Reflective Line Reader Sensor Type OPB739RWZ Features: • • • • • • Focused for maximum sensitivity Phototransistor Output 650nm Visible Red LED to optimize detection of dye based inks Low-cost plastic housing 24” minimum 26AWG wire leads Optimal operating distance range 0.015” [.38mm] to 0.045” [1.14mm] Description: The OPB739RWZ is a reflective line reader sensor. The sensor utilizes a visible red (650nm) LED and an NPN silicon phototransistor mounted side by side on converging optical axes in a black plastic housing. The converging light beam makes this sensor capable of detecting line widths as small as 0.004” [0.1mm] at the optimum distance of 0.030” [0.76mm] from the target. The red LED maximizes the reflected signal contrast of black lines on white backgrounds. Recommended line spacing is .050” minimum. This sensor can be used with Optek’s OCB100CZ auto calibration module to reduce variability from sensor to sensor and to achieve a digital output. Custom electrical, wire, cabling and connectors are available. Contact your local representative or OPTEK for more information. Applications: • Line Reading • Low Resolution Bar Code Sensing • Paper edge detection • Mark detection • Reflective Optical Encoders RoHS OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 [email protected] www.optekinc.com Issue A.2 1/11 Page 1 of 4 Reflective Line Reader Sensor Type OPB739RWZ Absolute Maximum Ratings (TA=25°C unless otherwise noted) Storage and Operating Temperature Range -40° C to +85° C Input LED Forward DC Current 40 mA Reverse DC Voltage 2V Power Dissipation 100 mW Output Phototransistor Collector-Emitter Voltage 30 V Emitter-Collector Voltage 5V Power Dissipation 100 mW Electrical Characteristics (TA = 25°C unless otherwise noted) SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS Input IR LED VF Forward Voltage 1.2 2.0 2.3 V IF = 20 mA IR Reverse Current - - 100 µA VR = 2 V λP Peak Emission Wavelength - 650 - nm IF = 20mA Output Phototransistor V(BR)CE0 Collector Emitter Breakdown Voltage 30 - - V IC = 100 µA V(BR)ECO Emitter Collector Breakdown Voltage 5 - - v IE = 100 µA Collector Dark Current - - 100 nA VCE = 10 V, IF = 0 Tr Rise Time - 300 - µs Tf Fall Time - 300 - µs VCE = 5 Volts (3) IC = 1 mA RL = 20KΩ 0.25 - - mA d = 0.030” (.76 mm) (1)(2) IF = 20 mA, VCE = 5 V Collector Emitter Saturation Voltage - - 0.4 V d = 0.030” (.76 mm) (1)(2) IC = 50 µA, IF = 20 mA Crosstalk Collector Current - - 0.05 mA ICEO Coupled Characteristics I C(ON) V CE(SAT) I CX On-State Collector Current IF = 20 mA, VCE = 5 V No reflective test surface present Notes: 1. “d” is the distance from the assembly’s lens surface to the reflective surface. 2. Measured using 90% diffuse reflectance white test card as the reflecting surface. 3. Typical values by design. Rise and Fall times are not tested. 4. Methanol or Isopropanol are recommended as cleaning agents. Plastic housing is soluble in chlorinated hydrocarbons and ketones. OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 [email protected] www.optekinc.com Issue A.2 1/11 Page 2 of 4 Reflective Line Reader Sensor Type OPB739RWZ Typical Drive Circuit Example reflective target with 0.004”, 0.008”, and .012” line widths spaced 0.050” apart Adjust LED drive to obtain an output voltage of approximately 4 volts when reflective target is in position and when line to detect is not in the sensors field of view Typical Output Voltage vs Time Line Spacing = .050" Paper Speed = 50 inches / second 4.5 Output (Volts) 4.0 3.5 3.0 2.5 0.004" Lines 2.0 0.008" Lines 1.5 1.0 0.012" Lines 0.5 0.0 0 1 2 3 4 5 6 7 8 Time (mS) 9 10 11 12 13 14 OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 [email protected] www.optekinc.com Issue A.2 1/11 Page 3 of 4 Reflective Line Reader Sensor Type OPB739RWZ Typical Performance Curves VF vs. IF vs Temperature Relative Ic(on) vs Temperature 2.4 Typical 1.2 2.3 1.0 Relative Output Current Forward Voltage (VF) 2.2 20°C 2.1 10°C 2.0 0°C 50°C 30°C 1.9 80°C 1.8 1.7 1.6 1.5 5 10 15 20 25 LED Drive (mA) 30 35 40 0.8 0.6 0.4 0.2 0.0 0 20 40 Temperature (°C) 60 80 Output Current vs. Distance 1.2 Relative Output Current 1.0 0.8 0.6 0.4 0.2 0.0 0.00 0.01 0.02 0.03 0.04 0.05 Distance (inches) 0.06 0.07 0.08 OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 [email protected] www.optekinc.com Issue A.2 1/11 Page 4 of 4