128 single beam sensor (1 beam: 50 mm) EY3A-1051 single beam sensor (1 beam: 50 mm) EY3A-1051 dimensions note: all units are in millimeters unless otherwise indicated. features ? ensures higher sensitivity and external light interference resistivity than any other photomicrosensor. narrow sensing range ensures stable sensing of a variety of sensing objects. absolute maximum ratings (ta = 25 c) note: make sure there is no icing or condensation when operating the sensor. ordering information electrical and optical characteristics (ta = 0 c to 60 c) note: 1. these conditions are for the sensing of lusterless paper with an od of 0.9 maximum located at the correct sensing position of t he sensor as shown in the optical path arrangement on the next page. 2. these conditions are for the sensing of the paper supporting plate with an od of 0.05 located using the glass plate without pap er as shown in the optical path arrangement on the next page. positioning boss center of detector center of emitter pin no. 1 8 . 3 d i a . 3.2 +0.2 -0 dia. 7.9 dia. 3 +0 -0.2 dia. 8 dia. dimensions tolerance 3 mm max. 0.3 3 < mm 6 0.375 6 < mm 10 0.45 10 < mm 18 0.55 18 < mm 30 0.65 30 < mm 50 0.8 pin no. remarks name 3 g ground (gnd) 1 o output (out) 2 v power supply (vcc) unless otherwise specified, the tolerances are as shown below. japan molex 51090-0300 (crimp connector) 52484-0310 (press-fit connector) recommended mating connectors: item symbol rated value power supply voltage v cc 7 v load voltage v out 7 v load current i out 10 ma ambient temperature operating top r 0 c to 60 c storage tstg ?15 c to 70 c description model single beam sensor EY3A-1051 item value condition power supply voltage 5 v 5% --- current consumption 50 ma max. v cc = 5 v, r l = peak current consumption 200 ma max. v cc = 5 v, r l = low-level output voltage 0.6 v max. v cc = 5 v, i ol = 4 ma (see note 1) high-level output voltage 3.5 v min. v cc = 5 v, r l = 4.7 k ? (see note 2) response delay time (high to low) 1.5 ms max. the time required for the output to become ?lo? after placing sensing object. response delay time (low to high) 1.5 ms max. the time required for the output to become ?hi? after removing sensing object.
single beam sensor (1 beam: 50 mm) EY3A-1051 129 characteristics (paper table glass: t = 6 mm max., transparency rate: 90% min.) (ta =0 c to 60 c) note: 1. the data shown are initial data. 2. optical darkness (od) is defined by the following formula: p in (mw): light power incident upon the document p out (mw): reflected light power from the document optical path arrangement engineering data item characteristic value sensing density lusterless paper with an od of 0.9 max. (sensing distance: 50 mm) (see note) non-sensing distance 85 mm (from the top of the sensor), od: 0.05 paper sensing distance 50 mm (from the top of the sensor) ambient illumination sunlight: 3,000 l x max., fluorescent light: 2,000 l x max. od = ? log 10 p out p in 2. the non-sensin g distance of the EY3A-1051 is determined usin g a p a p er with an od of 0.05. 85 (see note 2) paper supporting plate 10 dia. (see note 1) 50 (standard value) glass 8.9 note: 1. the part with oblique lines indicates the paper sensing area of the EY3A-1051, which is practically determined by the diameter of the beam and its tolerance. distance characteristics (typical) distance (mm) od (value) 4.75 v 5.0 v 5.25 v
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