FW3A, a TLF/BLF EDC flashlight - SST-20 available, coupon codes public

Not really. Even if it worked perfectly, the benefit would be very small. And it’s unlikely it would work perfectly. It could easily create a zig-zag in the ramp instead of going up smoothly.

Using a 1+1+2+4 chip design can work better, and it allows hitting any regulated level while only doing PWM on the first channel. However, this also has relatively minimal gains over a 7+1 design, and it requires more pins, and it tends to make the ramp a little more bumpy because there are more channel transitions.

In any case, it won’t get anywhere near the efficiency of a ZebraLight, because ZL converts extra voltage to usable power and 7135 chips do not.

Thank you for passing along news from outside of BLF. It’s helpful to hear about what gets posted elsewhere. :slight_smile:

SST-20 leds look really good in the Carclo 10507, some fraying at the edge of the hotspot closeby that virtually disappears at over 2 meter. Only if you are looking for it you see that the very edge of the hotspot is a bit cooler than the rest of the hotspot. I think it suits the FW3A better than the very floody LH351D, the 4000K and 3000K versions have better tint and CRI and a bit more spot brightness, but with a little less output.

Because for some reason the various SST-20 leds are well available in China, I’m sure that Lumintop will make an SST-20 version at some point.

it will be a while probably, after chinese holidays, most likely Neal will send them out, or atleast help out with it like he has done before in group buys.

Cool just been back into this thread after a few months away and looking at the updates has me well um Excited looks really good and I just want to make sure I don’t “miss the boat”

In for one! Thank you!

Excited to swap Luxeon Vs into one...

I am 192…please put me down for 1 more (2 total).

When I put some in a E2L with 10507 the starburst shaped hotspot is very noticable to me. I personally am not too bothered by it but I dont think I would say virtually disappears.

Sign me up for 1 please.

Please put me down for two more.

Nope, I already asked about the color some pages back, it’s not like it’s graphite gray or something (sadly ;D) – see TK’s reply:

Just got an Emisar D4 with 4000K 95 CRI SST20 installed.

The beam looks beautiful. I think even superior to my previous favorite XPL HI 4000K.

Might have to get some of these to swap into an FW3A.

Hank has a great price on the SST20's - $1.58 each, qty 10.

Link please??

https://intl-outdoor.com/luminus-sst20-bare-led-p-936.html

hi ,
Checking in, it appears there is a decision to be made.
my numbers are 739, 740, 889, 890. could you make it two of each emitter? thank you. Andy

Thanks KB, ad there's more. Hank just emailed me with the part numbers of the low CRI versions:

SST-20-WCS-A120-L3652(L3-VL-BA) 6500K

SST-20-WDS-A120-L2501(L3-VK-DA) 5000K

I asked him to post on the website, we'll see. I got in the 5000K's for their better throw and output, so that DA tint I'm glad to see.

I would assume their the same SST-20's he's using in the Emisars. I email him at contact@intl-outdoor.com, and seems to get back pretty quick, might be an hour or day or two.

Is he sure that the 5000k emitter is a L3 flux binned part?

The datasheet says that the L2501 chromacity bin is a L2 flux binned part with a chance of getting the DA tint bin, which seems good.

Thanks for the info KB & TomE.

@ TomE…. Excuse my ignorance, but what is the DA tint you mentioned?
What does the ’DA’ signify??