Product Bulletin OPB680 April 1998 Slotted Optical Flag Switch Types OPB680, OPB680-20 Features • Phototransistor output • Mechanical switch replacement • Printed circuit board mounting • Enhanced signal to noise ratio • Lever force options Description Absolute Maximum Ratings (TA = 25o C unless otherwise noted) The OPB680 consists of an NPN phototransistor and an infrared emitting diode in a molded plastic housing. The phototransistor has an enhanced low current roll-off which improves contrast ratio and immunity to background irradiance. A lever arm actuated flag interrupts the light beam, switching the output between states that can readily drive logic gates. The lever can be actuated by a passing paper sheet without damaging the paper edge. Storage and Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . -40o C to +100o C Lead Soldering Temperature [1/16 inch (1.6 mm) from case for 5 sec. with soldering iron] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260o C The OPB680-20 has the same features as the OPB680 with an increased lever operating force. This feature prevents false triggering due to incidental contact in door sensing and other heavy duty applications. Customized lever arms and additional spring torques can be designed for specific applications. Optek Technology, Inc. Input Diode: Forward DC Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Peak Forward Current (1 µs pulse width, 300 pps) . . . . . . . . . . . . . . . . . . . . . . . 3.0 A Reverse DC Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 V Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mW(2) Output Phototransistor: Collector-Emitter Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V Emitter Reverse Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA Collector DC Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mW(3) Notes: (1) RMA flux is recommended. Duration can be extended to 10 sec. max. when flow soldering. Max. 20 grams force may be applied to leads when soldering. (2) Derate linearly 1.33 mW/ o C above 25o C. (3) Derate linearly 2.0 mW/o C above 25 o C. (4) “On” condition exists when the lever arm is in the rest position (16 o from vertical) as shown in the figure. (5) “Off” condition exists when the lever arm is deflected clockwise 8 o ± 3o from the rest position (16o from vertical) as shown in the figure. Maximum allowable deflection is 35o from the rest position. 1215 W. Crosby Road Carrollton, Texas 75006 23 (972)323-2200 Fax (972)323-2396 Types OPB680, OPB680-20 Electrical Characteristics (TA = 25o C unless otherwise noted) SYMBOL Input Diode: PARAMETER MIN MAX UNITS TEST CONDITIONS VF Forward Voltage 1.60 V I F = 10 mA IR Reverse Current 100 µA VR = 3.0 mA V I C = 100 µA Output Phototransistor: V(BR)CEO Collector-Emitter Breakdown Voltage 30 IECO Emitter Reverse Current 100 µA VEC = 0.4 V ICEO Collector-Emitter Dark Current 100 µA VCE = 5 V VSAT Saturation Voltage 0.40 V I F = 10 mA, IC = 100 µA I C(ON) On-State Collector Current µA I F = 10 mA, VCE = 5 V Coupled: 600 Mechanical: FOP Operating Force Cycles OPB680 1.5 g Measured at end of lever OPB680-20 20 g Measured at end of lever Operating Cycles Forward Current vs. Forward Voltage Input Diode IF @ 500 mS pulse width IF - Forward Current - mA Rise and Fall Time vs. Load Resistance tr 100 K Cycles Collector Dark Current vs. Ambient Temperature VCE = 5 V IF = 0 mA VCE = 5 V IF = 10 mA Normalized to TA = 25o C TA - Ambient Temperature - o C Normalized Output Current vs. Forward Current VCE = 5 V Normalized to IF = 10 mA tf IF = 10 mA (50% Duty Cycle) VCC = 5 V RL - Load Resistance - Ω Normalized Output Current vs. Ambient Temperature IF - Forward Current - mA TA - Ambient Temperature - o C Normalized Forward Voltage vs. Ambient Temperature VCE = 5 V IF = 10 mA Normalized to TA = 25o C TA - Ambient Temperature - oC 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 24