1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C78.374-2015Electric Lamps Light-Emitting Diode Package Specification Sheet for General Illumination ApplicationsANSI C78.374-2015 American National Standard for Electric LampsLight-Emitting Diode Package Specification Sheet
2、 for General Illumination Applications Secretariat: National Electrical Manufacturers Association Approved October 27, 2015 American National Standards Institute, Inc. 2016 National Electrical Manufacturers Association NOTICE AND DISCLAIMER The information in this publication was considered technica
3、lly sound by the consensus of persons engaged in the development and approval of the document at the time it was developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. American National Standards Institut
4、e (ANSI) standards and guideline publications, of which the document contained herein is one, are developed through a voluntary consensus standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this pub
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12、nsibility of the certifier or maker of the statement. ANSI C78.374-2015 Page i 2016 National Electrical Manufacturers Association American National Standard Approval of an American National Standard requires verification by ANSI that the requirements for due process, consensus, and other criteria fo
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16、ot develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpr
17、etations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodic
18、ally to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published by: National Electrical Manufacturers Association 1300 North 17thStreet, Suite 90
19、0 Rosslyn, VA 22209 www.nema.org 2016 National Electrical Manufacturers Association. All rights reserved including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works, and the International and Pa
20、n American Copyright Conventions. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America. ANSI C78.374-2015 Page ii 2016 National Electrical Manufacturers As
21、sociationCONTENTS Page FOREWORD iv INTRODUCTION v Section 1 Scope 1 1.1 Patent Disclaimer 1 Section 2 Normative References 2 Section 3 Definitions 3 Section 4 General Information 4 4.1 Title on the Specification Sheet 4 4.2 Graphic Presentation Requirements . 4 Section 5 Performance Characteristics
22、. 5 5.1 Correlated Color Temperature versus Luminous Flux 5 5.2 Color Binning . 5 5.3 Spectral Power Distribution . 6 5.4 Luminous Intensity Distribution . 6 5.5 Luminous Flux versus Forward Current 7 5.6 Luminous Flux versus Temperature . 8 Section 6 Operational Characteristics . 9 6.1 Operating Li
23、mits 9 6.2 Thermal and Electrical Characteristics . 9 6.3 Forward Current versus Forward Voltage . 9 6.4 Forward Current versus Temperature 10 6.5 Forward Voltage versus Temperature 11 Section 7 Physical and Electrical Connection Characteristics 12 7.1 Mechanical Characteristics . 12 7.2 Electrical
24、Diagram . 12 Section 8 Product Handling Recommendations 13 8.1 Assembly. 13 8.2 LED Packing Information 13 Section 9 Data Requirement . 14 9.1 Photometric and Chromaticity Data 14 9.2 Thermal Characteristic Data . 14 Section 10 Informative References . 15 TABLES Page Table 1 Example of CCT versus lu
25、minous flux . 5 Table 2 Example of color binning structure . 6 Table 3 Example of operating limits 9 Table 4 Example of thermal and electrical characteristics 9 FIGURES Page Figure 1 Example of spectral power distribution . 6 Figure 2 Example of averaged relative luminous intensity angular distribut
26、ion . 7 Figure 3 Example of luminous flux versus forward current . 8 Figure 4 Example of luminous flux versus temperature 8 ANSI C78.374-2015 Page iii 2016 National Electrical Manufacturers Association Figure 5 Example of forward current versus forward voltage (I-V curve) 10 Figure 6 Example of forw
27、ard current versus temperature . 10 Figure 7 Example of forward voltage change with temperature 11 ANSI C78.374-2015 Page iv 2016 National Electrical Manufacturers Association FOREWORD (This foreword is not a part of ANSI C78.374-2015) This is a new standard and not a revision of a previous standard
28、. Suggestions for improvement of this standard will be welcome. They should be sent to the following address: Secretary of ASC C78 National Electrical Manufacturers Association 1300 North 17thStreet, Suite 900 Rosslyn, VA 22209 This standard was processed and approved for submittal to ANSI by Accred
29、ited Standards Committee on Electric Lamps, C78, and its Work Group, C78WG09. Approval of the standard is not meant to imply that all work group members voted to approve it. ANSI C78.374-2015 Page v 2016 National Electrical Manufacturers Association INTRODUCTION With the rapidly changing light-emitt
30、ing diode (LED) light sources for general illumination, there is need for a standardized LED package specification sheet, sometimes referred as “LED package datasheet,” that allows for the direct comparison of common LED characteristics across manufacturers. Currently, many LED specification sheets
31、contain different sets of data and information that can cause confusion when users compare LED packages. Therefore, it is necessary for the American National Standards Institute (ANSI) to provide guidelines for LED manufacturers when creating LED specification sheets. The purpose of this standardize
32、d specification sheet format is to communicate features and performance of LEDs to users in a consistent manner throughout the industry. This document recommends the performance, operational, physical, and electrical characteristics that shall be a part of any LED specification sheet. Manufacturers
33、have flexibility to provide supplemental information in order to further assist users. Standardizing the features and performance data to be reported by manufacturers is intended to enable comparisons of features and performance of LED sources. For LED package data that is commonly shared across dif
34、ferent products by the same manufacturer, such as color binning, assembly information, and packing information, internet addresses or hyperlinks from the specification sheet to supporting documents containing such information is an acceptable practice within the LED package specifications sheet requ
35、irements listed in this document. 2016 National Electrical Manufacturers Association ANSI C78.374-2015 Page 1 2016 National Electrical Manufacturers Association Section 1 Scope The purpose of this standard is to specify the standardized white LED package specification sheet, or data reporting format
36、, as the means of communication between LED package producers and users in general illumination applications. The minimum defined contents and format of the specification sheet are provided. Manufacturers can include additional information. 1.1 Patent Disclaimer At the time of publication, it is pos
37、sible that some of the elements of this document may be the subject of patent rights. When this standard was approved for publication, Accredited Standards Committee (ASC) C78 and the National Electrical Manufacturers Association (NEMA) did not know of any patent applications, patents pending, or ex
38、isting patents. ASC C78 shall not be held responsible for identifying any or all such patent rights. ANSI C78.374-2015 Page 2 2016 National Electrical Manufacturers Association Section 2 Normative References All standards are subject to revision, and parties to agreements based on this American Nati
39、onal Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. ANSI/IES RP-16-10 Nomenclature and Definitions for Illuminating Engineering ANSI C78.377-2011 Specifications for the Chromaticity of Solid State Lighting Products ANSI C
40、78.374-2015 Page 3 2016 National Electrical Manufacturers Association Section 3 Definitions bin: This term is defined in ANSI/IES RP-16-10. brand name: A name used by a manufacturer to distinguish its products from products made by other manufacturers. LED case temperature (Ts): This term is defined
41、 in ANSI/IES LM-80-15. LED package: This term is defined in ANSI/IES RP-16-10. product code (or order code): An identifier used by a manufacturer to distinguish a given product from other products made by the same manufacturer. The product code may consist of numbers and/or letters. specification sh
42、eet: A specification sheet (or datasheet) is a document summarizing the performance and other technical characteristics of a product, machine, component (e.g., an electronic component), material, subsystem (e.g., a power supply), or software in sufficient detail to be used by a design engineer to in
43、tegrate the component into a system. Specifically, the specification sheet referenced in this document lists particular characteristics, connectivity, and usage recommendations for LED packages. ANSI C78.374-2015 Page 4 2016 National Electrical Manufacturers Association Section 4 General Information
44、 4.1 Title on the Specification Sheet The title of the specification sheet shall include the brand name and product name. 4.2 Graphic Presentation Requirements To maximize readability for the reader and for machine scanning, graphs shall be constructed in linear scale and use fully saturated colors,
45、 with legends (if any) located outside of the graphic display area. All graph axes shall be labeled, complete with units, using a minimum 8-point typeface. No background shall be employed behind the graphed data points. ANSI C78.374-2015 Page 5 2016 National Electrical Manufacturers Association Sect
46、ion 5 Performance Characteristics 5.1 Correlated Color Temperature versus Luminous Flux The minimum luminous flux associated with a correlated color temperature (CCT) specified for a given p-n junction temperature, Tj, or case temperature and operational electrical parameters shall be provided in a
47、table format (see Table 1) with the following information: 1) Correlated color temperature (CCT); use ANSI C78.377-2011 nominal CCT increment if applicable 2) Minimum luminous flux for each nominal CCT 3) CRI minimum (if specified) 4) Product codes (see section 3) 5) Forward current 6) Junction or c
48、ase temperature Table 1 Example of CCT versus luminous flux (IF= 700 mA and Tj= 25 C) CCT, K Luminous flux, lm (minimum) CRI (minimum) Product code 2700 180 90 ABCD-XYZ-1234 3000 194 90 ABCD-XYZ-5678 3500 210 85 ABCD-XYZ-901 4000 224 80 ABCD-XYZ-456 5.2 Color Binning For each nominal CCT, the color
49、binning information shall be provided in a table format (see Table 2) with following information: 1) Nominal CCT values 2) Chromaticity values for a given nominal CCT in the four corners of each color bin indicated as A, B, C, D (or u1,v1; u2,v2; u3,v3; u4,v4), where A is the upper right corner of each bin, and B, C, D are in counterclockwise order. As an example, refer to ANSI C78.377 Table A1 for x,y quadrangle coordinates of the ANSI 7 step quadrangles. Note that these quadrangles may be subdivided into smaller bins, as shown in Table 2. 3) Bin codes a
