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| SLD231VL Index-Guided High Power AlGaAs Laser Diode For the availability of this product, please contact the sales office. Description The SLD231VL is a high-power, index-guided AlGaAs laser diode. Features * Low current consumption * Small astigmatism * Small package (5.6mm) Applications Pickup for optical discs Structure * AlGaAs quantum well structured laser diode * PIN photodiode for optical power output monitor Recommended Operating Optical Power Output Absolute Maximum Ratings (Tc = 25C) * Optical power output PO * Reverse voltage VR * Operating temperature * Storage temperature Topr Tstg 35mW M-274 LD PD 40 2 15 -10 to +60 -40 to +85 mW V V C C Connection Diagram 3 COMMON Pin Configuration PD 2 1 LD 2 1 3 1. LD anode 2. PD anode 3. COMMON Bottom View Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. -1- E94Y22B97-PS SLD231VL Optical and Electrical Characteristics (Tc = 25C) Item Threshold current Operating current Operating voltage Wavelength Radiation angle Positional accuracy Perpendicular Parallel Position Angle Ith Iop Vop // X, Y, Z // D As Im PO = 35mW PO = 35mW PO = 35mW, Vr = 5V PO = 35mW PO = 35mW PO = 35mW PO = 35mW PO = 35mW Symbol Conditions Min. 10 35 -- 780 20 7 -- -- -- 0.7 -- -- Typ. 20 55 2.0 790 24 9 -- -- -- 1.0 -- 0.10 Tc: Case temperature Max. 40 70 2.5 800 28 12 80 3 3 1.3 6 -- Unit mA mA V nm degree degree m degree degree mW/mA m mA Differential efficiency Astigmatism Monitor current 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/cm2. 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. Safety goggles for protection from laser beam Laser diode Lens Optical material IR fluorescent plate Optical board Optical power output control device Temperature control device (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. -2- SLD231VL Package Outline Unit: mm M-274 Reference Slot 0.5 3 1.0 90 2 1 0 5.6 - 0.025 Window Glass 4.4 MAX 3.7 MAX 1.0 MIN 0.5 MIN 0.4 231 3 - 0.45 PCD 2.0 Optical Distance = 1.35 0.08 SONY CODE EIAJ CODE JEDEC CODE M-274 6.5 LD Chip & Photo Diode 1.2 0.1 Reference Plane 2.6 MAX 0.25 1.26 PACKAGE WEIGHT 0.3g -3- |
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