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| Photointerrupter Model No: LBT-131 Features Compact package based on the double-mold method. High resolution (slit width = 0.5mm). Gap between emitter and detector is 5.25mm. Applications Floppy disk drives Printers Cameras Outline Dimensions (Unit: mm) --1-- Letex Technology Corp. Photointerrupter Model No: LBT-131 Absolute Maximum Ratings (Ambient Temperature: 25) Item Symbol Rating Forward current IF 50 Reverse voltage VR 5 Input Peak forward current IFP 1 Power dissipation Collector current Collector-Emitter voltage Output Emitter-Collector voltage Collector power dissipation Storage Temperature Operating Temperature Soldering Temperature Pd Ic Vceo Veco Pc Tstg Top Tsol 75 50 30 5 100 -40 to +85 -25 to +85 260 Units mA V A mW mA V V mW Note Tw=10s, t=10ms 5 seconds max. Electrical Specifications (Ambient Temperature: 25) Item Symbol MIN. Forward voltage VF Reverse current IR Input Peak wavelength p View angle 21/2 Dark current Iceo Output C-E saturation voltage Vce(sat) Light current Ic(on) 0.5 Leakage current ILeak Rise Time tr Speed Fall Time tf TYP. 1.2 940 35 MAX. 1.4 10 100 0.4 1 5 5 Units V A nm Deg. nA A mA A s Conditions IF=20mA VR=5V IF=20mA Vce=20V Ic=2mA, IB=0.1mA Vce=5V IF=20mA Vce=5V Ic=1mA RL=1K --2-- Letex Technology Corp. Photointerrupter Reference Data Forward current Vs. Ambient temperature 60 2000 Power dissipation Vs. Ambient temperature Peak forward current Vs. Duty ratio 50 100 Power dissipation (mW) Peak forward current ( mA) 1000 500 200 100 50 20 Pulse width 100us Ta = 25 Forward current (mA) 40 80 30 60 20 40 10 0 -30 0 25 50 75 100 125 20 0 -25 0 25 50 75 100 125 10 5 10 -3 2 5 10 -2 2 5 10 -1 2 5 10 0 Ambient temperature () Ambient temperature () Duty ratio Forward current Vs. Forward voltage 500 200 Ta = 75 50 25 0 Collector current Vs. Forward current 12 Vce = 5V Ta = 25 10 10 12 Collector current Vs. Collector-Emitter voltage Ta = 25 50mA 40mA 8 30mA 6 20mA 4 IF=10mA Forward current (mA) Collector current (mA) 100 50 20 10 5 2 1 0 0.5 1.0 1.5 25 8 6 4 2 0 2.0 2.5 3.0 0 10 20 30 40 50 Collector current (mA) 2 0 0 1 2 3 4 5 6 7 8 9 10 Forward voltage (V) Forward current (mA) Collector-Emitter voltage (V) Collector current Vs. Ambient temperature 8 7 IF = 20mA Vce = 5V 500 200 100 6 5 4 3 2 1 0.2 0 -25 0 25 50 75 100 Response time Vs. Load resistance 10 -5 Vce = 2V Ic = 2mA Ta = 25 Collector dark current Vs. Ambient temperature Vce = 20V 50 20 10 5 2 1 0.5 Collector dark current (A) 10 -6 10 -7 10 -8 10 -9 10 -10 10 -11 Collector current (uA) Response time (s) tf td tr ts 2 5 10 0.1 0.03 0.05 0.1 0.2 0.5 1 -25 0 25 50 75 100 Ambient temperature () Load resistance (k ) Ambient temperature () C-E Saturation voltage Vs. Ambient temperature 0.30 IF = 40mA Ic=1mA Relative collector current Vs. Shield distance 100 IF = 20mA Vce = 5V Ta=25 Test circuit for resopnse time Vcc Input RL Input RD Output Output 10% Relative collector current (%) 0.25 80 C-E Saturation voltage (V) 0.20 60 90% 0.15 40 0.10 0.05 0 -25 20 0 0 25 50 75 100 -2 -1 0 1 2 -2 -1 0 1 2 --3-- Letex Technology Corp. |
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