TK's Emisar D4 review

Just out of curiosity, I put the full tube on it and tested it with the Sony VTC5A 18650 cell., fresh off the charger.

Start, 5416.5 lumens
20 seconds, 4726.5… was going to do a 30s test but at 20 it was burning my finger.

Any plan to see emisar with metal switch button?

Dale, you keep talking numbers like that, and I may have to send you mine to see if I can burn my hands in 20 seconds or not. :slight_smile:

It currently has the Nicha 219 and frosted lens. The Samsung upgrade is looking mighty interesting.

In the land of the midnight sun lights are forgotten about for the summer. Winter is coming.

FWIW, my stock Nichia 219C D4 throttles back before it gets to the finger burning stage with a freshly charged VT6.

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)

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 .

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

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” :person_facepalming:
They worked for me the last time you posted the links.

I copied and pasted from the LH351D thread.

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.

Digi-Key doesn’t sell the 5000K 90CRI except for in counts of 800. :wink:

Samsung LH351D

@DB Custom, yes they do sell 5000k 90CRI:

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.

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.

They’re all dead but the links I copied and pasted. :stuck_out_tongue:
That last one worked :+1:

Thanks again.

Now, here are the good links. I have manually checked them. The prices are in $CA:

5000k 90CRI:

4000k 90CRI:

3500k 90CRI:

2700k 90CRI:

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:

Uh, my link says otherwise for some reason :exclamation:

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.

+1

This is why I posted the specific list of the links. So, members could order the right LEDs :+1: :beer: