 ? Might be a bit smaller, although the 219b is quite small already.

One other thing to consider is that less green makes the LED less efficient, so it’s difficult to compare sw45k. Non k bins would be better to compare to but they haven’t been tested.

sp5it
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SBT 90.2 for big lights and Nichia 219b for small lights.

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JaredM
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I was using those two datasets as reference. I didn’t realize TAs numbers were that much higher.. I have tested multiple SST20s and my results line up with maukkas very well. I’m ordering some 219Bs from Simon and will test those in the future apples to apples.

Effective die size on the SST20 is 1.75mm² according to my spreadsheet. Natively it’s 2mm², but the bond wire pads block some. I have some sliced 219Bs in my stash I could measure later but I’m fairly certain it’s just under 2mm² from memory. Nothing recorded in my notes. I’m getting about 1.5mm * 1.5mm so 2.25mm²

Also, my thoughts on use of 219B is as follows. If per emitter current is below ~2A the majority of the time (aka triples quads etc) and especially if there is a buck or boost (for AA lights) driver then I’ll take it over SST20 all day. By the time you tint correct or pwm a FET on the SST20, efficacy is at or below a 219B.

SST20w is a throw king though and wins out in single emitter lights with anything larger than 1*14500

thefreeman
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JaredM wrote:
Effective die size on the SST20 is 1.75mm² according to my spreadsheet. Natively it’s 2mm², but the bond wire pads block some. I have some sliced 219Bs in my stash I could measure later but I’m fairly certain it’s just under 2mm² from memory. Nothing recorded in my notes. I’m getting about 1.5mm * 1.5mm so 2.25mm²

Yeah they got the same area here for the 219B : https://budgetlightforum.com/node/54377

Personnaly I like sliced 90CRI LH351D, especially 3500K : virtually no angle tint shift, neutral tint/slightly under the BBL at low/high output, R9 close to 80, while keeping a higher efficiency than an SST-20.

Also B35AM 9080 : neutral/slightly rosy at low/high current, virtually no angle tint shift, very high CRI, higher power 3535 sized LED.

For the 219B I would prefer a sw40k or sw35k since I prefer warmer CCTs, still like the sw45k though.

MoreLumens
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219b sw45k’s, SST20 4000k, sliced LH351D 5000k and GT-FC40 4000k.

Well yes also XHP70.2 and MT-G2.

NeutralFan
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Favorite emitter? That’s a tough one. Either the 219B or E17A. Currently it’s the quad E17As.

I’d rather use my flashlight around the house than turn on the lights.

CNCman
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Sliced and diced XHP70.2 at 12volts, 8amps, 8500 lumens.

chops728
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MT-G2 4000K was a good one for a long time —- I’m liking LH351D 3500k I bought from some one on BLF

Funtastic
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One that works. Having anything else is rather pointless Silly

Texas Ace Lumen Tube calibrated with maukka lights

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anonymous_user
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219B 4500K (sw45k) all day everyday. Most of my lights are of the EDC variety so it fits the bill.

Deluminator
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Was SST40 6500K & LH351D 5000K. Now that I’m all grown-up,

It’s SFT40 for stompin around & 219b obsession!!

I’m sure in a year from now it’ll be different.

ArtieT59
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Oh man, this is a great thread question! I haven't been around long enough to know obscure awesome leds like many folks here, but I have a couple I really like, and I also have my first sw35 and sw30 219b's coming in on order from Simon, so I can't say either of those yet though I'm hoping the sw30 makes it to the top of the list, especially since I wasn't overly impressed with the sw45k from emisar (I just like warmer tints too much and it felt too cool was all really, the color was nice of course).

 

  • xpl-hi 5D (the rosy one from emisar 8 months ago when he did NOT have them in stock or as an option on his site but still had them in his store and sent me a KR4 with them and they are perfect - rosy, bright and awesome, thought a little more like 4200k).
  • xhp35 HI 4000k (like in my skilhunt from mbplitt and/or id30209 :), or my k1 from Noctigon- perfect)
  • osram CULPM1 (bright, throws very well, and nice tint for a throwing led)
  • sbt90.2 (just impressive in every way, including a decent tint)
  • sft40 (just, wow. And coming out in 5000k?! Awesome)
  • xpl-hi 2850k 8A (rosy, bright, nice tint and decent cri. It's a great all-arounder)

I have my first gt fc40 light coming in, so that is HIGHLY anticipated as well as the sw30 219b. I have a feeling one of or both of them may be on this list. 

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Check out some of my new lights (picture heavy) and quick first impressions of them here: https://budgetlightforum.com/node/77180

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Lightbringer
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Forsythe P. Jones wrote:
The one in the 2N3055. Ok I’m showing my age.

Naw, the TIP31. Twice the fun…

 

Oh yeh, the MT-G2. Creamy white goodness…

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edith123
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The XHP35 HI is fantastic. That’s what I have in my SC600 MKIII HI. It has a lovely color and a good blend of hotspot and spill with the reflector they utilize.

pennzy
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This one in my D4V1
XP G2 S4 3D 4885

ArtieT59
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edith123 wrote:
The XHP35 HI is fantastic. That's what I have in my SC600 MKIII HI. It has a lovely color and a good blend of hotspot and spill with the reflector they utilize.

 

yes, yes, and I need one of those sc600 HI ! Lol. Will ZL ever release them again?

[FLF] Five Light Friday https://budgetlightforum.com/node/78749

Check out some of my new lights (picture heavy) and quick first impressions of them here: https://budgetlightforum.com/node/77180

My Sft40 beamshots / comparison thread: https://budgetlightforum.com/node/78100

Bardo219
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I also always liked the old MT-G2. I think all of mine were 5000k. Great tint.

219b is a classic. My current favorite all around is LH351D 3500k or 4000k.

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