TK's Emisar D4 review

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DB Custom
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And that’s probably a good thing Stereodude, it lets you hold onto it. You should be seeing right around 3000 lumens at start up when that VTC6 is fresh.

Should you decide to swap the 22ga stock wires for heavier ones, bypass the driver spring and replace the tail spring with a copper button it may not remain the case… Wink

Edit: Probably should note that the 20 seconds was with the light in my light box, surrounded by the foam that centers the light on the glass shelf. No air circulation at all. And of course, with the Samsung LH351D emitters at some 30% more output than stock with Nichia’s… (also, in the copper head of the Titanium D4)

UncledoL
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Hi guys , i just joined this forum yesterday . i asked toykeeper some questions yesterday regarding the emisar d4 as im planning to get a few to use for work and edc . toykeeper directed me here . thought i would ask everyone here about it . i do apologize in advance if some of my questions seem stupid as im no expert on flashlights .

1)is the emisar d4 durable enough for work and edc(i work in construction so dropping it on the ground and puddles of water will be inevitable)

2) i usually use 250-600 lumens max on my previous lights so what kind of runtimes can i expect from the d4 if i use it that way(the 3000+ lumens of the d4 makes it nice to have even if i wont need to use it often)

3) how long of a lifespan can i expect from the light itself ? Eg. The led .

Cheap cheap good good

justanotherguy
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Well you certainly won’t be running it at 3000 for more than 30 seconds…..

BlueSwordM
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I have to say it again, but here are links for the LH351Ds from Digikey in various CCTs:

Here is 5000k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH…

Here is 4000k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH…

Here is 3500k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH…

2700k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH…

Hope I helped you all guys and gals.

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

moderator007
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BlueSwordM wrote:
I have to say it again, but here are links for the LH351Ds from Digikey in various CCTs:

Here is 5000k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH…

Here is 4000k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH…

Here is 3500k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH…

2700k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH…

Hope I helped you all guys and gals.


For me, every link says “Page Not Found” Facepalm
They worked for me the last time you posted the links.
moderator007
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BlueSwordM wrote:
Ok, here are some not dead links:

Here is 5000k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH...

Here is 4000k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH...

Here is 3500k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH...

2700k 90+CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH...

Hope I helped you Texas Ace.


I copied and pasted from the LH351D thread.
BlueSwordM
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Ok wut again.

Why can't I copy and paste the right links again and again?

EDIT: What kind of problem do I have? OH! It's because I'm directly copy pasting the text, not the links themselves.

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

DB Custom
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Digi-Key doesn’t sell the 5000K 90CRI except for in counts of 800. Wink

Samsung LH351D

BlueSwordM
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@DB Custom, yes they do sell 5000k 90CRI:
https://www.digikey.ca/product-detail/en/samsung-semiconductor-inc/SPHWH...

You just needed to search for the right one. It took 10-15 minutes for me to find each one of them and compare to their datasheets.

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

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UncledoL wrote:
1)is the emisar d4 durable enough for work and edc(i work in construction so dropping it on the ground and puddles of water will be inevitable)

2) i usually use 250-600 lumens max on my previous lights so what kind of runtimes can i expect from the d4 if i use it that way(the 3000+ lumens of the d4 makes it nice to have even if i wont need to use it often)

3) how long of a lifespan can i expect from the light itself ? Eg. The led .

I can’t answer all of those, but here’s at least a partial answer.

The light uses 350mA at the ~150 lm level, so it probably uses about 2 to 4 times as much power at the 250-600 lm levels you described. Maybe 700 to 1400 mA, which on a 3000 mAh cell works out to about 2 to 4.5 hours.

The LED itself is unlikely to ever burn out or need replacing, especially if you have the XP-L HI model. I hear the Nichia 219c may have some difficulty when used at turbo a lot, but it should generally still be fine for normal use. The main thing people have reported issues with is a broken switch wire. But that will generally show up right away, and shouldn’t really degrade over time. Or a couple people have managed to break the lens, but it’s pretty easy to replace.

moderator007
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They’re all dead but the links I copied and pasted. Silly
That last one worked Thumbs Up

BlueSwordM
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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

DB Custom
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Read em again BlueSword, the only way they sell the 5000K 90CRI they have in stock is in minimum quantity of 800.

Edit: Could well be the difference between Digi-Key in the USA vs Digi-Key in Canada. Wink

BlueSwordM
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Uh, my link says otherwise for some reason !!!

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

moderator007
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DB it doesn’t list the led as 5000k 90 CRI but when you look at the part number and match to the datasheet, that’s what it is.

BlueSwordM
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+1

This is why I posted the specific list of the links. So, members could order the right LEDs Thumbs Up Beer

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

goshdogit
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DB Custom wrote:
Read em again BlueSword, the only way they sell the 5000K 90CRI they have in stock is in minimum quantity of 800.
BlueSwordM wrote:
Uh, my link says otherwise for some reason

If you click the product page, you can switch to ‘Digi-Reel’ packaging and buy ‘em one-at-a-time, but they ain’t $1 each. Wink

moderator007
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This is the US site.
https://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SPHW...
I just changed the .ca to .com

DB Custom
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I studied the Samsung spec sheet, learned the reasons for all the lettering and text in their label, and that’s what I go by. The Digi-Key in the US doesn’t sell the 90 CRI 5000K in singles. The 80 CRI ones I bought were $2.64 each as compared to $3.57 or so Canadian on the links posted above for the 90 CRI version. The Canadian site also has W6 power bins available that the US store doesn’t have at all. Now if we could only find the 96 power bins…

DB Custom
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Ah, the devil is in the details.

I won’t buy an S6 power bin when W6 is the current highest available. 4 levels down in power, no thank you.

Edit: And following that last provide link shows a W6 in the US store, Digi-Key is SO confusing… I’ve spent hours in their store in the past few days and bookmarked the highest bins, searched it out all over again a few minutes ago and U6 was it, now that link shows differently, how I don’t know but there must be some discrepencies in their warehouses or something and it’s frustrating. lol

moderator007
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I’m trying to figure this out. For me it works DB. Clink my link above “US site” and try to order.

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DB Custom wrote:
Ah, the devil is in the details.

I won’t buy an S6 power bin when W6 is the current highest available. 4 levels down in power, no thank you.


Okay, there it is. Not the same bin. But they do sell LH351D 5000k 90CRI’s Silly
DB Custom
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Yeah, I don’t mind getting decent CRI if I can get power, if I have to sacrifice too much in the power department I’ll go with an XP-L2 or SST-40 or whatever. No point in wasting time to build an underpowered light. Big Smile

JK, to some degree… some lights demand something special and there are allowances that can be made. lol

Edit: FTR, I searched it out new a little while ago and specified Samsung, LH351D, and 90CRI… the only thing they stocked showed 800 counts. Odd, their site is apparently unreliable. Crazy…

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From Digi-Key’s US site:

From Samsung’s datasheet:

It seems their ‘minimum order’ quantity won’t prevent you from adding a single emitter to the cart. Big Smile

BlueSwordM
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So, yeah, that’s the highest possible bin for a 90CRI+ 5000k LH351D.

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

DB Custom
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No such thing when I ordered the other day, I paid $21.21 for 6 of the 5000K 80 CRI emitters, shipped was $3.75 USPS and $1.62 tax. 3 days to my door.

I build for power first and foremost, if it can’t make the numbers I don’t buy it. Unless of course the light demands something special and high color rendering index is the flavor of the day, there have been exceptions but very rarely do I undercut the power first requirement. I’ve even ordered emitters from Cutter in Australia to get what was otherwise unavailable to me, yes, at $25 shipping. In a case like that I’d buy other things too in order to warrant the costs of shipping Internationally.

This was my first experience with Samsung emitters. They do well in my D4 as a Quad, not so much singly in other lights. Ok, and with nice color, but not overwhelming. I’ll use more, sure, but it’s not an easy go-to choice.

moderator007
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I ran a google search comparison changing the last two out put bin letters. No hits at all on anything higher than the S6 at digikey in 5000k 90CRI.
So at the moment that’s the top bin for high CRI in 5000k. 80 CRI 5000K is U6. 70CRI 5000K W6 as DB said.
In digikey I just use the search using the bin code and it gives me all the different buying options.

DB Custom
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If they have a minimum listed and you enter “1” you’ll be paying $1500 for your “single” emitter. Wink Ya gotta watch Digi-Key! Learned that a long time ago.

They typically sell by Reel, Digi-Tape, and Cut Tape. Reel is like 1500 5,000 emitters, Digi-Tape is 3,000 or 2,500 or 800 and Cut tape is 1 or more with price breaks at 10 and 50 and 100 as I recall. I’ve bought emitters from them in most of those quantities, only 200 at one time though.

goshdogit
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DB Custom wrote:
If they have a minimum listed and you enter “1” you’ll be paying $1500 for your “single” emitter. Wink
Hmm… Wink

I wasn’t brave enough to click ‘checkout.’ Big Smile

UncledoL
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Still good to have for self entertainment though

Cheap cheap good good

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