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cld-ds120 rev 1d cree ? xlamp ? cxb1820 led pro duc t d escrip tion the xlamp ? cxb1820 l e d array is a member of the second generation of the cxa family that delivers up to 30% higher effcacy and up to 20% higher lumens than the frst generation in the same l e s. the higher performance second generation cxa l e d arrays provide a drop-in performance upgrade to existing cxa l e d designs to shorten product development time. in addition, the cxb l e ds also allow lighting manufacturers to achieve the same or better performance with a smaller le s, enabling a smaller, more impactful luminaire. available in 2 - step, 3- step and 5-step e asywhite ? bins, the cxb1820 le d delivers high lumen output and high effcacy in a single, easy?to?use package that eliminates the need for refow soldering. the cx family l e d design guide provides basic information on the requirements to use the cxb1820 l ed successfully in luminaire designs. fe atures ? 12- mm optical source ? mechanical and optical design consistent with other cxa18 and cxb18 leds with a 12-mm optical source ? available in 70-, 80- and 90-minimum cri options ? cree easywhite ? 2-, 3- and 5-step binning ? forward voltage option: 36 -v class ? 85?c binning and characterization ? e xtremely uniform color over viewing angle ? top-side solder connections ? thermocouple attach point ? nema ssl ? 3 2011 standard fux bins ? rohs and re ach compliant ? ul ? recognized component (e349212) t able of cont e nts characteristics ............................................ 2 operating limits .......................................... 2 flux characteristics, easywhite ? order codes and bins ........................................... 3 relative spectral power distribution ......... 5 e lectrical characteristics ............................ 6 relative luminous flux ............................... 7 typical spatial distribution ......................... 8 performance groups - brightness ............. 8 performance groups - chromaticity .......... 9 cree easywhite ? bins plotted on the 1931 cie color space .............................. 10 bin and order code formats ................... 12 mechanical dimensions .......................... 12 thermal design ........................................ 13 notes ........................................................ 14 packaging ................................................. 15 product family data sheet copyright ? 2015-2016 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 . c om/x lamp
2 chara c teristics characteristics unit minimum t ypical maximum viewing angle (fwhm) degrees 115 e sd withstand voltage (hbm per mil-std-883d) v 8000 dc forward current ma 1050* reverse current ma 0.1 forward voltage (@ 550?ma, 85?c) v 35 38 * refer to the operating limits section. ope rating li m its the maximum current rating of the cxb1820 is dependent on the case temperature (tc) when the l e d 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 12 for the location of the tc measurement point. cxb1820 0 200 400 600 800 1000 1200 0 25 50 75 100 125 150 if (ma) case temperature ( c) cxb1820 copyright ? 2015-2016 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. xlamp ? cxb1820 led
3 notes ? cree maintains a tolerance of 7% on fux and power measurements, 0.005 on chromaticity (ccx, ccy) measurements and a tolerance of 2 on cri measurements. see the measurements section (page 14). ? cree xlamp cxb1820 led order codes specify only a minimum fux bin and not a maximum. cree may ship reels in fux bins higher than the minimum specifed by the order code without advance notice. shipments will always adhere to the chromaticity bin restrictions specifed by the order code. * for 80 cri minimum l e ds, cri r9 minimum is 0 with a 2 tolerance. for 90 cri minimum leds, cri r9 typical is 60. ** flux values @ 25?c are calculated and for reference only. fl ux chara c teristic s, easywhite ? o rde r code s and bins ( i f = 550? m a , t j = 85?c) the following table provides order codes for xlamp cxb1820 l e ds. for a complete description of the order code nomenclature, please see the bin and order code formats section (page 12). nominal cc t cri* minimum luminous flux 2-step 3-step 5-step min t yp g roup flux (lm) @ 85?c flux (lm) @ 25?c** g roup o rder code g roup o rder code g roup o rder code g roup o rder code 6500?k 70 --- s2 2780 3050 65e cxb1820-0000- 000n0bs265e s4 2990 3280 cxb1820-0000- 000n0bs465e 80 --- s2 2780 3050 65e cxb1820-0000- 000n0hs265e s4 2990 3280 cxb1820-0000- 000n0hs465e 5700?k 70 --- s2 2780 3050 57e cxb1820-0000- 000n0bs257e s4 2990 3280 cxb1820-0000- 000n0bs457e 80 --- s2 2780 3050 57e cxb1820-0000- 000n0hs257e s4 2990 3280 cxb1820-0000- 000n0hs457e 5000?k 70 --- s2 2780 3050 50e cxb1820-0000- 000n0bs250e s4 2990 3280 cxb1820-0000- 000n0bs450e 80 --- s2 2780 3050 50g cxb1820-0000- 000n0hs250g 50e cxb1820-0000- 000n0hs250e s4 2990 3280 cxb1820-0000- 000n0hs450g cxb1820-0000- 000n0hs450e 90 92 r2 2420 2655 50g cxb1820-0000- 000n0ur250g r4 2600 2852 cxb1820-0000- 000n0ur450g 4000?k 70 --- s2 2780 3050 40e cxb1820-0000- 000n0bs240e s4 2990 3280 cxb1820-0000- 000n0bs440e 80 --- r4 2600 2852 40h cxb1820-0000- 000n0hr440h 40g cxb1820-0000- 000n0hr440g s2 2780 3050 cxb1820-0000- 000n0hs240h cxb1820-0000- 000n0hs240g 90 92 q4 2260 2479 40h cxb1820-0000- 000n0uq440h 40g cxb1820-0000- 000n0uq440g r2 2420 2655 cxb1820-0000- 000n0ur240h cxb1820-0000- 000n0ur240g copyright ? 2015-2016 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. xlamp ? cxb1820 led
4 notes ? cree maintains a tolerance of 7% on fux and power measurements, 0.005 on chromaticity (ccx, ccy) measurements and a tolerance of 2 on cri measurements. see the measurements section (page 14). ? cree xlamp cxb1820 led order codes specify only a minimum fux bin and not a maximum. cree may ship reels in fux bins higher than the minimum specifed by the order code without advance notice. shipments will always adhere to the chromaticity bin restrictions specifed by the order code. * for 80 cri minimum l e ds, cri r9 minimum is 0 with a 2 tolerance. for 90 cri minimum leds, cri r9 typical is 60. ** flux values @ 25?c are calculated and for reference only. nominal cc t cri* minimum luminous flux 2-step 3-step 5-step min t yp g roup flux (lm) @ 85?c flux (lm) @ 25?c** g roup o rder code g roup o rder code g roup o rder code g roup o rder code 3500?k 80 --- r4 2600 2852 35h cxb1820-0000- 000n0hr435h 35g cxb1820-0000- 000n0hr435g s2 2780 3050 cxb1820-0000- 000n0hs235h cxb1820-0000- 000n0hs235g 90 92 q4 2260 2479 35h cxb1820-0000- 000n0uq435h 35g cxb1820-0000- 000n0uq435g r2 2420 2655 cxb1820-0000- 000n0ur235h cxb1820-0000- 000n0ur235g 3000?k 80 --- r2 2420 2655 30h cxb1820-0000- 000n0hr230h 30g cxb1820-0000- 000n0hr230g r4 2600 2852 cxb1820-0000- 000n0hr430h cxb1820-0000- 000n0hr430g 90 92 q2 2100 2304 30h cxb1820-0000- 000n0uq230h 30g cxb1820-0000- 000n0uq230g q4 2260 2479 cxb1820-0000- 000n0uq430h cxb1820-0000- 000n0uq430g 90 92 p4 1965 2156 30q 30u cxb1820-0000- 000n0up430u q2 2100 2304 cxb1820-0000- 000n0uq230q cxb1820-0000- 000n0uq230u q4 2260 2479 cxb1820-0000- 000n0uq430q cxb1820-0000- 000n0uq430u 2700?k 80 --- r2 2420 2655 27h cxb1820-0000- 000n0hr227h 27g cxb1820-0000- 000n0hr227g r4 2600 2852 cxb1820-0000- 000n0hr427h cxb1820-0000- 000n0hr427g 90 92 p4 1965 2156 27h cxb1820-0000- 000n0up427h 27g cxb1820-0000- 000n0up427g q2 2100 2304 cxb1820-0000- 000n0uq227h cxb1820-0000- 000n0uq227g fl ux chara c teristic s, easywhite ? o rde r code s and bins ( i f = 550? m a , t j = 85?c) - continued copyright ? 2015-2016 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. xlamp ? cxb1820 led
5 rel ativ e spec tral po we r distrib ution the following graph is the result of a series of pulsed measurements at 550?ma and t j = 85?c. relative spectral power distribution 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 relative spectral power distribution 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) 30g, 3000 k, 90 cri 30q, 3000 k, 90 cri 30u, 3000 k, 90 cri copyright ? 2015-2016 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. xlamp ? cxb1820 led
6 elec trical chara c teristics the following graph is the result of a series of steady-state measurements. 33 34 35 36 37 38 39 350 450 550 650 750 850 950 1050 voltage (v) current (ma) tc = 25 c tc = 55 c tc = 85 c tc = 105 c copyright ? 2015-2016 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. xlamp ? cxb1820 led
7 rel ativ e lu m inous fl ux the relative luminous fux values provided below are the ratio of measurements of the cxb1820 led at steady ? state operation at the given conditions, divided by the fux measured during binning, which is a pulsed measurement at 550?ma at t j = 85?c. for example, at steady ? state operation of tc = 55?c, i f = 650?ma, the relative luminous fux ratio is 120% in the chart below. a cxb1820 led that measures 2100?lm during binning will deliver 2520?lm (2100 * 1.2) at steady ? state operation of tc = 55?c, i f = 650?ma. 0% 20% 40% 60% 80% 100% 120% 140% 160% 180% 200% 350 450 550 650 750 850 950 1050 relative luminous flux current (ma) tc = 25 c tc = 55 c tc = 85 c tc = 105 c copyright ? 2015-2016 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. xlamp ? cxb1820 led
8 t ypical sp atia l distribution pe rform ance g roup s - brightne ss ( i f = 550? m a , t j = 85?c) xlamp cxb1820 leds are tested for luminous fux and placed into one of the following bins. g roup code minimum luminous flux maximum luminous flux p4 1965 2100 q2 2100 2260 q4 2260 2420 r2 2420 2600 r4 2600 2780 s2 2780 2990 s4 2990 3200 t2 3200 3440 far field 0% 20% 40% 60% 80% 100% - 90 - 70 - 50 - 30 - 10 10 30 50 70 90 relative luminous intensity angle (o) copyright ? 2015-2016 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. xlamp ? cxb1820 led
9 pe rform ance g roup s - chro m ati c ity ( t j = 85?c) xlamp cxb1820 leds are tested for chromaticity and placed into one of the regions defned by the following bounding coordinates. easywhite color t emperatures C 2- step code cc t x y 40h 4000?k 0.3777 0.3739 0.3797 0.3816 0.3861 0.3855 0.3838 0.3777 35h 3500?k 0.4022 0.3858 0.4053 0.3942 0.4125 0.3977 0.4091 0.3891 30h 3000?k 0.4287 0.3975 0.4328 0.4064 0.4390 0.4086 0.4347 0.3996 27h 2700?k 0.4524 0.4048 0.4574 0.4140 0.4633 0.4154 0.4581 0.4062 easywhite color t emperatures C 3- step ellipse bin code cc t center point major axis minor axis rotation a ngle () 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 30q 3000?k 0.4305 0.3935 0.00834 0.00408 53.2 30u 3000?k 0.4274 0.3837 0.00834 0.00408 53.2 27g 2700?k 0.4577 0.4099 0.00834 0.00420 48.5 easywhite color t emperatures C 5- step ellipse bin code cc t center point major axis minor axis rotation a ngle () x y a b 65e 6500?k 0.3123 0.3282 0.01110 0.00550 61.0 57e 5700?k 0.3287 0.3417 0.01230 0.00600 72.0 50e 5000?k 0.3447 0.3553 0.01400 0.00520 65.0 40e 4000?k 0.3818 0.3797 0.01565 0.00670 53.7 copyright ? 2015-2016 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. xlamp ? cxb1820 led
10 cree easywhit e ? bins p l ott ed on th e 1931 c i e co l or sp a ce ( t j = 85?c) 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 0.29 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 ccy ccx ansi c78.377 quadrangle easywhite 5 - step easywhite 3 - step easywhite 2 - step copyright ? 2015-2016 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. xlamp ? cxb1820 led
11 cree easywhit e ? bins p l ott ed on th e 1931 c i e co l or sp a ce ( t j = 85?c) - continued 2700 k 3000 k 3500 k 4000 k 4500 k 5000 k 30q 30u 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 0.34 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 ccy ccx ansi c78.377 quadrangle 30q, 30u copyright ? 2015-2016 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. xlamp ? cxb1820 led
12 bin an d o rde r code f orm ats bin codes and order codes are confgured as follows: o rder code bin code mec hanical dime nsions dimensions are in mm. tolerances unless otherwise specifed: .13 x 1 meaning of b1820n b1820n = 36-v cxb1820 ssssscc-hhhh-hhhggrnnnnn series = cxb1 8 internal code cri specificatio n b = 70 min cri h = 80 min cri u = 90 min cri kit code vf class n0 = 36-v class pe rformance clas s ssssscc-www -ff-ggr-aaaaa series = cxb1 8 chromaticity bi n vf class n0 = 36-v class internal code cri specificatio n b = 70 min cri h = 80 min cri u = 90 min cri flux bi n pe rformance clas s b1820n copyright ? 2015-2016 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. xlamp ? cxb1820 led
13 therm al design the cxb family of l e d arrays can include over a hundred different le d die inside one package, and thus over a hundred different junction temperatures (t j ). cree has intentionally removed junction-temperature-based operating limits and replaced the commonplace maximum t j calculations with maximum ratings based on forward current (i f ) and case temperature (tc). no additional calculations are required to ensure the cxb led is being operated within its designed limits. please refer to page 2 for the operating limit specifcation. there is no need to calculate for t j inside the package, as the thermal management design process, specifcally from solder point (t sp ) to ambient (t a ), remains identical to any other l e d component. for more information on thermal management of cree xlamp le ds, please refer to the thermal management application note . for cxb soldering recommendations and more information on thermal interface materials (tim) and connection methods, please refer to the cree xlamp cx family l e ds soldering and handling document . the cx family l e d design guide provides basic information on the requirements to use cree xlamp cxb le ds successfully in luminaire designs. to keep the cxb1820 l e d 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 fgure 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 cxb1820 0.01 0.10 1.00 10.00 100.00 350 450 550 650 750 850 950 1050 maximum r_c - a current (ma) ta = 25 c ta = 55 c ta = 85 c ta = 105 c copyright ? 2015-2016 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. xlamp ? cxb1820 led
14 n otes measurements the luminous fux, radiant power, chromaticity and cri measurements in this document are binning specifcations 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 crees control and are not intended or provided as operational specifcations for the products. calculated values are provided for informational purposes only and are not intended as specifcations. pre -release qualifcation t esting please read the le d reliability overview for details of the qualifcation process cree applies to ensure long? term reliability for xlamp leds and details of crees pre ? release qualifcation 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 specifc 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 crees 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 le d 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 e u directive 2011/65/e c (rohs2), as implemented january 2, 2013. rohs declarations for this product can be obtained from your cree representative or from the product documentation sections of www.cree.com . rea ch compliance re ach substances of very high concern (sv hcs) information is available for this product. since the e uropean chemical agency ( e cha) has published notice of their intent to frequently revise the s v hc listing for the foreseeable future, please contact a cree representative to insure you get the most up-to-date r e ach declaration. re ach banned substance information (re ach article 67) is also available upon request. ul ? r ecognized component level 4 enclosure consideration. the led package or a portion thereof has been investigated as a fre and electrical enclosure per ansi/ ul 8750. vision a dvisory warning: do not look at an exposed lamp in operation. e ye injury can result. for more information about l e ds and eye safety, please refer to the led e ye safety application note . copyright ? 2015-2016 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. xlamp ? cxb1820 led
15 pa c kaging cree cxb1820 l e ds are packaged in trays of 20. five trays are sealed in an anti-static bag and placed inside a carton, for a total of 100 le ds per carton. e ach carton contains 100 le ds 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 .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 1 2 3 4 5 6 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 / 1 0.500 a cxa15xx_datasheet_bag2013 cxa15xx_datasheet label with cree bin code, qty, lot# label with cree bin code, qty, lot# bag label with cree bin code, qty, lot# patent label is located on underside of carton unless otherwise noted all tolerances are as follows: part drawing dwg.title size b do not scale dwg. fract 1/64 x.x" .030 x.0mm .75mm angles 0-30' x.xx" .015 x.xmm .30mm draft 1 x.xxx" .005 x.xxmm .10mm this drawing contains proprietary design information and remains along with the product or products represented herein the property of tek pak, incorporated. this document and the information it contains may not be copied, transmitted, or used by any third party without the express written approval of tek pak, incorporated. .75 7.875 7.125 r.375 1.125 1.125 .75 .38 .19 scale: 0.750 dwg. no. 022489-00 sheet 2 of 2 date: 4-3-13 dr. by: kjs chk. by: rev desc. date by chk. section c-c .38 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 1 2 3 4 5 6 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 / 1 0.500 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 copyright ? 2015-2016 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. xlamp ? cxb1820 led

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