LOL, off track? At BLF? 
Remember when the quote’s used to run like 10-15 stages deep around here? A thread would get derailed and be so far off track nobody remembered where it started.
This kind of thing happens when we wait for word on a build or new release, everybody gets a little antsy… 
Contact them, even though last time I checked they said “no longer available” vendor states larger amount can be ordered and send t a China address.
We passed this info and link on to Thorfire they probably gonna contact them to see if it is genuine.
They are genuine . I have ordered from them both sir800dp and sir404dp .
Yes. no longer available - dead end.
No no vendor says them can deliver 1000 pieces.
It is up to Thorfire now to contact them.
I got a bunch more of 404's on the way and just got in XPL2 V5 4000K LED's. Might be updating the 4X SRK clone (with the BLF Q8 driver) with those LED's, and the 404 FET. Would be interesting... I measured 7.8A at the tail on a fully modded ThorFire JM07 with the new XPL2 V5 installed, running Narsil of course 
. It measured over 1,800 lumens @30 secs in a nice 4000K tint. In a 4X SRK, it might do close to 25A - pretty crazy. In our BLF Q8 proto, bet those LED's would do 28A easy, maybe 6,700 lumens.
The XPL2's have a low, efficient Vf, making it much easier to get higher amps, and they seem to be able to handle it well, with peak output at about 10A, shown here. Main complaint is the tint of the beam, with a more yellowish halo around the hot spot. Really want to see how it will look in a multi-LED light.
Nice curious myself
That tint shift reads awful (I read purplish yikes) but yellow seems OK though
The tint shift on the edge of the beam generally go towards the yellow side of things.
The Fandyfire Rook was a nice-looking light. It’s too bad it didn’t have a better driver. I wanted one until I read reviews.
If I recall correctly, the last time I got a multi-AA light was ages ago, an EternaLight ErgoXRay. It handled more like a phaser than a flashlight, but it was a fun little thing. It was my first portable strobe light. Not quite eternal though, as the vinyl face halfway detached from its plastic base and the plastic screw threads got stripped… and it’s now out-classed in terms of brightness, tint, and beam shape by lights small enough to count as jewelry. Flashlights have come a long way.
My FandyFire Rook has a hand polished mirror finished reflector, Noctigon under an XM-L2, and custom TK firmware with 3 modes and a police strobe, reversing. 
I think I am going to bore the tube and do whatever is required to use a single 18650, 26650 if I can swing it. 3 of the 14500’s are a bit weak on the capacity side of things.
FWIW the sira06dp also seems like a reasonable alternative. Rdson is relatively high at 2.5mohms though.
The "On-Resistance vs. Gate-to-Source Voltage" chart doesn't look too good for our voltage range. DEL would know better than I, for sure. I think that was the chart DEL looks at carefully. I'd have to check though.
Difficult to beat the Vishay SiR800 or SiR404 for what we do.
A useful clue when selecting these is when ‘Rds at 2.5 V gate drive’ is listed under the main product features or product summary.
I am still somewhat on the wire between the ‘old’ NXP 3R0 and these Vishay parts, only because of the SOA curves. The NXP seems to be much more tolerant to abuse. We have, however, no reports of the SiR’s failing? And I do prefer the more rugged type of pads/pins of the SiRs.
I find I use the NXP for most of my personal lights, I only notice a difference on the meter and then only in builds that are pushing the edge.
The NXP is cheaper and I find it easier to work with due to the drain pad being “exposed” and making soldering easier in small spaces.
Will sir800dp survive on a triple xhp70 light ?
I have the SIR800DP pushing 4 9V MT-G2’s as well as in a 3 XHP-70 light. 15,000 lumens. Richard used the SIR800DP in his 39,000 lumen monster. Yes, they hold up.
The A00 doesn’t produce as much power, falls shorter as the cell dies. Tried it already.
I’ve used over 100 800’s (closer to 200), probably 30-40 404’s, the 404’s give a bit more output especially in triples or quads. Noticeable to the eye? Not 100% sure, depends on the light and total lumens as a big light can do hundreds more lumens even close to 1000 more but at 12,000 is 13,000 a noticeable difference to most people? Again, depends on what you’re doing and how sensitive to the differences you are.
Not ideal. 20 A DC is pushing it with the SiR800 if you adhere to the datasheet. But TomE and Dale are probably proving the datasheet wrong.
I would look at the SiR404, its SOA peaks at 30 A for DC. The NXP 3R0 will also perform admirably with the available gate drive of a driver running on 2S cells.
It was the only EU source without crazy shipping cost . :person_facepalming: :person_facepalming: :person_facepalming:
Thanks Dale , good to know .
I will try 3R0 if ihave any left , thanks !
Hhhmmmm. 20A is a major limit. Might actually reach close to 30A on 4 XPL'2s. Actually I had my clamp meter set to the 20A range and got readings at about 21A, interesting...
I;m getting confused (again...). Isn't the NXP 2R0 the better one? 2R meaning 2 milli-ohms. I could be wrong...
My Noctigon Meteor is using the 800 at 33.7A. No problem. I don’t know what Richard’s TrustFire TR-J20 was pulling but it was way up there, I’ll double check with him on that one.
I just built my first Narsil driver. It’s on a triple down Texas Avenger, sanded down a bit to fit in the FandyFire Rook. XM-L2 on a Noctigon, the ramping is great, really loving how it works and how smooth it is as well as the lock-out feature. I had to bore the triple AA tube for an 18500, pulled the triple spring pcb and fitted a copper disk in the tail, screwed down and with a bit if a solder bump on it for the negative contact. The bored tube just does clear the 8 7135 chips on the contact side, worked out really well.
Thanks go to Tom for making the Narsil available and to Texas Ace for his sample Texas Avenger LDO board and the ATTiny85 he threw in with it. Not the easiest driver to hand assemble but it works out really well. 
People, this Q8 is really gonna rock! If anyone’s on the fence, come on over and join us for an epic light that will set a new standard!