OPTEK 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
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