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| RLD78MYA1 Laser diodes CD players, CD-ROM laser diode RLD78MYA1 Though it is an open type package, by using a metal cap, pressing structure correspondence and protection of a laser element are enabled, and reliability is secured. !Applications Compact disc players CD-ROM !External dimensions (Units : mm) 2.40.1 2.60.1 1.20.2 2.30.5 !Features 1) 5.6 metal shell type open package. 2) A laser element is protected by using a metal cap. 3) Interchangeability reservation with 5.6 metal package of an industry standard. 2 Sub-mount 1.6 LD Chip 6.51 3-0.45 !Absolute maximum ratings (Tc=25C) Parameter Output Reverse voltage Symbol PO Limits 5 2 30 -10 to +70 -40 to +85 Unit mW V V C C Laser PIN photodiode VR VR (PIN) Topr Tstg Operating temperature Storage temperature 1.350.1 3.6 3 5.60.025 4.4max. 1 20.25 1/3 RLD78MYA1 Laser diodes !Electrical and optical characteristics (Tc=25C) Parameter Threshold current Operating current Operating voltage Differential efficiency Monitor current Parallel divergence angle Perpendicular divergence angle Parallel deviation angle Perpendicular deviation angle Emission point accuracy Peak emission wavelength Signal-to-noise ratio Symbol Ith Iop Vop Im // // X Y Z S/N 770 60 785 - 810 - nm dB Po=3mW f=720kHz, f=10kHz Min. - - - 0.1 0.05 8 20 - - - Typ. 35 45 1.9 0.25 0.15 11 37 - - - Max. 60 70 2.3 0.6 0.3 15 45 2 3 100 Unit mA mA V mW/mA mA deg deg deg deg m - Po=3mW Po=3mW Po=3mW 2mW I(3mW)-I(1mW) Po=3mW,VR(PIN)=15V Conditions - // and are defined as the angle within which the intensity is 50% of the peak value. !Electrical and optical characteristic curves 5 THRESHOLD CURRENT : Ith (mA) -10C 0C 25C 40C 60C 70C 75C 4 RELATIVE OPTICAL INTENSITY OPTICAL POWER : PO (mW) 100 90 80 70 60 50 40 30 1.0 direction direction 3 0.5 2 20 1 0 10 20 30 40 50 60 70 80 OPERATING CURRENT : IF (mA) 10 -10 0 10 20 30 40 50 60 70 80 0 -40 0 ANGLE (deg) 40 PACKAGE TEMPERATURE : TC (C) Fig.1 Optical output vs.operating current Fig.2 Dependence of threshold current on temperature Fig.3 Far field pattern 800 RELATIVE OPTICAL INTENSITY TC=25C OPTICAL INTENSITY : PO (mW) 5 WAVELENGTH : (nm) 4 790 PO=2.5mW 3 780 PO=2mW 2 PO=1mW 770 1 0 0.1 0.2 0.3 0.4 0.5 MONITOR CURRENT : Im (mA) -10 0 10 20 30 40 50 60 70 80 775 780 785 790 PACKAGE TEMPERATURE : Tc (C) WAVELENGTH : (nm) Fig.4 Dependence of wavelength on temperature Fig.5 Dependence of emission spectrum on optical output Fig.6 Monitor current vs.optical output 2/3 RLD78MYA1 Laser diodes RELATIVE OPTICAL TO NOISE RATIO : RIN (Hz-1) RELATIVE OPTICAL TO NOISE RATIO : RIN (Hz ) 10 -11 70 f=720kHz f=10kHz PO=3mW 80 10-10 -1 5 2 10 -12 10 -11 60 f=720kHz f=10kHz T=25C PO=3mW 70 10-12 80 2 10-13 5 2 10 -14 90 10 -13 90 20 30 40 50 60 100 10-14 0 0.01 0.1 1 100 10 TEMPERATURE (C) OPTICAL FEEDBACK (%) Fig.7 Temperature dependence of noise Fig.8 Dependence of noise on optical feedback S/N (dB) 5 S/N (dB) 3/3 This datasheet has been download from: www..com Datasheets for electronics components. |
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