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| Reflective Photosensors (Photo Reflectors) ON2175 Reflective Photosensor 8.30.3 6.00.15 Tape end sensor for DAT Outline ON2175 is a sensor which consists of a high efficiency GaAs infrared light emitting diode and a high sensitivity Si phototransistor which are arranged together in the same direction. It detects the beginning and end of a tape based on changes in the amount of light reflected from a prism which is situated outside of the sensor. (R2.3) 4.00.3 o2.20.3 2-o1.20.15 (4-R0.3) 5.0 +0 -0.3 6.50.3 Unit : mm 3.750.15 5.0 min. 8.30.3 1.00.3 4.00.3 (C0.2) Features Fast response Small size and light weight o1.2 +0 -0.3 2-0.40.2 (3.75) 2 3.00.3 4 Absolute Maximum Ratings (Ta = 25C) 3 1 1 (Note) ( ) Dimension is reference 23 4 Pin connection Parameter Input (Light Forward current (DC) emitting diode) Power dissipation Collector current Output (Photo Collector to emitter voltage transistor) Emitter to collector voltage Collector power dissipation Temperature *1 Symbol Ratings VR IF PD *1 Unit V mA mW mA V V mW C C Reverse voltage (DC) 3 50 75 20 30 5 100 -25 to +85 IC VCEO VECO PC*2 Topr Operating ambient temperature Storage temperature Tstg -30 to +100 Input power derating ratio is 1.0 mW/C at Ta 25C. *2 Output power derating ratio is 1.34 mW/C at Ta 25C. Electrical Characteristics (Ta = 25C) Parameter Forward voltage (DC) Input characteristics Reverse current (DC) Output characteristics Collector cutoff current Collector current Symbol VF IR ICEO IC*1 IF = 50mA VR = 3V VCE = 10V VCE = 5V, IF = 20mA, RL = 100 30 6 0.5 Conditions min typ max 1.5 10 0.2 Unit V A A A s V Transfer Response time tr , tf*2 VCC = 10V, IC = 0.5mA, RL = 100 characteristics Collector to emitter saturation voltage VCE(sat) IF = 50mA, IC = 0.1mA *1 I C Measurement method (Unit : mm ) 1 2.5 1 *2 Switching time measurement circuit VCC (Input pulse) Sig.OUT (Output pulse) 90% 10% td tr tf Sig.IN ,,, ,,,,,, ,,,,,, 2- 1.5 prism ON2175 ,, , ,,, 50 RL td : Delay time tr : Rise time (Time required for the collector current to increase from 10% to 90% of its final value) tf : Fall time (Time required for the collector current to decrease from 90% to 10% of its initial value) , ,,, ,, , 2-0.15 +0.2 -0.1 (3.75) 8.0 +0 -0.3 7.00.3 2-o1.20.15 (C0.3) 1 |
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