RLD78PZW4

RLD78PZW4 Laser Diodes AlGaAs laser diode RLD78PZW4 The RLD78PZW4 is infrared laser diode high power output type (pulse 230mW). This is the best for optical disk drive use, such as CD-R / RW. !Applications Max. ×52 speed CD-R / RW drives. !Features 1) Absolute maximum optical power output : pulse 230mW 2) Wave length : Typ. 784nm 3) φ5.6mm small packages !External dimensions (Unit : mm) 90°±2° 0.4±0.1 Equivalent circuit diagram φ1.0Min. φ5.6 +0 −0.025 Glass window Chip P t y p e φ4.4+0 (3) L.D. (1) (2) 1.2±0.1 2.3 6.5±0.5 (1.27) 1.0±0.1 3−φ0.45 (3) (2) (1) !Absolute maximum ratings (Tc=25°C) Parameter Output Reverse voltage Raser PIN photodiode Symbol PO VR VR(PIN) Topr Tstg Limits Pulsed 230 Pulse condition : pulse 70nsec, Duty50% 2 − −10 to +75 (Pulsed) −40 to +85 Unit mW V − °C °C Operating temperature Storage temperature φ3.6 1/2 RLD78PZW4 Laser Diodes !Electrical and optical characteristics (Tc=25°C､CW) Parameter Threshold current Operating current Operating voltage Differential efficiency Parallel divergence angle Perpendicular divergence angle Parallel deviation angle Perpendicular deviation angle Emission point accuracy Peak emission wavelength Astigmatism Symbol Ith Iop Vop η θ //∗ Min. − − − 0.7 8 15 −2 −3 −80 779 − Typ. 30 133 2.1 0.9 9 17 0 0 0 784 − Max. 50 165 2.5 1.4 10 19 +2 +3 +80 789 6 Unit mA mA V mW / mA deg deg deg deg µm nm µm PO=90mW NA=0.15, PO=90mW − PO=90mW Conditions − θ ⊥∗ ∆φ // ∆φ ⊥ ∆X ∆Y ∆Z λ ∆ ∗ θ // and θ ⊥ are defined ...