High efficiency, two-digit numeric displays LB-402DN Series The LB-402 DN 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 two-digit displays with a character height of 10.16 mm. Dimensions (Unit : mm) Features 1) Height of character : 10.16 mm 2) Common anode and common cathode configurations are available for each color. 3) The package surface is painted black and the segments are colored the display color. 4) High efficiency reflectors are used to achieve a bright, clear display. 24.0 12.0 0.5 (2.54) (20.32) 3.5Min. 7.0 2-φ 1.0 0.25 1.0 5.57 (15.24) 1.0 10.16 18.0 10° Tolerances are ±0.2 unless otherwise noted: Selection guide Emitting color Red Green Anode LB-402VD LB-402MD Cathode LB-402VN LB-402MN Common Pin assignments 18 17 16 15 + + + + 14 13 12 11 10 + + + + + a1 f1 a2 b1 f2 b2 g1 g2 e1 c1 e2 c2 d2 d1 Digit 1 D.P1 + + + + Pin No. 1 2 3 4 Digit 2 D.P2 + + + + + 5 6 7 8 9 www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. ○ Pin No. Function Pin No. Function 1 2 3 4 5 6 7 8 9 Segment "e1" Segment "d1" Segment "c1" D.P1 Segment "e2" Segment "d2" Segment "g2" Segment "c2" D.P2 10 11 12 13 14 15 16 17 18 Segment "b2" Segment "a2" Segment "f2" Digit 2 Common Digit 1 Common Segment "b1" Segment "a1" Segment "g1" Segment "f1" 1/3 2011.04 - Rev.B LB-402DN Series Data Sheet Internal circuit schematic (example of common anode) Dig.1 14 COM Dig.2 13 a1 b1 c1 d1 e1 f1 g1 D.P1 16 15 3 2 1 18 17 4 COM a2 b2 c2 d2 e2 f2 g2 D.P2 11 10 8 6 5 12 7 9 Absolute maximum ratings (Ta = 25C) Green Red Parameter Symbol LB-402VD / VN LB-402MD / MN Unit Power dissipation PD 640 960 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 Forward voltage Symbol Conditions 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 μA Peak wavelength λP IF = 10mA − 650 − − 563 − nm Spectral line half width Δλ IF = 10mA − 40 − − 40 − nm Not designed for radiation resistance. Luminous intensity λP Color Red 650 Green 563 Type LB-402VD LB-402VN LB-402MD LB-402MN Min. Typ. Max. Unit 5.6 16 − mcd 9.0 25 − mcd Note : Measured at IF = 10mA www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. ○ 2/3 2011.04 - Rev.B LB-402DN Series Data Sheet Electrical and optical characteristic curves 10.00 Ta=25°C LB-402MD LB-402MN LB-402VD LB-402VN Relative Luminous Intensity 10 1 0.1 1 1.5 2 2.5 Ta=25°C 1.00 0.10 0.01 3 1 10 Forward Voltage:VF(V) Fig.2 Relative Luminous Intensity - Forward Current ) Fig.1 Forward Current - Forward Voltage IF peak Max. Ratio of Maximum Tolerable peak IF Max. Current to Maximum Forward Current 1.6 IF=10mA 10 LB-402MD LB-402MN 0.8 0.6 0.4 -25 -15 -5 5 15 25 35 45 55 65 75 30Hz 100Hz 300Hz 1kHz 3kHz 30kHz 1 300kHz 1.2 100kHz ( 1.4 Relative Luminous Intensity 100 Forward Current:IF(mA) 10kHz Forward Current:IF(mA) 100 1 1 10 100 1000 10000 100000 Pulse Duration : tw(µs) Fig.3 Relative Luminous Intensity - Case Temperature Fig.4 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( Ι ) 120% 10 100% Forward Current (%) 100Hz 200Hz 500Hz 1kHz 2kHz 5kHz 10kHz 50kHz 20kHz LB-402VD LB-402VN ( IF peak Max. Ratio of Maximum Tolerable peak IF Max. Current to Maximum Forward Current ) Case Temparature (°C) 80% 60% 40% 20% 1 1 10 100 1000 0% -25 -15 -5 10000 Pulse Duration : tw(µs) Fig.5 Ratio of Maximum Tolerable Peak Current - Pulse Duration ( ΙΙ ) 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.B 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 © 2011 ROHM Co., Ltd. All rights reserved. R1120A