directivity (typ.) i f ( ma ) typ. ( v ) typ. ( mcd ) typ. ( nm ) d typ. ( nm ) min. ( mcd ) i f ( ma ) i f ( ma ) max. ( a ) dimensions (unit:mm) tolerance: 0.1 v r ( v ) ? absolute maximum ratings (ta=25 c) electrical optical characteristics ( ta=25 c) (unit:mm) the recommended thickness of the screen mask for soldering is between 100 and 150m. the hole size of the screen mask should be same as the recommended land pattern or smaller. recommended pad layout 0.8 0.8 0.85 0.8 yellow orange red algainp on gaas sml-311dt sml-311ut 20 44 60 4 -30 to +85 -40 to +85 sml-311yt sml-311wt sml-311dt 1.8 2 100 4 605 0.9 2.5 sml-311yt sml-311wt 590 587 15 16 sml-311ut 620 18 1.6 3.15 0.9 2.5 22 0.25 0.8 1.2 1.6 0.8 1.0 terminal cathode mark relative luminous intensity ( % ) angular displacement ( deg ) angular displacement ( deg ) relative luminous intensity ( % ) 0 50 100 50 100 0 30 60 90 30 60 90 0 50 100 50 100 0 30 60 90 30 60 90 y x y? x? yellow orange red sml-311 series emitting color material part no. peak forward current i fp (ma) part no. power dissipation p d (mw) forward current i f (ma) reverse voltage v r (v) operating temperature t opr ( c) storage temperature t stg ( c) emitting color part no. forward voltage v f light wavelength reverse current i r brightness i v resin color dominant half-wave transparent colorless 0603<1.6 0.8 t=0.8mm> low current type(i f 10ma) packaging specifications (unit : mm) tape specifications : t86 <3,000pcs / reel> reel specifications label position 13 60 180 11.41 feeding direction 20.05 40.1 1.5 1.750.1 0 to 0.5 1.1 1.0 8 3.50.05 5.5 1.9 tolerance: 0.2 tolerance: 0.2 sml-311yt sml-311wt sml-311dt sml-311ut 1608 ( 0603 ) 1.6 0.8 ( t=0.8 ) led die package size (mm) :duty 1/ 5,pulse width 1ms. + 0.1 0 + 1 0 0 ? 3 rev.d
electrical characteristic curves forward current - forward voltage relative luminous intensity - case temperature ratio of maximum tolerable peak current - pulse duration derating relative luminous intensity - forward current 1.6 1.4 1.2 1.0 0.8 0.6 0.4 -30-20-10 0 1020304050607080 relative luminous intensity case temperature : tc ( c) 20 16 12 8 4 18 14 10 6 2 0 -30 -20 -10 0 10 80 70 90 50 40 60 30 20 ambient temperature : ta ( c ) maximum forward current : i f m ax. (ma) sml-311yt sml-311wt ---- sml-311yt sml-311wt sml-311dt sml-311ut sml-311yt sml-311wt ---- sml-311yt sml-311wt sml-311dt sml-311ut sml-311yt sml-311wt ---- sml-311yt sml-311wt sml-311dt sml-311ut sml-311yt sml-311wt ---- sml-311yt sml-311wt sml-311dt sml-311ut sml-311yt sml-311wt ---- sml-311yt sml-311wt sml-311dt sml-311ut 100.0 10.0 1.0 1.5 2.0 2.5 1.0 0.1 forward voltage : v f (v) forward current : i f (ma) ta=25 c 1 10 100 1 10 100 0 peak forward current : (ma) relative luminous intensity 0.1 ta=25 c 10khz 20khz 50khz 2khz 5khz 1khz 200hz 500hz 100hz 1 1 10 3 10 100 1000 10000 pulse duration : tw ( s) ratio of maximum tolerable peak current to maximum tolerable dc current i f peak m ax. i f m ax. rev.d
notes no technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of rohm co.,ltd. the contents described herein are subject to change without notice. the specifications for the product described in this document are for reference only. upon actual use, therefore, please request that specifications to be separately delivered. application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. rohm co.,ltd. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by rohm co., ltd. is granted to any such buyer. products listed in this document are no antiradiation design. appendix1-rev2.0 thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact your nearest sales office. rohm customer support system the americas / europe / asia / japan contact us : webmaster@ rohm.co. jp www.rohm.com copyright ? 2008 rohm co.,ltd. the products listed in this document are designed to be used with ordinary electronic equipment or de vices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. it is our top priority to supply products with the utmost quality and reliability. however, there is always a chance of failure due to unexpected factors. therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. rohm cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the notes specified in this catalog. 21 saiin mizosaki- cho, ukyo-ku, kyoto 615-8585, japan tel : +81-75-311-2121 fax : +81-75-315-0172 appendix
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