L8045 is optical communication devices designed for pof (plastic optical fiber) data links. L8045 is a highly reliable, high- power led that emits red light with a peak at 650 nm optimized for pof. a mini-lens is molded on the package for efficient coup ling to a pof. when used with our recommended driver circuit, a 50 mbps transmitter can be configured at low cost. led red led for optical link emitter for 50 mbps optical link L8045 features l peak wavelength: 650 nm l high reliability l high output l designed to be used with s8046 or s7141-10 applications l high-speed data transmission even under poor environmental conditions with high noise absolute maximum ratings (ta=25 c) parameter s y mbol value unit forward current i f 40 ma reverse voltage v r 5 v power dissipation * 1 pmax 250 mw operating temperature topr -40 to +85 c storage temperature tstg -40 to +85 c soldering - 230 c, 5 s, at least 1.8 mm away from package surface - *1: derate power dissipation at a rate of -1.75 mw/c above ta=25 c electrical and optical characteristics (ta=25 c) parameter s y mbol condition min. typ. max. unit data rate fd nrz dc - 50 mbps forward voltage v f i f =20 ma - 1.9 2.3 v reverse current i r v r =5 v - - 10 a peak wavelength p i f =20 ma - 650 - nm spectral half width (fwhm) ? i f =20 ma - 20 - nm fiber-coupled optical output po * 2 -13 - -8 dbm rise time at pulse drive tr * 2 20 to 80 % - - 8 ns fall time at pulse drive tf * 2 80 to 20 % - - 8 ns pulse distortion ? t * 2 -3 - +1 ns jitter ? tj * 2 - - 3 ns *2: input is a pseudo-random bi-phase signal at 50 mbps. average value (duty ratio 50 %) measured by using a plastic fiber of 1 mm. si-pof and na=0.5 (gh4001 made by mitsubishi rayon). measured with the recommended driver circuit shown below. (measurement conditions: vcc=4.5 to 5.5 v, r1=750 ? , r2=2.2 k ? , r3=22 ? , c1=35 pf) note: a bypass capacitor (0.1 f) and another capacitor (4.7 f) are connected between vcc and gnd at a position within 3 mm from the lead. the center of the optical fiber is aligned with the center of the lens on the package. the distance between the fiber end and the lens is 0.1 mm. vcc icc signal input 1 14 2 7 74act08 3 4.7 m f 0.1 m fr2 L8045 r1 c1 r3 1 2 3 4 kledc0018eb 1
hamamatsu photonics k.k., solid state division 1126-1 ichino-cho, higashi-ku, hamamatsu city, 435-8558 japan, telephone: (81) 053-434-3311, fax: (81) 053-434-5184, www.hamama tsu.com u.s.a.: hamamatsu corporation: 360 foothill road, p.o.box 6910, bridgewater, n.j. 08807-0910, u.s.a., telephone: (1) 908-231-0 960, fax: (1) 908-231-1218 germany: hamamatsu photonics deutschland gmbh: arzbergerstr. 10, d-82211 herrsching am ammersee, germany, telephone: (49) 08152 -3750, fax: (49) 08152-2658 france: hamamatsu photonics france s.a.r.l.: 19, rue du saule trapu, parc du moulin de massy, 91882 massy cedex, france, teleph one: 33-(1) 69 53 71 00, fax: 33-(1) 69 53 71 10 united kingdom: hamamatsu photonics uk limited: 2 howard court, 10 tewin road, welwyn garden city, hertfordshire al7 1bw, unit ed kingdom, telephone: (44) 1707-294888, fax: (44) 1707-325777 north europe: hamamatsu photonics norden ab: smidesv?gen 12, se-171 41 solna, sweden, telephone: (46) 8-509-031-00, fax: (46) 8 -509-031-01 italy: hamamatsu photonics italia s.r.l.: strada della moia, 1/e, 20020 arese, (milano), italy, telephone: (39) 02-935-81-733, fax: (39) 02-935-81-741 information furnished by hamamatsu is believed to be reliable. however, no responsibility is assumed for possible inaccuracies or omissions. specifications are subject to change without notice. no patent rights are granted to any of the circuits described herein. ?2007 hamamatsu photonics k.k. cat. no. kled1049e01 apr. 2007 dn red led for optical link L8045 dimensional outline (unit: mm) 5.0 4.5 ?0.3 (including burr) 5.2 ?0.3 (including burr) 0.5 1.27 (specified at the lead out) 1.27 1.27 0.4 1.4 (2.15) (1.5) 6.6 ?0.4 4.3 (0.9) 10? 10? 5.0 tolerance unless otherwise noted: ?.1, ?.2? shaded area indicates burr. values in parentheses indicate reference value. (0.9) cathode cathode anode cathode 1.77 0.97 0.69 10? (0.9) 4.3 0.25 10? 1.8 kleda0086ea 2
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