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Product Bulletin OPB750T June 1996 January 2006
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(R) 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 (1s 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.
RoHS
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
VF IR V(BR)CEO ICEO
PARAMETER
MIN MAX UNITS
1.80 100 30 100 0.40 500 375 250 250 V A V nA V A A A nA IF = 40 mA VR = 2.0 V IC = 100 A
TEST CONDITIONS
Forward Voltage Reverse Current Collector-Emitter Breakdown Voltage Collector Dark Current Saturation Voltage On-State Collector Current
Output Phototransistor
VCE = 10 V, IF = 0, H = 0 IC = 150 A, IF = 30 mA, d = 0.22"
(5) 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"
Coupled
VCE(SAT) IC(ON) Off-State Collector Current
IC(OFF)
IF = 30 mA, VCE = 5 V(6), d = 0.08" 0.15" 0.22" , ,
Typical Performance Curves
Normalized Collector Current vs. Object Distance Normalized to d = .150" IF = 30 mA VCE = 5.0 V Average
Normalized Ouput Current vs. Forward Current Normalized to IF = 30 mA VCE = 5 V
+2
Average -2 +2 -2
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

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