Product Bulletin OPB750T June 1996 Reflective Object Sensor Type OPB750T Features • High contrast ratio, 1000 to 1 minimum • Printed circuit board mount • Low cost plastic housing Description The OPB750T reflective assembly features a phototransistor output designed to decrease low-level light gain while not affecting the high-level light gain. Available without mounting tabs as OPB750N. Available with 12", 26 AWG wire leads as OPB750/OPB755 series. Photologic® output sensors available in OPB760/OPB770 series. Absolute Maximum Ratings (TA = 25o C unless otherwise noted) Storage and Operating Temperature Range . . . . . . . . . . . . . . . . . . . -40o C to +85o C Lead Soldering Temperature [1/16 inch (1.6 mm) from case for 5 sec. with soldering iron] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240o C(2) Input Diode Forward DC Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Peak Forward Current (1µs pulse width, 300 pps) . . . . . . . . . . . . . . . . . . . . . . . . 3.0 A Reverse DC Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0 V Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mW(1) Output Phototransistor Collector-Emitter Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V Collector DC Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mW(1) Notes: (1) Derate Linearly 1.67 mW/o C above 25o C. (2) RMA flux is recommended. Duration can be extended to 10 sec. max. when flow soldering. (3) All parameters tested using pulse technique. (4) Methanol or isopropanol are recommended as cleaning agents. Plastic housing is soluble in chlorinated hydrocarbons and ketones. (5) Photocurrent is measured using an Eastman Kodak Neutral White test card having a 90% diffuse reflectance as a reflecting surface . Reference: Eastman Kodak, Catalog #1257795. (6) IC(OFF) is the photocurrent measured with current to the input diode and a 5% reflecting surface. Optek Technology, Inc. 1215 W. Crosby Road Carrollton, Texas 75006 11-44 (972) 323-2200 Fax (972) 323-2396 Type OPB750T Electrical Characteristics (TA = 25o C unless otherwise noted) SYMBOL Input Diode PARAMETER MIN MAX UNITS TEST CONDITIONS VF Forward Voltage 1.80 V IF = 40 mA IR Reverse Current 100 µA VR = 2.0 V V IC = 100 µA Collector Dark Current 100 nA VCE = 10 V, IF = 0, H = 0 Saturation Voltage 0.40 V IC = 150 µA, IF = 30 mA, d = 0.22” µA µA µA VCE = 5 V, IF = 30 mA, d = 0.08”(5) VCE = 5 V, IF = 30 mA, d = 0.15”(5) VCE = 5 V, IF = 30 mA, d = 0.22”(5) Output Phototransistor V(BR)CEO ICEO Collector-Emitter Breakdown Voltage 30 Coupled VCE(SAT) On-State Collector Current IC(ON) 500 375 250 Off-State Collector Current IC(OFF) 250 nA IF = 30 mA, VCE = 5 V(6), d = 0.08”, 0.15”, 0.22” Typical Performance Curves Normalized Collector Current vs. Object Distance +2σ Normalized to d = .150" IF = 30 mA VCE = 5.0 V Normalized Ouput Current vs. Forward Current Normalized to IF = 30 mA VCE = 5 V Average Average -2σ +2σ -2σ Distance to Reflective Surface - Inches Forward Current - mA 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. 1215 W. Crosby Road Carrollton, Texas 75006 (972) 323-2200 Fax (972) 323-2396 11-45