鈥?/div>
Enhanced signal to noise ratio
Description
The OPB690 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
transistor output between states that can
readily drive logic gates.
This switch is designed to easily snap
mount into a 0.037" 鹵 0.001" (0.94 mm)
thick material with a rectangular opening
of 0.320" 鹵 0.003" x 0.472" (8.13 mm x
11.99 mm) minimum. Insertion into the
punched side of metal is recommended.
Customized lever arms and 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
Input Diode
Forward DC Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Peak Forward Current (1
碌s
pulse width, 300 pps) . . . . . . . . . . . . . . . . . . . . . . . 3.0 A
Reverse DC Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 V
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mW
(1)
Output Phototransistor
Collector-Emitter Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V
Emitter Reverse Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA
Collector DC Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mW
(2)
Notes:
(1) Derate linearly 1.33 mW/
o
C above 25
o
C.
(2) Derate linearly 2.0 mW/
o
C above 25
o
C.
(3) 鈥?/div>
Off鈥漜ondition exists when the lever arm is in the rest position (20
o
from vertical) as shown in
the figure.
(4) 鈥?/div>
On鈥漜ondition exists when the lever arm is deflected clockwise 18
o
+/- 3
o
form the rest posi-
tion (20
o
from vertical) as shown in the figure.
(5) From the rest position to the switch point, lever torque measured at the end of the arm is 1.5
grams max.
Optek Technology, Inc.
1215 W. Crosby Road
Carrollton, Texas 75006
12-60
(972)323-2200
Fax (972)323-2396
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