1/3 www.rohm.com c 2011 rohm co., ltd. all rights reserved. 2011.04 - rev.b high efficiency, two-digit numeric displays lb-302fp series the lb-302fp series were designed to meet the need for multi-di git numeric displays. these two-digit led numeric displays have a character height of 7.62 mm. ? features ? dimensions (unit : mm) 1) height of character : 7.62 mm 2) high efficiency in a compact package. 3) common anode and common cathode configurations are ava ilable for red and green. 4) the package surface is painted black and the segments are milky white. ? selection guide red green lb-302vf lb-302vp lb-302mf lb-302mp anode cathode common emitting color ? pin assignments pin no. dig.1 dig.2 a g d f b e c a g d f b e c + + + + + + + + + + 10 9 8 7 6 12345 segment "g" d.p segment "a" segment "f" digit 2 common segment "d" segment "e" segment "c" segment "b" digit 1 common 1 2 3 4 5 6 7 8 9 10 function pin no. 3.94 0.7 c0.5 0.7 7.62 7.0 15.0 10 15.5 (10.16) 0.5 (2.54) (10.16) 7.2 5.3 0.5 tolerances are 0.25 unless otherwise noted:
2/3 www.rohm.com c 2011 rohm co., ltd. all rights reserved. 2011.04 - rev.b data sheet lb-302fp series ? internal circuit schematic (example of common cathode) 3 a 9 b 8 c 6 d 7 e 4 f 1 g 2 d.p 10 dig.1 5 dig.2 pin no. pin no. ? absolute maximum ratings (ta = 25 ? c) parameter symbol red unit lb-302vf / vp lb-302mf / mp 800 50 15 60 ? 5 mw mw ma ma v c c p d p d / seg i f i fp v r topr tstg power dissipation power dissipation forward current peak forward current reverse voltage operating temperature storage temperature green 960 60 20 60 ? 5 ? 25 to + 75 ? 30 to + 85 ? pulse width 1ms duty 1 / 5 ? electrical and opti cal characteristics (ta = 25 ? c) parameter symbol red green unit conditions min. typ. max. v a nm nm 2.8 2.0 650 40 100 ? ? ? ? ?? ? min. typ. max. 2.8 2.1 563 40 100 ? ? ? ? ? ?? i f = 10ma v r = 5v i f = 10ma i f = 10ma v f i r p ? forward voltage reverse current peak wavelength spectral line half width not designed for radiation resistance. ? luminous intensity unit min. typ. max. color p type red green 650 563 lb-302vf / vp lb-302mf / mp 2.2 6.3 ? mcd 3.6 9.0 ? mcd note : measured at i f = 10ma
3/3 www.rohm.com c 2011 rohm co., ltd. all rights reserved. 2011.04 - rev.b data sheet lb-302fp series ? electrical and optical characteristic curves fig.1 forward current - forward voltage lb-302mf lb-302mp lb-302vf lb-302vp 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 ( ) lb-302mf lb-302mp 1 10 100 1000 10000 100000 pulse duration : tw(s) 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 ratio of maximum tolerable peak current - pulse duration ( ? ) 1 10 1 10 100 1000 10000 pulse duration : tw(s) 100hz 200hz 500hz 1khz 2khz 5khz 10khz 20khz 50khz ratio of maximum tolerable peak current to maximum forward current ( ) i f peak max. i f max. lb-302vf lb-302vp fig.6 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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