sld202u/v 25mw high power laser diode description the sld202u/v is a gain-guided high-power laser diode fabricated by mocvd. features high power laser diode with the excellent general purpose application communications, optical disc structure algaas double-hetero laser diode, pin photo diode included for monitoring the laser radiant power output recommended radiant power output 20mw absolute maximum ratings (tc = 25?) optical power output po 25 mw reverse voltage v r ld 2 v pd 30 v operating temperature topr ?0 to +50 ? storage temperature tstg ?0 to +85 ? ?1 e89316c9z-ps sony reserves the right to change products and specifications without prior notice. this information does not convey any licens e by any implication or otherwise under any patents or other right. application circuits shown, if any, are typical examples illustr ating the operation of the devices. sony cannot assume responsibility for any problems arising out of the use of these circuits. sld202u m-221 sld202v m-248 pin configuration 1 2 3 common ld pd 2 bottom view 1 3 1. ld cathode 2. pd anode 3. common marking m product no. lot no. connection diagram
2 sld202u/v electrical and optical characteristics (tc = 25 c) unit max. typ. min. conditions symbol ith iop vop im ? // ? x, ? y, ? z ?? ? // d i d item 800 0.025 7 0.3 80 100 1.9 820 0.12 28 15 1.0 perpendicular parallel position angle threshold current operating current operating voltage wavelength monitor current radiation angle positional accuracy differential efficiency dark current of pd 110 140 2.5 840 0.6 38 22 50 3 0.15 ma ma v nm ma degree degree m degree mw/ma a p o = 20mw p o = 20mw p o = 20mw p o = 20mw v r = 15v p o = 20mw p o = 20mw p o = 20mw v r = 15v a p c a t c safety goggles for protection from laser beam ir fluorescent plate optical material optical power output control device temperature control device lens laser diode optical board handling precautions (1) eye protection against laser beams the optical output of laser diodes ranges from several mw to 4w. however the optical power density of the laser beam at the diode chip reaches 1mw/cm 2 . unlike gas lasers, since laser diode beams are divergent, uncollimated laser diode beams are fairly safe at a laser diode. for observing laser beams, always use safety goggles that block infrared rays. usage of ir scopes, ir cameras and fluorescent plates is also recommended for monitoring laser beams safely. (2) prevention of surge current and electrostatic discharge laser diode is most sensitive to electrostatic discharge among semiconductors. when a large current is passed through the laser diode even for an extremely short time (in the order of nanosecond), the strong light emitted from the laser diode promotes deterioration and then laser diodes are destroyed. therefore, note that the surge current should not flow the laser diode driving circuit from switches and others. also, if the laser diode is handled carelessly, it may be destructed instantly because electrostatic discharge is easily applied by a human body. be great careful about excess current and electrostatic discharge.
3 sld202u/v optical power output vs. forward current characteristics i f forward current [ma] po optical power output [mw] far field pattern (ffp) angle [degree] relative radiant intensity (optional scale) 75 150 0 20 10 0 40 20 0 20 40 0 0.5 1.0 po = 20mw tc = 25 c // ? example of representative characteristics relative radiant intensity vs. wavelength characteristics wavelength [nm] relative radiant intensity relative radiant intensity vs. wavelength characteristics wavelength [nm] relative radiant intensity 815 820 825 po = 20mw 815 820 825 po = 5mw
4 sld202u/v package outline unit: mm sld202u reference slot 1.0 photo diode 0.4 window glass 1.0 7.7max 6.9max 5.0max *2.45 30 0.25 reference plane ld chip 3 0.45 pcd 2.54 1.5 7.0max *optical distance = 2.55 0.05 m 221(lo 2) sony code eiaj code jedec code package structure m-221(lo-2) 231 2 3 1 9.0 0.015 0 package weight 1.2g sld202v m-248 (lo-11) reference slot 1.0 0.4 photo diode 2 3 1 window glass reference plane ld chip 9.0 0.015 0 7.7 max 6.9 max 3.5 0.6 max ? 2.45 3.4 max 1.5 7.0 max 3 0.45 pcd 2.54 ? optical distance = 2.55 0.05 sony code eiaj code jedec code m-248 package weight 1.2g sony corporation
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