OPB680 Datasheet, PDF (1/2 Pages) OPTEK Technologies – Slotted Optical Flag Switch Types OPB680, OPB680-20

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
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.
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.
Absolute Maximum Ratings (T_A = 25^o C unless otherwise noted)
Storage and Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . -40^o C to +100^o C
Lead Soldering Temperature [1/16 inch (1.6 mm) from case for 5 sec. with soldering
iron] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260^o C
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 25^o 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 ± 3^o from the rest position
(16^o from vertical) as shown in the figure. Maximum allowable deflection is 35^o from the rest
position.
Optek Technology, Inc.
1215 W. Crosby Road
Carrollton, Texas 75006
23
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