Slotted Optical Switch
OPB847, OPB848
Features:
•
Non-contact switching
•
Apertured for high resolution
•
Hermetically sealed components
Product Photo Here
Description:
The
OPB847
and
OPB848
consists of a gallium aluminum arsenide LED and a silicon phototransistor, which is
soldered into a printed PCBoard and mounted in a high-temperature plastic housing on opposite sides of a 0.100
inch (2.540 mm) wide slot. Both device types have a .025 (0.635mm) inch by .060 inch (1.524 mm) aperture in
front of the phototransistor for high resolution positioning sensing. Phototransistor switching takes place when an
opaque object passes through the slot.
Applications:
•
•
•
•
•
Non-contact interruptive object sensing
Assembly line automation
Machine automation
Equipment security
Machine safety
LED Peak
Part Number Wavelength
OPB847
890 nm
OPB848
Sensor
Slot Width /
Aperture
Lead Length /
Depth
Emitter/Sensor
Spacing
0.025" / 0.025"
0.425" / 0.300"
Transistor 0.100" / 0.250”
1
4
2
3
Pin #
1
2
3
4
Description
Anode
Cathode
Emitter
Collector
[ MILLIMETERS]
DIMENSIONS ARE IN:
INCHES
RoHS
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Issue A.1
7/09
Page 1 of 3
OPTEK Technology Inc. —
1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Slotted Optical Switch
OPB847, OPB848
Absolute Maximum Ratings
(T
A
= 25° C unless otherwise noted)
Operating and Storage Temperature Range
Lead Soldering Temperature [1/16 inch (1.6mm) from the case for 5 sec. with soldering iron]
Input Diode
Forward DC Current
Reverse Voltage
Power Dissipation
(2)
Output Phototransistor
Collector-Emitter Voltage
Emitter-Collector Voltage
Power Dissipation
(2)
30 V
7V
100 mW
50 mA
2.0 V
100 mW
-40° C to +85° C
240° C
Electrical Characteristics
(T
A
= 25° C unless otherwise noted)
SYMBOL
Input Diode
1.00
V
F
Forward Voltage
(4)
1.20
1.80
I
R
Reverse Current
-
1.35
1.55
1.20
0.10
1.70
1.90
1.60
100
µA
V
I
F
= 20 mA
I
F
= 20 mA, T
A
= -55° C
I
F
= 20 mA, T
A
= 100° C
V
R
= 2 V
PARAMETER
MIN
TYP
MAX
UNITS
TEST CONDITIONS
Output Phototransistor
V
(BR)CEO
V
(BR)ECO
I
CEO
Notes:
(1)
(2)
(3)
(4)
Collector-Emitter Breakdown Voltage
Emitter-Collector Breakdown Voltage
Collector-Emitter Dark Current
30
5
-
-
110
10
0.20
10
-
-
100
100
V
V
nA
µA
I
C
= 100 µA, I
F
= 0
I
E
= 100 µA, I
F
= 0
V
CE
= 10 V, I
F
= 0
V
CE
= 10 V, I
F
= 0, T
A
= 100° C
Duration can be extended to 10 seconds maximum when flow soldering.
Derate linearly 1.00 mW/° C above 25° C.
Methanol and isopropanol are recommended as cleaning agents.
Measurement is taken during the last 500 µs of a single 1.0 ms test pulse. Heating due to increased pulse rate or pulse width can
cause change in measurement results.
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Issue A.1
7/09
Page 2 of 3
OPTEK Technology Inc. —
1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Slotted Optical Switch
OPB847, OPB848
Electrical Characteristics
(T
A
= 25° C unless otherwise noted)
SYMBOL
Combined
I
C(ON)
On-State Collector Current
(1)
OPB847
OPB848
Collector-Emitter Saturation Voltage
OPB847
OPB848
Output Rise Time
OPB847
OPB848
Output Fall Time
OPB847
OPB848
4.0
1.0
-
-
0.30
0.30
12
8
12
8
-
-
0.40
0.40
20
15
20
15
mA
V
CE
= 10 V, I
F
= 20 mA
V
CE
= 10 V, I
F
= 20 mA
I
C
= 2 mA, I
F
= 20 mA
I
C
= 500 µA, I
F
= 20 mA
PARAMETER
MIN
TYP
MAX
UNITS
TEST CONDITIONS
V
CE(SAT)
V
t
r
µs
V
CC
= 10 V, I
F
= 20 mA, R
L
= 1000Ω
t
f
Notes:
(1) Measurement is taken during the last 500 µs of a single 1.0 ms test pulse. Heating due to increased pulse rate or pulse width can
cause change in measurement results.
OPB847 - Flag Next to Emitter
1.20
1.20
OPB847 - Flag Next to Sensor
1.00
1.00
Typical I
C(ON)
Response (mA)
Right to Left
Typical I
C(ON)
Response (mA)
0.80
0.80
0.60
0.60
0.40
0.40
Right to Left
0.20
Left to Right
Top to Bottom
0.20
Left to Right
Top to Bottom
0.00
0.00
0.05
0.10
0.15
0.20
0.25
0.00
0.00
0.05
0.10
0.15
0.20
0.25
Displacement Distance (inches)
1.20
OPB847 - Flag in Middle of Slot
Displacement Distance (inches)
1.00
Typical I
C(ON)
Response (mA)
0.80
0.60
0.40
Right to Left
Left to Right
Top to Bottom
0.20
0.00
0.00
0.05
0.10
0.15
0.20
0.25
Displacement Distance (inches)
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. —
1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A.1
7/09
Page 3 of 3
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