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| HOA1887 Transmissive Sensor FEATURES * Choice of phototransistor or photodarlington output * Side mount package * Ambient light and dust protective filter * Accurate position sensing * 0.010 in.(0.25mm) aperture windows * 0.125 in.(3.18 mm) slot width * 24.0 in.(610 mm) min. 26 AWG UL 1429 wire leads INFRA-89.TIF DESCRIPTION The HOA1887 series consists of an infrared emitting diode facing an NPN silicon phototransistor (HOA1887- 011, - 012) or photodarlington (HOA1887- 013) encased in a black thermoplastic housing. Detector switching takes place whenever an opaque object passes through the slot between emitter and detector. The side mounting package is useful in applications in which the interruptive element is parallel to the mounting plane. Both emitter and detector have a 0.010 in.(0.25 mm) x 0.60 in(1.52 mm) vertical aperture. This feature is ideal for use in applications in which maximum position resolution is desired. All devices employ a built- in strain relief for maximum wire attachment strength. The sensor housing contains IR transmissive optical windows. This arrangement provides excellent protection against ambient light while eliminating aperture openings which could be clogged by airborne contaminants. The HOA1887 series contains plastic molded components. For additional component information see SEP8506, SDP8406, and SDP8106. Housing material is polycarbonate. Housings are soluble in chlorinated hydrocarbons and ketones. Recommended cleaning agents are methanol and isopropanol. Wire color and functions are: Red - IRED Anode Black - IRED Cathode White - Detector Collector OUTLINE DIMENSIONS in inches (mm) Tolerance 3 plc decimals 0.010(0.25) 2 plc decimals 0.020(0.51) dim_107.CDR 338 h Honeywell reserves the right to make changes in order to improve design and supply the best products possible. HOA1887 Transmissive Sensor ELECTRICAL CHARACTERISTICS PARAMETER IR EMITTER SYMBOL MIN TYP MAX UNITS TEST CONDITIONS DETECTOR COUPLED CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS (25C Free-Air Temperature unless otherwise noted) Operating Temperature Range Storage Temperature Range Soldering Temperature (5 sec) IR EMITTER Power Dissipation Reverse Voltage Continuous Forward Current DETECTOR Collector-Emitter Voltage Emitter-Collector Voltage Power Dissipation Collector DC Current -40C to 85C -40C to 85C 240C 100 mW [A] 3V 50 mA TRANS. 30 V 5V 100 mW [A] 30 mA SCHEMATIC DARLINGTON 15 V 5V 100 mW [A] 30 mA Honeywell reserves the right to make changes in order to improve design and supply the best products possible. h 339 HOA1887 Transmissive Sensor Fig. 1 IRED Forward Bias Characteristics gra_092.ds4 Fig. 2 Non-Saturated Switching Time vs Load Resistance 1000 gra_096.ds4 100 90 80 70 60 50 40 30 20 10 0 0.8 Forward current - mA Response time - s Pulsed condition TA = 80 C TA = 25 C TA = -40 C 1.0 1.2 1.4 1.6 1.8 2.0 100 Photodarlington 10 Phototransistor 1 10 100 1000 10000 Forward voltage - V Fig. 3 Detector Dark Current vs Temperature 1000 Load resistance - Ohms Fig. 4 gra_094.ds4 Collector Current vs Ambient Temperature 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -50 -25 0 25 50 75 gra_095.ds4 Dark current - nA 100 10 1 0.1 0.01 0.001 -40 VCE = 30 H=0 Normalized collector current -20 0 20 40 60 100 Free-air temperature - C All Performance Curves Show Typical Values Free-air temperature - C 340 h Honeywell reserves the right to make changes in order to improve design and supply the best products possible. HOA1887 Transmissive Sensor Honeywell reserves the right to make changes in order to improve design and supply the best products possible. h 341 |
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