New 16mm Board for XML-3

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 Iā€™m sure Iā€™m not alone in having low expectations from anything new CREE is producing unless you want low CRI, floody, long runtime LEDsā€¦

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.cree.com/led-components/media/documents/XLampXML3.pdf&ved=2ahUKEwjts5XO0pvpAhVVg3IEHc9_DW4QFjABegQIARAI&usg=AOvVaw34Fe91dxB9bf6JEbZ0VAny

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).

Itā€™s 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. Itā€™s strange they didnā€™t go with the flip chip like their newer emitters. XM-L2ā€™s have trouble getting past 6A overdriven. SST40 can go well over 7A. Even the XP-L can go higher. Sounds like an emitter that doesnā€™t 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).

Letā€™s 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 Iā€™ve seen. In fact it was even nicer in comparison than the 95CRI FD2 SST-20 and even than the E21A 3500K.

Iā€™m 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. Itā€™s 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. Donā€™t know why it isnā€™t here yet honestly. Just paint that chip with that good phosphor package :innocent:

I think Cree needs something new, not a refreshed 5050 size donā€™t 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-lā€™s.

18 of these in my MF01S would be nice

Iā€™ve got some of these :slight_smile:
I donā€™t 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 :frowning: ?

Yes both