Product family data sheet
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and
EasyWhite® are registered trademarks and the Cree logo is a trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
Cree, Inc.
4600 Silicon Drive
Durham, NC 27703
USA Tel: +1.919.313.5300
WWW.CREE.COM/XLAMP
CLD-DS88 REV 6A
Cree® XLamp® CXA1850 LED
PRODUCT DESCRIPTION
The XLamp® CXA1850 LED expands
Cree’s family of High Density (HD) LED
arrays, featuring a 12-mm optical source
and enabling lighting manufacturers to
create a new generation of products
that delivers the same intensity and
light quality as 70-W ceramic metal
halide (CMH) at up to 50 percent lower
power. The new HD class of CXA arrays
provides unrivaled lumen density that
can reduce system cost for the next
generation of LED spotlights.
The CX Family LED Design Guide
provides basic information on the
requirements to use the CXA1850 LED
successfully in luminaire designs.
FEATURES
• Available in 4-step, 3-step and 2-step
EasyWhite®binsat2700K,3000K,
3500K,4000K&5000KCCTand
4-stepEasyWhitebinsat5700K&
6500KCCT
• Available in ANSI white bins at
4000K,5000K,5700Kand6500K
CCT
• Available in 70-, 80- and 93-minimum
CRI options
• Forward voltage option: 36-V class
• 85°Cbinningandcharacterization
• Maximumdrivecurrent:2100mA
• 115°viewingangle,uniform
chromaticity profile
• Top-side solder connections
• Thermocouple attach point
• NEMASSL-32011standarduxbins
• RoHS and REACh compliant
• UL®recognizedcomponent
(E349212)
TABLE OF CONTENTS
Characteristics ............................................2
Operating Limits ..........................................2
Flux Characteristics, EasyWhite® Order
Codes and Bins ...........................................3
Flux Characteristics, ANSI White Order
Codes and Bins ...........................................5
Relative Spectral Power Distribution .........6
Electrical Characteristics ............................6
Relative Luminous Flux ...............................7
Typical Spatial Distribution .........................8
Performance Groups - Brightness .............8
Performance Groups - Chromaticity ..........9
Cree EasyWhite® Bins Plotted on the CIE
1931 Color Space ..................................... 12
Cree ANSI White Bins Plotted on the CIE
1931 Color Space ..................................... 12
Bin and Order Code Formats ................... 13
Mechanical Dimensions .......................... 13
Thermal Design ........................................ 14
Notes ........................................................ 15
Packaging ................................................. 16
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
2
XLamp® CXa1850 LED
CHARACTERISTICS
Characteristics Unit Minimum Typical Maximum
Viewing angle (FWHM) degrees 115
ESD withstand voltage (HBM per Mil-Std-883D) V 8000
DC forward current mA 2100*
Reverse current mA 0.1
Forwardvoltage(@1400mA,Tj=85°C) V 35
Forwardvoltage(@1400mA,Tj=25°C) V 42
* Refer to the Operating Limits section.
OPERATING LIMITS
The maximum current rating of the CXA1850 depends on the case temperature (Tc) when the LED has reached thermal equilibrium under
steady-state operation. The graph shown below assumes that the system design employs good thermal management (thermal interface
material and heat sink) and may vary when poor thermal management is employed. Please refer to the Mechanical Dimensions section
on page 13 for the location of the Tc measurement point.
Another important factor in good thermal management is the temperature of the Light Emitting Surface (LES). Cree recommends a
maximumLEStemperatureof135°CtoensureoptimalLEDlifetime.PleaserefertotheThermalDesignsectiononpage14formore
information on LES temperature measurement.
CXA1850
0
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
025 50 75 100 125 150
If (mA)
Case Temperature (°C)
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
3
XLamp® CXa1850 LED
Notes
• Creemaintainsatoleranceof±7%onuxandpowermeasurements,±0.005onchromaticity(CCx,CCy)measurementsandatoleranceof±2onCRI
measurements. See the Measurements section (page 15).
• CreeXLampCXA1850LEDordercodesspecifyonlyaminimumuxbinandnotamaximum.Creemayshipreelsinuxbinshigherthantheminimum
speciedbytheordercodewithoutadvancenotice.Shipmentswillalwaysadheretothechromaticitybinrestrictionsspeciedbytheordercode.
* Fluxvalues@25°Carecalculatedandforreferenceonly.
FLUX CHARACTERISTICS, EASYWHITE® ORDER CODES AND BINS (IF mA, TJ 
The following table provides order codes for XLamp CXA1850 LEDs. For a complete description of the order code nomenclature, please
see the Bin and Order Code Formats section (page 13).
Nominal
CCT
CRI Minimum Luminous Flux 2-Step 3-Step 4-Step
Min Typ Group 


 Group Order Code Group Order Code Group Order Code
6500K
70 75
W2 4860 5593
65F
CXA1850-0000-
000N00W265F
W4 5225 6014 CXA1850-0000-
000N00W465F
X2 5590 6434 CXA1850-0000-
000N00X265F
80 ---
W2 4860 5593
65F
CXA1850-0000-
000N0HW265F
W4 5225 6014 CXA1850-0000-
000N0HW465F
5700K
70 75
W2 4860 5593
57F
CXA1850-0000-
000N00W257F
W4 5225 6014 CXA1850-0000-
000N00W457F
X2 5590 6434 CXA1850-0000-
000N00X257F
80 ---
W2 4860 5593
57F
CXA1850-0000-
000N0HW257F
W4 5225 6014 CXA1850-0000-
000N0HW457F
5000K
70 75
W2 4860 5593
50H
CXA1850-0000-
000N00W250H
50F
CXA1850-0000-
000N00W250F
W4 5225 6014 CXA1850-0000-
000N00W450H
CXA1850-0000-
000N00W450F
X2 5590 6434 CXA1850-0000-
000N00X250H
CXA1850-0000-
000N00X250F
80 ---
W2 4860 5593
50H
CXA1850-0000-
000N0HW250H 50G
CXA1850-0000-
000N0HW250G 50F
CXA1850-0000-
000N0HW250F
W4 5225 6014 CXA1850-0000-
000N0HW450H
CXA1850-0000-
000N0HW450G
CXA1850-0000-
000N0HW450F
4000K
70 75
W2 4860 5593
40H
CXA1850-0000-
000N00W240H
40F
CXA1850-0000-
000N00W240F
W4 5225 6014 CXA1850-0000-
000N00W440H
CXA1850-0000-
000N00W440F
X2 5590 6434 CXA1850-0000-
000N00X240H
CXA1850-0000-
000N00X240F
80 ---
V4 4545 5231
40H
CXA1850-0000-
000N0HV440H 40G
CXA1850-0000-
000N0HV440G 40F
CXA1850-0000-
000N0HV440F
W2 4860 5593 CXA1850-0000-
000N0HW240H
CXA1850-0000-
000N0HW240G
CXA1850-0000-
000N0HW240F
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
4
XLamp® CXa1850 LED
Notes
• Creemaintainsatoleranceof±7%onuxandpowermeasurements,±0.005onchromaticity(CCx,CCy)measurementsandatoleranceof±2onCRI
measurements. See the Measurements section (page 15).
• CreeXLampCXA1850LEDordercodesspecifyonlyaminimumuxbinandnotamaximum.Creemayshipreelsinuxbinshigherthantheminimum
speciedbytheordercodewithoutadvancenotice.Shipmentswillalwaysadheretothechromaticitybinrestrictionsspeciedbytheordercode.
* Fluxvalues@25°Carecalculatedandforreferenceonly.
Nominal
CCT
CRI Minimum Luminous Flux 2-Step 3-Step 4-Step
Min Typ Group 


 Group Order Code Group Order Code Group Order Code
3500K
80 ---
V2 4230 4868
35H
CXA1850-0000-
000N00V235H
35G
CXA1850-0000-
000N00V235G
35F
CXA1850-0000-
000N00V235F
V4 4545 5231 CXA1850-0000-
000N00V435H
CXA1850-0000-
000N00V435G
CXA1850-0000-
000N00V435F
W2 4860 5593 CXA1850-0000-
000N00W235H
CXA1850-0000-
000N00W235G
CXA1850-0000-
000N00W235F
93 95
T2 3200 3683
35H
CXA1850-0000-
000N0YT235H 35G
CXA1850-0000-
000N0YT235G 35F
CXA1850-0000-
000N0YT235F
T4 3440 3959 CXA1850-0000-
000N0YT435H
CXA1850-0000-
000N0YT435G
CXA1850-0000-
000N0YT435F
3000K
80 ---
V2 4230 4868
30H
CXA1850-0000-
000N00V230H 30G
CXA1850-0000-
000N00V230G 30F
CXA1850-0000-
000N00V230F
V4 4545 5231 CXA1850-0000-
000N00V430H
CXA1850-0000-
000N00V430G
CXA1850-0000-
000N00V430F
93 95
T2 3200 3683
30H
CXA1850-0000-
000N0YT230H 30G
CXA1850-0000-
000N0YT230G 30F
CXA1850-0000-
000N0YT230F
T4 3440 3959 CXA1850-0000-
000N0YT430H
CXA1850-0000-
000N0YT430G
CXA1850-0000-
000N0YT430F
2700K
80 ---
U4 3955 4354
27H
CXA1850-0000-
000N00U427H
27G
CXA1850-0000-
000N00U427G
27F
CXA1850-0000-
000N00U427F
V2 4230 4868 CXA1850-0000-
000N00V227H
CXA1850-0000-
000N00V227G
CXA1850-0000-
000N00V227F
V4 4545 5231 CXA1850-0000-
000N00V427H
CXA1850-0000-
000N00V427G
CXA1850-0000-
000N00V427F
93 95
S4 2990 3291
27H
CXA1850-0000-
000N0YS427H 27G
CXA1850-0000-
000N0YS427G 27F
CXA1850-0000-
000N0YS427F
T2 3200 3683 CXA1850-0000-
000N0YT227H
CXA1850-0000-
000N0YT227G
CXA1850-0000-
000N0YT227F
FLUX CHARACTERISTICS, EASYWHITE® ORDER CODES AND BINS (IF mA, TJ 
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
5
XLamp® CXa1850 LED
Notes
• Creemaintainsatoleranceof±7%onuxandpowermeasurements,±0.005onchromaticity(CCx,CCy)measurementsandatoleranceof±2onCRI
measurements. See the Measurements section (page 15).
• CreeXLampCXA1850LEDordercodesspecifyonlyaminimumuxbinandnotamaximum.Creemayshipreelsinuxbinshigherthantheminimum
speciedbytheordercodewithoutadvancenotice.Shipmentswillalwaysadheretothechromaticitybinrestrictionsspeciedbytheordercode.
* Fluxvalues@25°Carecalculatedandforreferenceonly.
FLUX CHARACTERISTICS, ANSI WHITE ORDER CODES AND BINS (IF mA, TJ 
The following table provides order codes for XLamp CXA1850 LEDs. For a complete description of the order code nomenclature, see the
Bin and Order Code Formats section (page 13).
Nominal
CCT
CRI Minimum Luminous Flux
Chromaticity Regions Order Code
Min Typ Group 



6500K
70 75
W2 4860 5593
1A0, 1B0, 1C0, 1D0, 65F
CXA1850-0000-000N00W20E1
W4 5225 6014 CXA1850-0000-000N00W40E1
X2 5590 6434 CXA1850-0000-000N00X20E1
80 ---
W2 4860 5593
1A0, 1B0, 1C0, 1D0, 65F
CXA1850-0000-000N0HW20E1
W4 5225 6014 CXA1850-0000-000N0HW40E1
5700K
70 75
W2 4860 5593
2A0, 2B0, 2C0, 2D0, 57F
CXA1850-0000-000N00W20E2
W4 5225 6014 CXA1850-0000-000N00W40E2
X2 5590 6434 CXA1850-0000-000N00X20E2
80 ---
W2 4860 5593
2A0, 2B0, 2C0, 2D0, 57F
CXA1850-0000-000N0HW20E2
W4 5225 6014 CXA1850-0000-000N0HW40E2
5000K
70 75
W2 4860 5593
3A0, 3B0, 3C0, 3D0, 50F
CXA1850-0000-000N00W20E3
W4 5225 6014 CXA1850-0000-000N00W40E3
X2 5590 6434 CXA1850-0000-000N00X20E3
80 ---
W2 4860 5593
3A0, 3B0, 3C0, 3D0, 50F
CXA1850-0000-000N0HW20E3
W4 5225 6014 CXA1850-0000-000N0HW40E3
4000K 70 75
W2 4860 5593
5A0, 5B0, 5C0, 5D0, 40F
CXA1850-0000-000N00W20E5
W4 5225 6014 CXA1850-0000-000N00W40E5
X2 5590 6434 CXA1850-0000-000N00X20E5
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
6
XLamp® CXa1850 LED
RELATIVE SPECTRAL POWER DISTRIBUTION
Thefollowinggraphistheresultofaseriesofpulsedmeasurementsat1400mAandTJ=85°C.
ELECTRICAL CHARACTERISTICS
The following graph is the result of a series of steady-state measurements.
Relative Spectral Power Distribution - White, Hot Binned, Baby
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
380 430 480 530 580 630 680 730 780
Relative Spectral Power
Wavelength (nm)
5000 K, 70 CRI
4000 K, 70 CRI
3000 K, 80 CRI
3000 K, 93 CRI
32
33
34
35
36
37
38
500 700 900 1100 1300 1500 1700 1900 2100
Voltage (V)
Current (mA)
Tc = 25 °C
Tc = 55 °C
Tc = 85 °C
Tc = 105 °C
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
7
XLamp® CXa1850 LED
RELATIVE LUMINOUS FLUX
Therelativeluminousuxvaluesprovidedbelowaretheratioof:
• Measurements of CXA1850 at steady-state operation at the given conditions, divided by
• Fluxmeasuredduringbinning,whichisapulsedmeasurementat1400mAatTJ=85°C.
Forexample,atsteady-stateoperationofTc=55°C,IF=1700mA,therelativeluminousuxratiois120%inthechartbelow.ACXA1850
LEDthatmeasures5590lmduringbinningwilldeliver6708lm(5590*1.2)atsteady-stateoperationofTc=55°C,IF=1700mA.
0%
20%
40%
60%
80%
100%
120%
140%
160%
500 700 900 1100 1300 1500 1700 1900 2100
Relative Luminous Flux
Current (mA)
Tc = 25 °C
Tc = 55 °C
Tc = 85 °C
Tc = 105 °C
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
8
XLamp® CXa1850 LED
TYPICAL SPATIAL DISTRIBUTION
PERFORMANCE GROUPS - BRIGHTNESS (IF mA, TJ 
XLampCXA1850LEDsaretestedforluminousuxandplacedintooneofthefollowingbins.
Group Code Minimum Luminous Flux Maximum Luminous Flux
S4 2990 3200
T2 3200 3440
T4 3440 3680
U2 3680 3955
U4 3955 4230
V2 4230 4545
V4 4545 4860
W2 4860 5225
W4 5225 5590
X2 5590 6010
X4 6010 6430
Far Field
0%
20%
40%
60%
80%
100%
-90 -70 -50 -30 -10 10 30 50 70 90
Relative Luminous Intensity
Angle (º)
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
9
XLamp® CXa1850 LED
PERFORMANCE GROUPS - CHROMATICITY (TJ 
XLampCXA1850LEDsaretestedforchromaticityandplacedintooneoftheregionsdenedbythefollowingboundingcoordinates.
EasyWhite Color Temperatures – 2-Step
Code CCT x y
50H 5000K
0.3429 0.3507
0.3434 0.3571
0.3475 0.3604
0.3469 0.3539
40H 4000K
0.3784 0.3741
0.3804 0.3818
0.3867 0.3857
0.3844 0.3778
35H 3500K
0.4030 0.3857
0.4061 0.3941
0.4132 0.3976
0.4099 0.3890
30H 3000K
0.4291 0.3973
0.4333 0.4062
0.4395 0.4084
0.4351 0.3994
27H 2700K
0.4528 0.4046
0.4578 0.4138
0.4638 0.4152
0.4586 0.4060
EasyWhite Color Temperatures – 3-Step Ellipse
Bin Code CCT Center Point Major Axis Minor Axis Rotation Angle

x y a b
50G 5000K 0.3447 0.3553 0.00840 0.00312 65.0
40G 4000K 0.3818 0.3797 0.00939 0.00402 53.7
35G 3500K 0.4073 0.3917 0.00927 0.00414 54.0
30G 3000K 0.4338 0.4030 0.00834 0.00408 53.2
27G 2700K 0.4577 0.4099 0.00834 0.00420 48.5
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
10
XLamp® CXa1850 LED
PERFORMANCE GROUPS - CHROMATICITY (TJ 
EasyWhite Color Temperatures – 4-Step
Code CCT x y
65F 6500K
0.3097 0.3196
0.3079 0.3297
0.3164 0.3382
0.3176 0.3275
57F 5700K
0.3253 0.3325
0.3249 0.3439
0.3331 0.3514
0.3330 0.3393
50F 5000K
0.3407 0.3459
0.3415 0.3586
0.3499 0.3654
0.3484 0.3521
40F 4000K
0.3744 0.3685
0.3782 0.3837
0.3912 0.3917
0.3863 0.3758
35F 3500K
0.3981 0.3800
0.4040 0.3966
0.4186 0.4037
0.4116 0.3865
30F 3000K
0.4242 0.3919
0.4322 0.4096
0.4449 0.4141
0.4359 0.3960
27F 2700K
0.4475 0.3994
0.4573 0.4178
0.4695 0.4207
0.4589 0.4021
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
11
XLamp® CXa1850 LED
PERFORMANCE GROUPS - CHROMATICIT (TJ
ANSI White Bins
Code CCT Bin
Code x y
0E1 6500K
1A0
0.3048 0.3207
0.3130 0.3290
0.3144 0.3186
0.3068 0.3113
1B0
0.3028 0.3304
0.3115 0.3391
0.3130 0.3290
0.3048 0.3207
1C0
0.3115 0.3391
0.3205 0.3481
0.3213 0.3373
0.3130 0.3290
1D0
0.3130 0.3290
0.3213 0.3373
0.3221 0.3261
0.3144 0.3186
ANSI White Bins
Code CCT Bin
Code x y
0E2 5700K
2A0
0.3215 0.3350
0.3290 0.3417
0.3290 0.3300
0.3222 0.3243
2B0
0.3207 0.3462
0.3290 0.3538
0.3290 0.3417
0.3215 0.3350
2C0
0.3290 0.3538
0.3376 0.3616
0.3371 0.3490
0.3290 0.3417
2D0
0.3290 0.3417
0.3371 0.3490
0.3366 0.3369
0.3290 0.3300
ANSI White Bins
Code CCT Bin
Code x y
0E5 4000K
5A0
.3670 .3578
.3702 .3722
.3825 .3798
.3783 .3646
5B0
.3702 .3722
.3736 .3874
.3869 .3958
.3825 .3798
5C0
.3825 .3798
.3869 .3958
.4006 .4044
.3950 .3875
5D0
.3783 .3646
.3825 .3798
.3950 .3875
.3898 .3716
ANSI White Bins
Code CCT Bin
Code x y
0E3 5000K
3A0
.3371 .3490
.3451 .3554
.3440 .3427
.3366 .3369
3B0
.3376 .3616
.3463 .3687
.3451 .3554
.3371 .3490
3C0
.3463 .3687
.3551 .3760
.3533 .3620
.3451 .3554
3D0
.3451 .3554
.3533 .3620
.3515 .3487
.3440 .3427
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
12
XLamp® CXa1850 LED
CREE EASYWHITE® BINS PLOTTED ON THE CIE 1931 COLOR SPACE (TJ 
CREE ANSI WHITE BINS PLOTTED ON THE CIE 1931 COLOR SPACE (TJ 
2700 K
3000 K
3500 K
4000 K
4500 K
5000 K
5700 K
6500 K
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.45
0.46
0.47
0.48
0.49
CCy
ANSI C78.377 Quadrangle
EasyWhite 4-Step
EasyWhite 3-Step
EasyWhite 2-Step
4000 K
4500 K
5000 K
5700 K
6500 K
3A
3B
3C
3D
5A
5B
5C
5D
1A
1B
1C
1D
2A
2B
2C
2D
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.30
0.31
0.32
0.33
0.34
0.35
0.36
0.37
0.38
0.39
0.40
0.41
CCy
CCx
ANSI C78.377 Quadrangle
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
13
XLamp® CXa1850 LED
BIN AND ORDER CODE FORMATS
Bincodesandordercodesareconguredasfollows:
Order Code Bin Code
SSSSSCC-HHHH-HHHGGRNNNNN
Series = CXA18
Internal code
CRI Specification
0 = Standard CRI
H = 80 CRI minimum
Y = 93 CRI minimum
Kit code
Vf class
N0 = 36-V class
Performance class
SSSSSCC-WWW-FF-GGR-AAAAA
Series = CXA18
Chromaticity bin
Vf class
N0 = 36-V class
Internal code
CRI Specification
B = 70 CRI minimum
H = 80 CRI minimum
Y = 93 CRI minimum
Flux bin
Performance class
MECHANICAL DIMENSIONS
Dimensions are in mm.
Tolerances unless otherwise
specied:±.13
x°±1°
Meaning of 1850N
1850N = 36-V CXA1850
SIZE
TITLE
OF
REV.
SHEET
C
DRAWING NO.
DATE
DATE
DATE
CHECK
FINAL PROTECTIVE FINISH
MATERIAL
APPROVED
DRAWN BY
THIRD ANGLE PROJECTION
SCALE
A
B
C
D
123456
6 5 4 3 2 1
A
B
C
D
Phone (919) 313-5300
Fax (919) 313-5558
4600 Silicon Drive
Durham, N.C 27703
UNAUTHORIZED PERSON WITHOUT
THE WRITTEN CONSENT
MAY NOT BE COPIED, REPRODUCED OR DISCLOSED TO ANY
CONFIDENTIAL INFORMATION OF CREE, INC. THIS PLOT
CONTAINED WITHIN ARE THE PROPRIETARY AND
CREE CONFIDENTIAL. THIS PLOT AND THE INFORMATION
OF CREE INC.
NOTICE
X° ± .5°
.XXX ± .25
.XX ± .75
.X ± 1.5
FOR SHEET METAL PARTS ONLY
.XX ± .25
.XXX ± .125
X° ± .5°
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN
MILLIMETERS AND AFTER FINISH.
TOLERANCE UNLESS SPECIFIED:
SURFACE FINISH:
1.6
17.85
± 0.2
17.85
± 0.2
1.00 ± .15
0.55 ± 0.1
1.22
2.60
2.60
1.22
2.60
1.23
2.60
1.23
4.52
6.92
R.500
1.300
± 0.2
12.00
± 0.2
14.00
2/18.000
B
CXA1850
CXA1850 MARKETING SPEC
12/19/13D. CRONIN
REVISONS
REV DESCRIPTION BY DATE APP'D
TOLERANCE UNLESS OTHERWISE SPECIFIED:
DIMENSIONS ARE IN MM
.X ± .10
.XX ± .03
.XXX ± .010
X° ± 1 °
OPTICAL REFERENCE
OPTICAL
REFERENCE
Tc
1850N
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
14
XLamp® CXa1850 LED
THERMAL DESIGN
The CXA family of LED arrays can include over a hundred different LED die inside one package, and thus over a hundred different junction
temperatures (TJ). Cree has intentionally removed junction-temperature-based operating limits and replaced the commonplace maximum
TJ calculations with maximum ratings based on forward current (IF) and case temperature (Tc). No additional calculations are required to
ensurethattheCXALEDisbeingoperatedwithinitsdesignedlimits.LEStemperaturemeasurementprovidesadditionalvericationof
goodthermaldesign.Pleaserefertopage2fortheOperatingLimitspecications.
There is no need to calculate for TJinsidethepackage,asthethermalmanagementdesignprocess,specicallyfromTSP to ambient
(Ta), remains identical to any other LED component. For more information on thermal management of Cree XLamp LEDs, please refer to
the Thermal Management application note. For CXA soldering recommendations and more information on thermal interface materials
(TIM), LES temperature measurement, and connection methods, please refer to the Cree XLamp CX Family LEDs soldering and handling
document. The CX Family LED Design Guide provides basic information on the requirements to use Cree XLamp CXA LEDs successfully
in luminaire designs.
To keep the CXA1850 LED at or below the maximum rated Tc, the case to ambient temperature
thermal resistance (R_c-a) must be at or below the maximum R_c-a value shown on the following
graph, depending on the operating environment. The y-axis in the graph is a base 10 logarithmic
scale.
Asthegureatrightshows,theR_c-avalueisthesumofthethermalresistanceoftheTIM(R_tim)
plus the thermal resistance of the heat sink (R_hs).
R_j-c
Tc
R_tim
R_hs
Ta
R_j-c
Tc
R_c-a
Ta
CXA1850
0.01
0.10
1.00
10.00
500 700 900 1100 1300 1500 1700 1900 2100
Maximum R_c-a
Current (mA)
Ta = 25 °C
Ta = 55 °C
Ta = 85 °C
Ta = 105 °C
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
15
XLamp® CXa1850 LED
NOTES
Measurements
Theluminousux,radiantpower,chromaticity,forwardvoltageandCRImeasurementsinthisdocumentarebinningspecicationsonly
and solely represent product measurements as of the date of shipment. These measurements will change over time based on a number
offactorsthatarenotwithinCree’scontrolandarenotintendedorprovidedasoperationalspecicationsfortheproducts.Calculated
valuesareprovidedforinformationalpurposesonlyandarenotintendedorprovidedasspecications.

Please read the LED Reliability OverviewfordetailsofthequalicationprocessCreeappliestoensurelong-termreliabilityforXLamp
LEDsanddetailsofCree’spre-releasequalicationtestingforXLampLEDs.
Lumen Maintenance
CreenowusesstandardizedIESLM-80-08andTM-21-11methodsforcollectinglong-termdataandextrapolatingLEDlumenmaintenance.
ForinformationonthespecicLM-80datasetsavailableforthisLED,refertothepublicLM-80 results document.
Please read the Long-Term Lumen Maintenance application note for more details on Cree’s lumen maintenance testing and forecasting.
Please read the Thermal Management application note for details on how thermal design, ambient temperature, and drive current affect
the LED junction temperature.
RoHS Compliance
The levels of RoHS restricted materials in this product are below the maximum concentration values (also referred to as the threshold
limits) permitted for such substances, or are used in an exempted application, in accordance with EU Directive 2011/65/EC (RoHS2), as
implemented January 2, 2013. RoHS Declarations for this product can be obtained from your Cree representative or from the Product
Ecology section of the Cree website.
REACh Compliance
REACh substances of very high concern (SVHCs) information is available for this product. Since the European Chemical Agency (ECHA)
has published notice of their intent to frequently revise the SVHC listing for the foreseeable future, please contact a Cree representative
to insure you get the most up-to-date REACh Declaration. REACh banned substance information (REACh Article 67) is also available upon
request.
UL® Recognized Component
This product meets the requirements to be considered a UL Recognized Component with Level 4 enclosure consideration. The LED
packageoraportionthereofhasbeeninvestigatedasareandelectricalenclosureperANSI/UL8750.
Vision Advisory
WARNING: Do not look at an exposed lamp in operation. Eye injury can result. For more information about LEDs and eye safety, please
refer to the LED Eye Safety application note.
Copyright © 2014-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree®, XLamp® and EasyWhite® are registered trademarks and the Cree logo is a
trademark of Cree, Inc. UL® and the UR logo are registered trademarks of UL LLC.
16
XLamp® CXa1850 LED
PACKAGING
Cree CXA1850 LEDs are packaged in trays of 20. Two trays are sealed in an anti-static bag and placed inside a carton, for a total of 40
LEDs per carton. Each carton contains 40 LEDs from the same performance bin.
Dimensions are in inches.
Tolerances: ±.13
x°±1°
SIZE
TITLE
OF
REV.
SHEET
C
DRAWING NO.
DATE
DATE
DATE
CHECK
FINAL PROTECTIVE FINISH
MATERIAL
APPROVED
DRAWN BY
THIRD ANGLE PROJECTION
SCALE
A
B
C
D
123456
6 5 4 3 2 1
A
B
C
D
Phone (919) 313-5300
Fax (919) 313-5558
4600 Silicon Drive
Durham, N.C 27703
UNAUTHORIZED PERSON WITHOUT
THE WRITTEN CONSENT
MAY NOT BE COPIED, REPRODUCED OR DISCLOSED TO ANY
CONFIDENTIAL INFORMATION OF CREE, INC. THIS PLOT
CONTAINED WITHIN ARE THE PROPRIETARY AND
CREE CONFIDENTIAL. THIS PLOT AND THE INFORMATION
OF CREE INC.
NOTICE
X° ± .5 °
.XXX ± .25
.XX ± .75
.X ± 1.5
FOR SHEET METAL PARTS ONLY
.XX ± .25
.XXX ± .125
X° ± .5 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN
MILLIMETERS AND AFTER FINISH.
TOLERANCE UNLESS SPECIFIED:
SURFACE FINISH:
1.6
7.125
7.625
1.125
R.375
1.063
2/28.000
A
CXA1850
LE1801 MARKETING SPEC
05/08/12D. CRONIN
REVISONS
REV DESCRIPTION BY DATE APP'D
LABEL WITH CREE BIN CODE,
QUANTITY, LOT #
PATENT LABEL
IS LOCATED ON UNDERSIDE
OF COVER
LABEL WITH CREE BIN CODE,
QTY, LOT #
LABEL WITH CREE BIN CODE,
QTY, LOT #
BAG
SIZE
TITLE
OF
REV.
SHEET
C
DRAWING NO.
DATE
DATE
DATE
CHECK
FINAL PROTECTIVE FINISH
MATERIAL
APPROVED
DRAWN BY
THIRD ANGLE PROJECTION
SCALE
A
B
C
D
123456
6 5 4 3 2 1
A
B
C
D
Phone (919) 313-5300
Fax (919) 313-5558
4600 Silicon Drive
Durham, N.C 27703
UNAUTHORIZED PERSON WITHOUT
THE WRITTEN CONSENT
MAY NOT BE COPIED, REPRODUCED OR DISCLOSED TO ANY
CONFIDENTIAL INFORMATION OF CREE, INC. THIS PLOT
CONTAINED WITHIN ARE THE PROPRIETARY AND
CREE CONFIDENTIAL. THIS PLOT AND THE INFORMATION
OF CREE INC.
NOTICE
X° ± .5 °
.XXX ± .25
.XX ± .75
.X ± 1.5
FOR SHEET METAL PARTS ONLY
.XX ± .25
.XXX ± .125
X° ± .5 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN
MILLIMETERS AND AFTER FINISH.
TOLERANCE UNLESS SPECIFIED:
SURFACE FINISH:
1.6
7.125
7.625
1.125
R.375
1.063
2/28.000
A
CXA1850
LE1801 MARKETING SPEC
05/08/12D. CRONIN
REVISONS
REV DESCRIPTION BY DATE APP'D
LABEL WITH CREE BIN CODE,
QTY, LOT #
PATENT LABEL
IS LOCATED ON UNDERSIDE
OF COVER
LABEL WITH CREE BIN CODE,
QTY, LOT #
LABEL WITH CREE BIN CODE,
QTY, LOT #
BAG
PATENT LABEL IS LOCATED
ON UNDERSIDE OF CARTON
LABEL WITH CREE BIN
CODE, QUANTITY, LOT #
SIZE
TITLE
OF
REV.
SHEET
C
DRAWING NO.
DATE
DATE
DATE
CHECK
FINAL PROTECTIVE FINISH
MATERIAL
APPROVED
DRAWN BY
THIRD ANGLE PROJECTION
.X ± 0.1
X° ± 2 °
.XXX ± .010
.XX ± .03
.X ± .06
FOR SHEET METAL PARTS ONLY
.XX ± .05
.XXX ± .005
X° ± 1 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN
MILLIMETERS & BEFORE FINISH.
TOLERANCE UNLESS SPECIFIED:
SCALE
A
B
C
D
123456
6 5 4 3 2 1
A
B
C
D
Phone (919) 361-4770
Fax (919) 313-5303
4600 Silicon Drive
Durham, N.C 27703
UNAUTHORIZED PERSON WITHOUT
THE WRITTEN CONSENT
MAY NOT BE COPIED, REPRODUCED OR DISCLOSED TO ANY
CONFIDENTIAL INFORMATION OF CREE, INC. THIS PLOT
CONTAINED WITHIN ARE THE PROPRIETARY AND
CREE CONFIDENTIAL. THIS PLOT AND THE INFORMATION
OF CREE INC.
NOTICE
5.875
5.875
.38
R.375
.875
.875
1/10.500
A
CXA15XX_DATASHEET_BAG2013
CXA15XX_DATASHEET
BAG
LABEL WITH CREE BIN
CODE, QUANTITY, LOT #
LABEL WITH CREE BIN
CODE, QUANTITY, LOT #
LABEL WITH CREE BIN
CODE, QUANTITY, LOT #
PATENT LABEL IS LOCATED
ON UNDERSIDE OF COVER
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Cree, Inc.:
CXA1850-0000-000N00U427F CXA1850-0000-000N00U427H CXA1850-0000-000N00V227F CXA1850-0000-
000N00V227H CXA1850-0000-000N00V230F CXA1850-0000-000N00V230H CXA1850-0000-000N00V235F
CXA1850-0000-000N00V235H CXA1850-0000-000N00V427F CXA1850-0000-000N00V427H CXA1850-0000-
000N00V430F CXA1850-0000-000N00V430H CXA1850-0000-000N00V435F CXA1850-0000-000N00V435H
CXA1850-0000-000N00W20E1 CXA1850-0000-000N00W20E2 CXA1850-0000-000N00W20E3 CXA1850-0000-
000N00W20E5 CXA1850-0000-000N00W230F CXA1850-0000-000N00W230H CXA1850-0000-000N00W235F
CXA1850-0000-000N00W235H CXA1850-0000-000N00W240F CXA1850-0000-000N00W240H CXA1850-0000-
000N00W250F CXA1850-0000-000N00W250H CXA1850-0000-000N00W257F CXA1850-0000-000N00W265F
CXA1850-0000-000N00W40E1 CXA1850-0000-000N00W40E2 CXA1850-0000-000N00W40E3 CXA1850-0000-
000N00W40E5 CXA1850-0000-000N00W440F CXA1850-0000-000N00W440H CXA1850-0000-000N00W450F
CXA1850-0000-000N00W450H CXA1850-0000-000N00W457F CXA1850-0000-000N00W465F CXA1850-0000-
000N00X20E1 CXA1850-0000-000N00X20E2 CXA1850-0000-000N00X20E3 CXA1850-0000-000N00X20E5
CXA1850-0000-000N00X240F CXA1850-0000-000N00X240H CXA1850-0000-000N00X250F CXA1850-0000-
000N00X250H CXA1850-0000-000N00X257F CXA1850-0000-000N00X265F CXA1850-0000-000N0HW20E1
CXA1850-0000-000N0HW20E2 CXA1850-0000-000N0HW20E3 CXA1850-0000-000N0HW20E5 CXA1850-0000-
000N0HW240F CXA1850-0000-000N0HW240H CXA1850-0000-000N0HW250F CXA1850-0000-000N0HW250H
CXA1850-0000-000N0HW257F CXA1850-0000-000N0HW265F CXA1850-0000-000N0HW40E1 CXA1850-0000-
000N0HW40E2 CXA1850-0000-000N0HW40E3 CXA1850-0000-000N0HW40E5 CXA1850-0000-000N0HW440F
CXA1850-0000-000N0HW440H CXA1850-0000-000N0HW450F CXA1850-0000-000N0HW450H CXA1850-0000-
000N0HW457F CXA1850-0000-000N0HW465F CXA1850-0000-000N0HX20E1 CXA1850-0000-000N0HX20E2
CXA1850-0000-000N0HX20E3 CXA1850-0000-000N0HX20E5 CXA1850-0000-000N0HX240F CXA1850-0000-
000N0HX240H CXA1850-0000-000N0HX250F CXA1850-0000-000N0HX250H CXA1850-0000-000N0HX257F
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