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| 1/11 1. scope of application this data sheet is applied to the chip type led lamp, model cl-l251-mc4l2-c. 2. part code c l - l 2 5 1 - m c 4 l 2 - c series l251 : white power led for general lighting. special specifications m : general color rendering index typ. 85 type. watt class c4 : 4 watt package. lighting color l2 : compliance with ansi c78.377-2008, 3-step macadam ellipse, correlated color temperature 2700k symbol data sheet citiled name cl-l251-mc4l2-c citizen electronics co.,ltd. japan ref.ce-p1168 05/11 r1(0711)
2/11 3. outline drawing 4. performance ( 1 ) absolute maximum rating symbol unit power dissipation p d w forward current i f ma forward pulse current i fp ma *1 reverse current i r ma operating temperature t op c storage temperature t st c junction temperature tj max c *2 *1 forward current : duty<=1/10 , pulse width<=10msec *2 d.c. current : tj = tc + rj-c p d pulse current : tj = tc + rj-c pw(power dissipation / one-pulse) duty symbol citiled name cl-l251-mc4l2-c citizen electronics co.,ltd. japan rating value 11.1 1,000 parameter data sheet -40 +100 150 1 960 -30 +85 resin cathode (tc measurement point) cathode mark marking 2 marking 1 anode unit : mm tolerances unless otherwise specified : 0.3 protection device it has a protection device built in as a protection circuit against static electricity. anode cathode 8 8 8 color l2 watt 4 : 4w ra m : typ.85 marking 1 : serial no. marking 2 : m 4 l 2 c ref.ce-p1168 05/11 r1(0711) 3/11 ( 2 ) electro-optical characteristics ( tc=25 c ) symbol condition min. typ. max. unit v f i f =480ma 8.75 9.3 10.5 v v i f =480ma 242 285 - lm ra i f =480ma - 85 - - rj-c junction-case - 6.0 - c/w chromaticity coordinates ( condition : i f =480ma, tc=25 c ) note: the tolerance of measurement at our tester is v f +/-3%, v+/-10%, chromaticity(x,y)+/-0.005 and ra+/-1. symbol citiled name cl-l251-mc4l2-c citizen electronics co.,ltd. japan thermal resistance luminous flux general color rendering index data sheet parameter forward voltage reference (ansi c78.377) x y x y 0.4578 0.4101 center 0.4578 0.4101 (2725k) a 0.4813 0.4319 a 0.00774 b 0.4562 0.4260 b 0.00411 c 0.4373 0.3893 ? 57.28 d 0.4593 0.3944 *color region stay within macadam "3-step" ellipse fro m the chromaticity center. *the chromaticity center refers to ansi c78.377:2008. please refer to ansi c78.377 for the chromaticity center. * is the angle between the major axis of the ellipse and the x-axis, and a and b are the major and minor semi-axes of an ellipse. (ref. iec 60081:1997 annexd) l2 color rank color rank l2 center oval parameter x-y chart-cie1931 0.38 0.39 0.40 0.41 0.42 0.43 0.44 0.43 0.44 0.45 0.46 0.47 0.48 0.49 x y color region color region (ansi) b.b. locus 2600k 2900k 2700k 2500k 2800k ref.ce-p1168 05/11 r1(0711) 4/11 5. characteristics ? forward current vs. forward voltage ? forward current vs. relative luminous flux ? forward current vs. chromaticity coordinate ? case temperature vs. chromaticity coordinate symbol data sheet citiled name cl-l251-mc4l2-c citizen electronics co.,ltd. japan -0.020 -0.015 -0.010 -0.005 0.000 0.005 0.010 0.015 0.020 0 200 400 600 800 1000 i f [ma] ?x, ?y ?x ? 0% 20% 40% 60% 80% 100% 120% 140% 160% 180% 200% 0 200 400 600 800 1000 i f [ma] relative luminous flux [a.u.] 7.5 8.0 8.5 9.0 9.5 10.0 10.5 0 200 400 600 800 1000 i f [ma] vf [v] -0.020 -0.015 -0.010 -0.005 0.000 0.005 0.010 0.015 0.020 0 25 50 75 100 125 150 tc [c] ?x, ?y ? ?y i f =480ma tc=25c tc=25c tc=25c ref.ce-p1168 05/11 r1(0711) 5/11 ? case temperature vs. forward voltage ? case temperature vs. relative luminous flux ? spectrum symbol citizen electronics co.,ltd. japan citiled name cl-l251-mc4l2-c ? case temperature vs. allowable forward current data sheet 8.0 8.5 9.0 9.5 10.0 0 25 50 75 100 125 150 tc [c] [v] 0% 20% 40% 60% 80% 100% 120% 0 25 50 75 100 125 150 tc [c] relative luminous flux [a.u.] 0% 20% 40% 60% 80% 100% 120% 350 450 550 650 750 850 [nm] relative emission intensity [a.u.] 0 200 400 600 800 1000 1200 0 25 50 75 100 125 150 tc [c] i f [ma] i f =480ma i f =480ma tc=25c, i f =480ma ref.ce-p1168 05/11 r1(0711) 6/11 6. reliability (1) details of the tests (2) judgment criteria of failure for reliability test (ta=25 c) symbol v f v u defines the upper limit of the specified characteristics. s defines the initial value. cl-l251-mc4l reliability test results will be used for cl-l251-mc4l2-c. symbol 60 c, 90 %rh for 1000 hours measuring item measuring condition high temperature storage test -40 c 30 minutes C 100 c 30 minutes, 100 cycle moisture-proof test thermal shock test 100 c 1000 hours judgment criteria for failure citiled < s 0.85 name cl-l251-mc4l2-c citizen electronics co.,ltd. japan low temperature storage test -40 c 1000 hours ta=50 c,i f =480 ma 1000 hours(with al-fin) test condition ta=25 c,i f =480 ma 1000 hours(with al-fin) continuous operation test data sheet test item i f =480ma returned to the normal ambient conditions after the completion of each test. > u 1.1 note: measurement shall be taken between 2 hours and 24 hours, and the test pieces should be i f =480ma forward voltage total luminous flux ref.ce-p1168 05/11 r1(0711) 7/11 7. packing specifications (1) packing an empty tray is placed on top of a five-tier tray which contain 48 pieces each. the set of six trays is banded together with two rubber bands. (smallest packing unit: 240 pieces) a label with product name, quantity, lot number is placed on the upper empty tray. tray (dimensions: 310 210 14.6mm / materials: electrically conductive ps) symbol data sheet citiled name cl-l251-mc4l2-c citizen electronics co.,ltd. japan < packing figure > product 50pcs/tray 310 210 14.6 product 48pcs/tray < example of indication label > 1. type e.g. cl-l251-mc4l2-c 2. p.no. (cutomer's p/n) e.g. xxx 3. lot no. e.g. 03d001 - first letter: last digit of the year e.g. 0 : year 2010 - second letter: production month e.g. 3 : mar note: october, november and december are designated by x, y and z, respectively. - third letter: ce's control number e.g. d001 4. quantity e.g. 240 pieces customer pass citizen electronics type p.no lot no q'ty cl-l251-mc4l2-c xxx 03d001 240 pcs. ---(1) ---(2) ---(3) ---(4) ref.ce-p1168 05/11 r1(0711) 8/11 8. precautions 1. avoid the application of any stress to the resin portion. 2. avoid any contact by a sharp metal nail or other materials with the resin portion. 3. this product should be secured firmly by fastening an m3 screw on both sides of the product. please be careful not to apply any stress to the product during the clamping operation. please check thoroughly. 4. insulation between the terminal section and the heat sink section of the led is not covered by warranty. with regard to insulation after this product has been assembled in an apparatus, preventive action should be carried out by the customer. 5. for fixing this product to the outer heat sink, heat grease should be applied to the whole rear surface so that the product can dissipate heat as a whole. please pay attention to avoid product deformation when conducting the clamping operation with heat grease in sheet form. 6. handling of static electricity - these products are sensitive to static electricity charge. please take measures to prevent any static electricity being produced such as the wearing of a wristband or anti-static gloves when handling this product. - all devices, equipment and machinery must be properly grounded. it is recommended that precautions be taken against surge voltage to the equipment that mounts the leds. - esd sensitivity of this product is 1000v (hbm, based on jeita ed-4701/304). - when inspecting the final products in which leds were assembled, it is recommended to check whether the assembled leds are damaged by static electricity or not. - it is easy to find static-damaged leds by a light-on test. 9/11 8. precautions (continued) symbol ambient temperature conditions or power dissipation. thus, drive conditions should be - soldering shall be implemented using a soldering bit of 40w or less with a temperature 350c or less within 3.5 seconds for one land. - manual soldering - for soldering correction - contacts number of soldering bit should be within twice for each terminal as a correction. (recommended condition in a case of lead-free solder condition) 11. recommended soldering condition (this product is not adaptable to reflow process) - factors responsible for an increase in temperature include heat generation attributed to please ensure that heat generation is not in excess of the absolute maximum rating. (refer to 4-1 performance) taken into consideration, depending on ambient temperature (ta). - next process of soldering should be carried out after the product has returned to ambient when a minimum current is applied, led dice may look different in their brightness due to - a constant current circuit is recommended as a drive circuit. a minimum current value of lighting of all dice is 40ma. 9. drive circuit data sheet in assembled status. - please design a circuit that prevents any reverse voltage (excess current) from being the individual difference of the led element, and it is not a failed product. 8. please be aware that this product should not come into contact with any other parts between each package is recommended. 7. lighting at a low current and when two or more led packages are connected, the series connection citiled applied to this product instantaneously when the circuit is on or off. - as this product is designed with consideration of the heat release property of module, a heat release design is required to use this product efficiently. 10. heat generation - no external force shall be applied to resin part during soldering. * citizen electronics cannot guarantee if usage exceeds this recommended conditions. please use it after sufficient verification is carried out on your own risk if necessary. - regarding soldering correction, above conditions shall be used. name cl-l251-mc4l2-c citizen electronics co.,ltd. japan ref.ce-p1168 05/11 r1(0711) 10/11 12. eye safety - the international electrical commission (iec) published in 2006 iec 62471 2006 photobiological safety oflamps and lamp systems which includes leds within its scope. when sorting single leds according to iec 62471, most leds can be classified as belonging to either exempt group or risk group 1. - optical characteristics of leds such as radiant flux, spectrum and light distribution are factors that affect the risk group determination of the led, and especially a high-power led, that emits light containing blue wavelengths, may have properties equivalent to those of risk group 2. - great care should be taken when directly viewing an led that is driven at high current, has multiple uses as a module or when focusing the light with optical instruments, as these actions may greatly increase the hazard to your eyes. - in addition, led sources that were included within the scope of iec 60825-1 / edition 1.2 laser safety standard, published 2001 were removed from the scope of the iec 60825-1 / edition 2.0 revised 2007. - however, keep in mind that some countries and regions have adopted standards based on the iec laser safety standard iec 60825-1:2001 which includes leds within its scope. symbol citiled data sheet - this product complies with rohs directives. 13. other name cl-l251-mc4l2-c citizen electronics co.,ltd. japan ref.ce-p1168 05/11 r1(0711) 11/11 such information, however, is subject to change without any prior notice. included in this document, business interruption and loss of data, and disclaims any and all express or implied warranties and for providing adequate designs and safeguards to minimize risk and avoid situations symbol citizen electronics assumes no liability for customers' product design or applications. name cl-l251-mc4l2-c bodily injury or damage to property, including data loss or corruption. in addition, customers are also responsible for determining the appropriateness of use of any information contained in this document such as application cases not only with a result of errors or omissions in the information included in this document. 4. absent written signed agreement, except as provided in the relevant terms and conditions of sale for product, and to the maximum extent allowable by law, citizen electronics assumes no liability whatsoever, including without limitation, indirect, consequential, special, or incidental damages or loss, including without limitation, loss of profits, loss of opportunities, or conditions of merchantability, fitness for a particular purpose, accuracy of information, and formal specifications must be exchanged and signed by both parties prior to mass production. 3. citizen electronics has used reasonable care in compiling the information but citizen electronics assumes no liability whatsoever for any damages incurred as 2. all information included in this document such as product data, diagrams, charts, is current as of the date this document is issued. before purchasing or using any citizen electronics' products listed in this document, please confirm the latest product information with a citizen electronics' sales office, in this document nor grants any license to any intellectual property rights or any other rights of citizen electronics or any third party with respect to the information in this document. citiled data sheet 9. precautions with regard to product use 1. this document is provided for reference purposes only so that citizen electronics' products are used as intended. citizen electronics neither makes warranties or representations with respect to the accuracy or completeness of the information contained citizen electronics co.,ltd. japan and conditions related to sale, use of product, or information, including warranties or no infringement. 6. please contact citizen electronics' sales office if you have any questions regarding the information contained in this document, or if you have any other inquiries. in which a malfunction or failure of a product could cause loss of human life, 5. though citizen electronics works continually to improve products' quality and reliability, products can malfunction or fail. customers are responsible for complying with safety standards evaluating by their own but also by the entire system. ref.ce-p1168 05/11 r1(0711) |
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