High efficiency, three-digit numeric displays LB-303AK Series The LB-303AK series were designed to meet the need for multi-digit numeric displays. These LED numeric displays use GaAsP on GaP for the emitting material (with the exception of green) and are housed in an epoxy resin package. They are three-digit displays with a character height of 8.0 mm. Dimensions (Unit : mm) 22.0 7.0 7.0 1.0 3- 0.9 (9.2) 0.5 1.0 10 8.0 13.0 Features 1) Height of character : 8.0 mm 2) High efficiency in a compact package. 3) Common anode and common cathode configurations are available for red and green. 4) The package surface is painted black and the segments are colored the display color. 0.5 (2.54) (12.7) 5.00.5 5.0 4.0 Tolerances are 0.3 unless otherwise noted: Selection guide Emitting color Red Green Anode LB-303VA LB-303MA Cathode LB-303VK LB-303MK Common Pin assignments 11 10 9 8 7 + + + a + + a f e b g c d 1 b g e Digit 1 D.P1 + + Pin No. f a c d f e b g d c Digit 2 D.P2 Digit 3 D.P3 + + + + 2 3 4 5 6 www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. Pin No. Function 1 2 3 4 5 6 7 8 9 10 11 Segment "c" Digit 1 Common Segment "d" Digit 2 Common Digit 3 Common Segment D.P Segment "b" Segment "f" Segment "a" Segment "e" Segment "g" 1/3 2011.04 - Rev.C LB-303AK Series Data Sheet Internal circuit schematic (example of common anode) a 9 b 7 c 1 d 3 e 10 f 8 g D.P 11 6 2 Dig.1 4 Dig.2 5 Dig.3 Absolute maximum ratings (Ta = 25C) Parameter Symbol Red Green LB-303VA / VK LB-303MA / MK Unit Power dissipation PD 960 1440 mW Power dissipation PD / seg 40 60 mW Forward current IF 15 20 mA Peak forward current IFP 60 60 mA VR 3 Reverse voltage V 3 Operating temperature Topr -25 to +75 C Storage temperature Tstg -30 to +85 C Pulse width 1ms duty 1 / 5 Electrical and optical characteristics (Ta = 25C) Parameter Symbol Conditions Forward voltage VF Red Green Min. Typ. Max. Min. Typ. Max. IF = 10mA - 2.0 2.8 - 2.1 2.8 Unit V Reverse current IR VR = 3V - - 100 - - 100 A Peak wavelength P IF = 10mA - 650 - - 563 - nm Spectral line half width IF = 10mA - 40 - - 40 - nm Not designed for radiation resistance. Luminous intensity Color Red P 650 Type LB-303VA Min. Typ. Max. Unit 1.4 4.0 - mcd 2.2 6.3 - mcd LB-303VK LB-303MA Green 563 LB-303MK Note : Measured at IF = 10mA www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. 2/3 2011.04 - Rev.C LB-303AK Series Data Sheet Electrical and optical characteristic curves 10.00 Ta=25C LB-303MA LB-303MK LB-303VA LB-303VK Relative Luminous Intensity Forward Current:IF(mA) 100 10 1 0.1 1 1.5 2 2.5 1.00 0.10 0.01 3 Ta=25C 1 10 100 Forward Current:IF(mA) Fig.1 Forward Current - Forward Voltage Fig.2 Relative Luminous Intensity - Forward Current ) Forward Voltage:VF(V) IF peak Max. Ratio of Maximum Tolerable peak IF Max. Current to Maximum Forward Current 1.6 IF=10mA LB-303MA LB-303MK 0.8 0.6 0.4 -25 -15 -5 5 15 25 35 45 55 65 75 1 1 30Hz 300Hz 1kHz 3kHz 100Hz 1000 10000 100000 120% 10 100% Forward Current (%) 100Hz 200Hz 500Hz 1kHz 2kHz 5kHz 50kHz 10kHz LB-303VA LB-303VK 20kHz ) 100 Fig.4 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( ) Fig.3 Relative Luminous Intensity - Case Temperature ( 10 Pulse Duration : tw(s) Case Temparature (C) IF peak Max. Ratio of Maximum Tolerable peak IF Max. Current to Maximum Forward Current 10kHz 30kHz 1 300kHz 1.2 100kHz ( Relative Luminous Intensity 1.4 10 80% 60% 40% 20% 1 1 10 100 1000 0% -25 -15 -5 10000 Pulse Duration : tw(s) Fig.5 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( ) www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. 5 15 25 35 45 55 65 75 85 Ambient Temperature(C) Fig.6 Derating 3/3 2011.04 - Rev.C Notice Notes Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. R1120A Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: ROHM Semiconductor: LB-303MA LB-303MK LB-303VA LB-303VK