PRODUCT FAMILY DATA SHEET XLamp CXB1820 LED PRODUCT DESCRIPTION FEATURES TABLE OF CONTENTS The XLamp CXB1820 LED Array is a 12-mm optical source Characteristics ............................................... 2 member of the second generation of the Mechanical and optical design Operating Limits ............................................. 2 CXA family that delivers up to 30% higher consistent with other CXA18 and Flux Characteristics, EasyWhite Order efficacy and up to 20% higher lumens than CXB18 LEDs with a 12-mm optical Codes and Bins .............................................. 3 the first generation in the same LES. The source Flux Characteristics, Premium Color Order higher performance second generation Available in 70, 80, 90 and Codes and Bins .............................................. 6 CXA LED Arrays provide a drop-in 95minimum CRI options Relative Spectral Power Distribution, performance upgrade to existing CXA LED EasyWhite 2, 3 and 5step binning EasyWhite .................................................... 7 designs to shorten product development Premium Color 2- and 3-step binning Relative Spectral Power Distribution, time. In addition, the CXB LEDs also Forward voltage option: 36-V class Premium Color ............................................... 7 allow lighting manufacturers to achieve 85C binning and characterization Electrical Characteristics ............................... 8 the same or better performance with a Extremely uniform color over viewing Relative Luminous Flux .................................. 9 smaller LES, enabling a smaller, more angle Typical Spatial Distribution .......................... 10 impactful luminaire. Available in 2step, Top-side solder connections Performance Groups - Brightness .............. 10 3-step and 5-step EasyWhite bins and Thermocouple attach point EasyWhite Performance Groups - 2step and 3step Premium Color bins, the NEMA SSL3 2011 standard flux bins Chromaticity ................................................. 11 CXB1820 LED delivers high lumen output RoHS and REACh compliant Premium Color Performance Groups - and high efficacy in a single, easytouse UL recognized component (E349212) Chromaticity ................................................. 12 package that eliminates the need for reflow EasyWhite Bins Plotted on the 1931 CIE soldering. Color Space .................................................. 13 Premium Color Bins Plotted on the 1931 The CX Family LED Design Guide provides CIE Color Space............................................ 14 basic information on the requirements Bin and Order Code Formats ....................... 16 to use the CXB1820 LED successfully in Mechanical Dimensions .............................. 16 luminaire designs. Thermal Design ............................................ 17 Notes ............................................................ 18 Packaging ..................................................... 19 Cree LED / 4400 Silicon Drive / Durham, NC 27703 USA / +1.919.313.5330 / www.cree-led.com 2015-2021 Cree LED. The information in this document is subject to change without notice. Cree and the Cree logo are registered trademarks, and CLD-DS120 the Cree LED logo is a trademark, of Wolfspeed, Inc. XLamp and EasyWhite are registered trademarks of Cree LED. UL and the UL logo are registered 1 REV 9A trademarks of UL LLC. XLAMP CXB1820 LED CHARACTERISTICS Characteristics Unit Minimum Typical Maximum Viewing angle (FWHM) degrees 115 ESD withstand voltage (HBM per MilStd883D) V 8000 DC forward current mA 1050* Reverse current mA 0.1 Forward voltage ( 550mA, 85C) V 35 38 * Refer to the Operating Limits section. OPERATING LIMITS The maximum current rating of the CXB1820 depends on the case temperature (Tc) when the LED has reached thermal equilibrium under steadystate 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 LED 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. CXB1820 Standard 1200 85 C, 1050 mA 1000 800 600 125 C, 400 404 mA 200 0 0 25 50 75 100 125 150 Case Temperature (C) 2015-2021 Cree LED. The information in this document is subject to change without notice. Cree and the Cree logo are registered trademarks, and CLD-DS120 the Cree LED logo is a trademark, of Wolfspeed, Inc. XLamp and EasyWhite are registered trademarks of Cree LED. UL and the UL logo are registered 2 REV 9A trademarks of UL LLC. If (mA)