reflective photosensors (photo reflectors) 1 publication date: april 2004 shg00049bed CNB1304H (on2175) reflective photosensor tape end sensor for dat overview CNB1304H 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. features ? fast response ? small size and light weight absolute maximum ratings t a = 25 c unit: mm parameter symbol rating unit input (light reverse voltage v r 3v emitting diode) forward current i f 50 ma power dissipation * 1 p d 75 mw output (photo collector-emitter voltage v ceo 30 v transistor) (base open) emitter-collector voltage v eco 5v (base open) collector current i c 20 ma collector power dissipation * 2 p c 100 mw temperature operating ambient temperature t opr ? 20 to + 85 c storage temperature t stg ? 30 to + 100 c parameter symbol conditions min typ max unit input forward voltage v f i f = 50 ma 1.5 v characteristics reverse current i r v r = 3 v 10.0 a output collector-emitter cutoff current i ceo v ce = 10 v 200 na characteristics (base open) transfer collector current * 1 i c v ce = 5 v, i f = 20 ma 100 1 500 a characteristics collector-emitter saturation voltage v ce(sat) i f = 50 ma, i c = 0.1 ma 0.5 v rise time t r v cc = 10 v, i c = 0.5 ma, r l = 100 ? 6 s fall time t f 6 (note) ( ) dimension is reference CNB1304H prism 2.5 1 1 2- 1.5 (unit: mm) (input pulse) (output pulse) t r : rise time t f : fall time sig. out 10% 90% t r t f 50 ? r l v cc sig. in 3.75 0.15 8.3 0.3 6.0 0.15 2.2 0.3 (r2.3) 5.0 +0 - 0.3 6.5 0.3 7 0.3 5.0 min. 4.0 0.3 1.0 0.3 (c0.2) 3.0 0.3 8.0 7.0 0.3 +0 - 0.3 + 0 ? 0.3 4.0 0.3 2- 1.2 0.15 (3.75) (3.75) 2-0.4 0.2 1.2 +0.2 - 0.1 2-0.15 42 31 (4-r0.3) 2- 1.2 0.15 (c0.3) 1: anode 2: cathode 3: collector 4: emitter prstr104-005 package electrical-optical characteristics t a = 25 c 3 c note) * 1: input power derating ratio is 1.0 mw/ c at t a 25 c. * 2: output power derating ratio is 1.33 mw/ c at t a 25 c. note) 1. input and output are handled electrically. 2. this product is not designed to withstand radiation 3. * 1: i c measurement circuit * 2: switching time measurement circuit note) the part number in the parenthesis shows conventional part number. maintenance/ discontinued maintenance/discontinued includes following four product lifecycle stage. planed maintenance type maintenance type planed discontinued typed discontinued type please visit following url about latest information. http://panasonic.net/sc/en
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