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| STS-8831 Dual Channel Optical Switch Assembly Over / Under Optical Axis Features * Non contact switching * Four wires for electrical connection * Fast switching speed Description The STS-8831 consists of a pair of infrared emitting diodes and a pair of NPN phototransistors mounted on opposite sides of a 5.1 mm. wide slot. Phototransistor switching takes place whenever an opaque object passes through the slot. The Phototransistors have a 0.5x1.5 mm internal aperture for increased resolution. The polysulfone housing (Note 1) reduces interference from ambient light and provides dirt and dust protection. 340 mm length wires may be terminated with an IDC connector upon special order. Absolute Maximum Ratings Operating & Storage Temp. Input Diode Pair Reverse Voltage Average Forward Current Peak Forward Current (1s pulse) Power Dissipation (Note 2) Phototransistor (each) Collector-Emitter Voltage Emitter-Collector Voltage Power Dissipation (Note 3) -40C to +100C 6V 50 mA 3A 200 mW 30 V 5V 100 mW Gray 13.2 34.8 16.0 o 6.6 o 3.0 C Optical Centerline L 5.1 C L C L 3.8 (2 PL) 8.0 Ch. 1 Ch. 2 16.5 3.0 C L 6.35 11.4 Dimensions in mm (-/+ 0.12) Green Sensor output (Ch. 1) White Sensor output (Ch. 2) Blk (Gnd) Schematic Electrical Characteristics (TA=25C unless otherwise noted) Symbol Parameter Min Typ Max Units Test Conditions Input Diode VF Forward Voltage 2.4 3.4 V IF = 40 mA IR Reverse Current 100 A VR = 4 V Output Phototransistor ICEO Collector Dark Current 100 nA VCE = 10V, Ee = 0, IF = 0 BVCEO Collector-Emitter Breakdown Voltage 30 V IC = 100 A, Ee = 0 BVECO Emitter-Collector Breakdown Voltage 5 V IC = 100 A, Ee = 0 Coupled VCE(SAT) Collector Emitter Saturation Voltage 0.4 V IC = 250 A, IF = 25 mA IC(ON) On-State Collector Current 400 A VCE = 10V, IF = 25 mA ICX Cross talk 200 A IF = 25 mA, VCE = 2.0 V Specifications subject to change without notice 103327 REV 1 Notes: (1) Plastic housing is soluble in chlorinated hydrocarbons and ketones. Recommended cleaning agents are methanol or isopropanol. (2) Derate linearly 2.6 mW/C above 25C. (3) Derate linearly 1.3 mW/C above 25C. 5200 St. Patrick St., Montreal Que., H4E 4N9, Canada Tel: 514-768-8000 Fax: 514-768-8889 QF-84 The Old Railway, Princes Street Ulverston, Cumbria, LA12 7NQ, UK Tel: 01 229 581 551 Fax: 01 229 581 554 |
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