lb-502dn series led displays rev.c 1/3 high efficiency, two-digit numeric displays lb-502dn series the lb-502dn 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 13.0mm. z features 1) height of character: 13.0mm 2) common anode and common cathode configurations are available for each color. 3) high efficiency reflectors are used to achieve a bright, clear display. 4) the package surface is painted black and the segments are colored the display color. z dimensions (unit: mm) tolerances are ?.2 unless otherwise noted : (15.24) 0.25 17.5 3.5min. 7.0 (20.32) (2.54) 0.5 25.0 10? 12.7 7.4 1.25 13.0 1.25 2 ? 1.25 z selection guide emitting color common anode cathode red lb-502vd lb-502vn orange lb-502dd ? lb-502dn ? ? order-based production. green lb-502md lb-502mn z pin assignments d.p1 d.p2 a1 g1 digit 1 f1 b1 e1 c1 a2 g2 digit 2 f2 b2 e2 c2 d1 d2 pin no. 18 10 11 12 13 14 15 16 17 19 8 7 6 5 4 3 2 +++++++++ +++++++++ segment "e1" segment "d1" segment "c1" d.p1 segment "e2" segment "d2" segment "g2" segment "c2" d.p2 1 2 3 4 5 6 7 8 9 function pin no. segment "b2" segment "a2" segment "f2" digit 2 common digit 1 common segment "b1" segment "a1" segment "g1" segment "f1" 10 11 12 13 14 15 16 17 18 function pin no.
lb-502dn series led displays rev.c 2/3 z internal circuit schematic (example of common anode) dig.1 14 a1 16 b1 15 c1 3 d1 2 e1 1 f1 18 g 1 17 d.p1 4 com dig.2 13 a2 11 b2 10 c2 8 d2 6 e2 5 f2 12 g 2 7 d.p2 9 com z absolute maximum ratings (ta=25 c) 960 60 20 60 ? 5 960 60 20 60 ? 5 parameter symbol p d p d / seg i f i fp v r topr tstg red lb-502vd / vn unit mw mw ma ma v ?c ?c 960 60 20 60 ? 5 orange lb-502dd / dn green lb-502md / mn ? 25 + 75 ? 30 + 85 power dissipation power dissipation forward current peak forward current reverse voltage operating temperature storage temperature ? pulse width 1ms duty 1 / 5 z electrical and optical characteristics (ta=25 c) not designed for radiation resistance. symbol unit parameter red spectral line half width ? ? nm peak wavelength p ? nm reverse current i r ? a forward voltage v f conditions i f = 10ma i f = 10ma v r =5 v i f = 10ma ? min. 40 650 ? 2.0 typ. ? ? 100 2.8 max. orange ? ? ? ? min. 40 610 ? 2.0 typ. ? ? 100 2.8 max. green ? ? ? ? min. 40 563 ? 2.1 typ. ? ? 100 2.8 max. v z luminous intensity green p unit color red 650 type lb-502vn lb-502vd min. 5.6 typ. 16 max. ? mcd orange 610 lb-502dn lb-502dd 5.6 16 ? mcd 563 lb-502mn lb-502md 9.0 25 ? mcd note : measured at i f =10ma
lb-502dn series led displays rev.c 3/3 z electrical and optical characteristic curves fig.1 forward current - forward voltage lb-502md lb-502mn lb-502vd lb-502vn 0.1 1 10 100 1 1.5 2 2.5 3 ta=25 c forward voltage:v f (v) forward current:i f (ma) fig.2 relative luminous intensity - forward current 0.01 0.10 1.00 10.00 1 10 100 relative luminous intensity forward current:i f (ma) ta=25 c fig.3 relative luminous intensity - case temperature 0.4 0.6 1.2 1.4 1.6 case temparature ( c) i f =10ma -25 -15 -5 5 15 25 35 45 55 65 75 relative luminous intensity 0.8 1 fig.4 ratio of maximum tolerable peak current - pulse duration 1 10 100 1000 10000 100000 pulse duration : tw(?) 30hz 100hz 300hz 1khz 3khz 10khz 30khz 100khz 300khz ratio of maximum tolerable peak current to maximum forward current ( ) i f peak max. i f max. 1 10 fig.5 derating 0% 20% 40% 60% 80% 100% 120% forward current (%) ambient temperature( c) -25 -15 -5 5 15 25 35 45 55 65 75 85
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