Cree LED specs

emitter type specs
LED XR-C XP-C XR-E XP-E XP-G MC-E SSC P7XM-LSST-50SST-90
rel. flux @ 350mA a100% 100% 100% 100% 100% 100% 100% 52% 100% 100%
rel. flux @ 700mA a128%
@ 500mA
129%
@ 500mA
169% 174% 185% 174% 174% 100% 194% 193%
rel. flux @ 1A a 221% 223% 248% 138% 273% 270%
rel. flux @ 1.5A 333% 195%
thermal sag @ 75C 13.4%14.6%12.8%11.8%11.1%11.8%9.1% 10% 8.6% 9.6%
thermal sag @ 125C 27% 29% 26% 24% 22% 24% 26% 21.5%17% 19%
thermal resistance [K/W] 12 12 8 9 6 3 3 2.5 2.45 0.64
beam width FWHM [] 90 115 90 115 125 110 130 125 100 100
die size [mm] 0.44 0.44 0.92 b
0.73 c
0.92 1.92 4* 0.924* 0.92 4 5.0 9.0
virtual die size [mm]
apparent size as seen from front
2.76 b
2.07 c
1.943.508.53
max. current [A] 0.5 0.5 1.0 1.0 1.5 2.8 2.8 3.0 5.0 9.0
max. bin P4 Q4 R2 R3 S2 M D U2 J N
min. flux [lm]
at max bin and max current
103 129 253 271 493 750 800 975 1365 2700
die emittance [lm/mm]
flux per die area
234 293 276 b
347 c
296 258 205 218 244 273 300 d
specs @ 25C --- a) MC-E/SSC-P7: per die; SST-*: per mm --- b) EZ1000; c) EZ900
The XR-E EZ1000 is reported to perform slightly (~1.5%) better than stated @ 1A.
d) typical estimated sag is around 10%, but for SST-90 more like 20%
Cree XR-*/XP-* flux bins and luminous flux
binXR-C/XP-CXR-C/XP-C
XR-E/XP-EXR-E/XP-E
XP-GXP-G
350mA500mA1A1A1.5A
100% 128% 222% 248% 333%
P267-74 86-94 149-164
P374-81 94-103 164-179
P481-87 103-112 179-194
Q287-94 112-120 194-208
Q394-100 120-129 208-222
Q4100-107129-138 222-238
Q5107-114138-147 238-253
R2114-122 253-271 283-303 380-406
R3122-130 271-289 303-322 406-433
R4130-139 322-345 433-463
R5139-148 345-367 463-493
S2148-156 367-387 493-519
MC-E flux bins
binMC-Eeach die
is similar
to XP-E
1.4A2.8A
100%174%
F210-240366-418N2-N3
G240-280418-488N3-P2
H280-320488-558P2-P3
J320-370558-645P4-Q2
K370-430645-749Q3-Q4
M430-490749-854Q5-R2
N490-550854-957R3-R4
At up to 1.5A an MC-E M-bin perfoms
roughly equivalently to a single XP-G R5.

SSC P7 bins
C700-800Q4-Q5
D800-900R2-R3

SST-50 & SST-90 flux bins and luminous flux
binSST-50SST-90
1.75A5A3.15A9A
100% 273% 100% 270%
G350-425 956-1160
H425-500 1160-1365
J500-600 1365-1638
K
L700-8501890-2295
M850-10002295-2700
N1000-12002700-3240
specs @ 25C; typical thermal sag with good heat sinking
would be ~8% for SST-50 and ~17% for SST-90
Cree XM-L Data for T6 min flux
I [A] 0.35 0.7 1.0 1.5 2.0 3.0
rel flux 52% 100% 138% 195% 245% 325%
flux [lm] 145 280 386 546 686 910
U [V] 2.78 2.9 2.98 3.09 3.19 3.34
P [W] 1.0 2.0 3.0 4.6 6.4 10.0
eff. [lm/W]149 138 130 118 108 91
specs @ 25C -- flux bins (flux @ 0.7A):
T5: 260-280lm - up to 7% less  flux and efficacy
T6: 280-300lm - up to 7% more flux and efficacy
Cree XM-L Data for U2 min flux
I [A] 0.35 0.7 1.0 1.5 2.0 3.0
rel flux 52% 100% 138% 195% 245% 325%
flux [lm] 155 300 414 585 735 975
U [V] 2.78 2.9 2.98 3.09 3.19 3.34
P [W] 1.0 2.0 3.0 4.6 6.4 10.0
eff. [lm/W]159 148 139 126 115 97
specs @ 25C -- flux bins (flux @ 0.7A):
U2: 300-320lm - up to 7% more flux and efficacy
but I wouldn't count on that...

Here are some charts of top-bin LEDs:

flux vs. current


The lines are quite near to each other in that plot, so the next plot shows flux per current.
For the 3*XM-L U2 the current is meant as the total current in a parallel setup (uncommon) or as three times the LED current (in a serial setup) for an easier comparison to the SST-90.

flux per current [lm/A] vs. current


XM-L T6 starts at 420 and goes down to 303.
The XP-G S2 starts at 430 and ends at 329 lm/A.
The MC-E M-bin is roughly as much below the P7-D as the MC-E N-bin is above it.

efficacy, flux per power [lm/W] vs. current

...and finally the efficacy, which is flux per power:

XM-L T6 starts at 159 and goes down to 91 lm/W.
The XP-G S2 starts at 161 and ends at 93 lm/W.
The MC-E M-bin is roughly at the same level as the P7-D.
Sources: Cree datasheets, Luminus datasheets
I extracted all info from the data sheets, some by reading values from graphs as well as I could.
Virtual die size is measured by myself though, with 3% estimated tolerance.
Note that CREE specifies a flux measurement tolerance of +/- 7%, so don't take the last digit seriously.
© DrJones (2010)