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. M-274 Features • Low current consumption • Small astigmatism • Small package (φ5.6mm) 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 = 25°C) • Optical power output PO • Reverse voltage VR • Operating temperature • Storage temperature Connection Diagram 3 Topr Tstg LD PD 35mW 40 2 15 –10 to +60 –40 to +85 Pin Configuration COMMON PD 2 LD 2 mW V V °C °C 1 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 = 25°C) Item Symbol Tc: Case temperature Conditions Min. Typ. Max. Unit 10 20 40 mA Threshold current Ith Operating current Iop PO = 35mW 35 55 70 mA Operating voltage Vop PO = 35mW — 2.0 2.5 V Wavelength λ PO = 35mW 780 790 800 nm 20 24 28 degree 7 9 12 degree — — ±80 µm — — ±3 degree — — ±3 degree Radiation angle Positional accuracy Perpendicular θ⊥ Parallel θ// Position ∆X, ∆Y, ∆Z Angle ∆φ⊥ PO = 35mW PO = 35mW ∆φ// Differential efficiency ηD PO = 35mW 0.7 1.0 1.3 mW/mA Astigmatism As PO = 35mW — — 6 µm Monitor current Im PO = 35mW, Vr = 5V — 0.10 — mA 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 0.4 1.0 0.5 90° 3 1 2 0 φ5.6 – 0.025 φ4.4 MAX φ3.7 MAX φ1.0 MIN 1.2 ± 0.1 Reference Plane 2 3 1 3 – φ0.45 ∗Optical Distance = 1.35 ± 0.08 6.5 LD Chip & Photo Diode SONY CODE 2.6 MAX 0.5 MIN ∗1.26 0.25 Window Glass PCD φ2.0 M-274 PACKAGE WEIGHT EIAJ CODE JEDEC CODE –3– 0.3g