with XML-3?
Yes. The existence of the XM-L3 is likely news to most of us on the forum.
New emitters are always exciting, but Iām sure Iām not alone in having low expectations from anything new CREE is producing unless you want low CRI, floody, long runtime LEDsā¦
Looks like the XM remains a 3V configuration (yay). Output increase seems largely due to a new 5A max rated current. It still uses bond wires, so who knows how well it will overdrive. Efficiency is improved via much lower Vf. 5A is now only ~3.45V. Specsheet puts max output at about 1600lm @5A*3.42V (93 lm/w).
Itās an interesting looking emmiter though. Seems like a hybrid architecture. Phosphor over the bond wires and surrounding package, but still uses them (bond wires) and an elevated emitting planeā¦ not sure how much additional angular tint shift these will suffer due to that. You can probably forget about using old dedoming methods though. Time will tellā¦
Still seems to fall short of the SST-4O and possibly even good old batches of the xm-l2 with good bond wires and reasonably low Vf
The SST40 does better than the XM-L2 and the XM-L3? Odd. Itās strange they didnāt go with the flip chip like their newer emitters. XM-L2ās have trouble getting past 6A overdriven. SST40 can go well over 7A. Even the XP-L can go higher. Sounds like an emitter that doesnāt know what it is or what it wants to be when it grows upā¦
What does it mean for the end-(f/l)-user in terms of tint and efficiency? I have replaced XM-L with XM-L2 in all my flashlights, where applicable, and got much better tint and much more lumens (one NW XM-L2 is among my favourite LED tints despite being LCRI).
Letās not forget one does not need a new MCPCB to use XM-L3, it works on the same pads as any other XM-L1 or XM-L2.
Am i blind? Im not seeing the specs for the LES. Anybody know what size the light emitting surface is?
Not specified, XM-L1 and XM-L2 do not have it specified either in the datasheets.
Same here. The 2-step binned XM-L2 5D4 from Simon was one of the prettiest emitters Iāve seen. In fact it was even nicer in comparison than the 95CRI FD2 SST-20 and even than the E21A 3500K.
Iām guessing this would be great for multi emitter lights like the E07 due to its low Vf?
The Vf is only low in comparison to the XM-L2/XP-L. Itās still ~100mV higher than the SST40 (djozz data). Seems like an XPL2 performance in a 5050 footprint with bond wires (aka fuses) and maybe not-so-terrible luminance and tint.
Thermal resistance is quite bad.
The only advantage I see over SST-40 is a wider range of CRIs available.
Though there was information about CRI95 SST-40 coming. Which would be interesting.
95CRI SST40 would be awesome. Donāt know why it isnāt here yet honestly. Just paint that chip with that good phosphor package
I think Cree needs something new, not a refreshed 5050 size donāt you all? Something to compete with the sbt90.2. I get high efficiency and lm/w etc, but what about power? I got sad yesterday and ordered some faithful xp-lās.
18 of these in my MF01S would be nice
Iāve got some of these
I donāt get it - what should I do to configure it working in 6v?
should I solder/jump anything?
thanks.
Solder J
left J with - and right one with +?
anyone ?
Yes both