CLD-DS123 Rev 4 Product family data sheet Cree XLamp CXB2540 LED Pro DuCt DEsCriPtion fEaturEs t aBLE of ContEnts The XLamp CXB2540 LeD Array is a 19-mm optical source Characteristics ............................................2 member of the second generation of Mechanical and optical design Operating Limits ..........................................2 Order the CXA family that delivers up to 30% consistent with other CXA25 and Flux Characteristics, easyWhite higher efficacy and up to 20% higher CXB25 LeDs Codes and Bins ...........................................3 lumens than the first generation in the Available in 70-, 80-, 90- and Flux Characteristics, Premium Color same LeS. The higher performance 95-minimum CRI options Order Codes and Bins .................................6 2-, 3- and 5-step second generation CXA LeD Arrays Cree easyWhite Relative Spectral Power Distribution .........7 provide a drop-in performance upgrade binning Relative Spectral Power Distribution, to existing CXA LeD designs to shorten Premium Color 2- and 3-step binning Premium Color ............................................7 product development time. In addition, Forward voltage option: 36-v class electrical Characteristics ............................8 the CXB LeDs also allow lighting 85C binning and characterization Relative Luminous Flux ...............................9 manufacturers to achieve the same extremely uniform color over viewing Typical Spatial Distribution ...................... 10 or better performance with a smaller angle Performance Groups - Brightness .......... 10 LeS, enabling a smaller, more impactful Top-side solder connections Performance Groups - Chromaticity ....... 11 luminaire. Available in 2-step, 3-step Thermocouple attach point Premium Color Performance Groups - bins and 2-step and 5-step easyWhite NEMA SSL-3 2011 standard flux bins Chromaticity ............................................. 12 Bins Plotted on the and 3-step Premium Color bins, the RoHS and ReACh compliant Crees easyWhite recognized component CXB2540 LeD delivers high lumen UL 1931 CIe Color Space .............................. 13 output and high efficacy in a single, (e349212) Cree Premium Color Bins Plotted on the easy-to-use package that eliminates the 1931 CIe Color Space .............................. 14 need for reflow soldering. Bin and Order Code Formats ................... 16 Mechanical Dimensions .......................... 16 The CX Family LeD Design Guide Thermal Design ........................................ 17 provides basic information on the Notes ........................................................ 18 requirements to use the CXB2540 LeD Packaging ................................................. 19 successfully in luminaire designs. Copyright 2015-2017 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree , XLamp and Cree, Inc. 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. 4600 Silicon Drive Durham, NC 27703 USA Tel: +1.919.313.5300 WWW.CREE.Com/XLAmp XLamp CXB2540 LED Chara CtEristiCs Characteristics unit Minimum t ypical 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 ( 1100mA, T = 85C) v 34.8 38 j * Refer to the Operating Limits section. oPErating LiMits The maximum current rating of the CXB2540 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 16 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 135C to ensure optimal LED lifetime. Please refer to the Thermal Design section on page 17 for more information on LeS temperature measurement. CX B2 5 4 0 2400 2100 1800 1500 1200 900 600 300 0 0 25 50 75 100 125 150 Case Temperature (C) Copyright 2015-2017 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 If (mA)