High Reliability Slotted
Optical Switch
OPB870, OPB871, OPB872 (TX, TXV)
Features:
0.125” (3.175 mm) slot width
Choice of aperture (0.050” or 0.010” width)
PCBoard mounting
TX and TXV devices processed to MIL-PRF-19500
S level processing available
Hermetically sealed components
T
L
N
P
Description:
Each OPB870, OPB871 and OPB872 (TX, TXV) phototransistor device provides the flexibility of a custom device from a
standard product line. Building from a standard housing with a 0.125” (3.175 mm) wide slot and 0.425” ( mm) leads for
PCBoard mounting, a user can choose aperture width, opaque or IR transmissive housing shell material and mounting tab
configuration.
Housings are made from an opaque grade of injection-molded plastic to minimize sensitivity to both visible and near-
infrared light. Discrete shells exposed on the parallel faces inside each device’s throat are made from either IR transmissive
plastic (for applications where dust protection is needed) or from opaque plastic with aperture openings (for applications
that require maximum protection against ambient light).
TX and TXV devices are processed to OPTEK’s military screening program patterned after MIL-PRF-19500.
Please refer to Application Bulletins 208 and 210 for additional design information and reliability (degradation) data.
Applications:
Non-contact object sensing
Assembly line automation
Machine automation
Equipment safety
Machine safety
Military and harsh environments
Part Number Guide — OPB870, OPB871, OPB872 (TX, TXV)
OPB 8 X X X X X T X V
TX and TXV processed
to MIL-PRF-19500
Optek Assembly
Phototransistor Output Family
Discrete Shell Material:
7 —
Base mount opaque
Plastic discrete shell
PC mountable leads
Electrical Specification Variations:
0
= Electrical Parameter A (lead spacing =
0.320”)
1
= Electrical Parameter B (lead spacing =
0.320”)
2
= Electrical Parameter C (lead spacing =
Sensor Aperture:
1 —
0.010” (0.254 mm)
5 —
0.050” (1.270 mm)
Emitter Aperture:
1 —
0.010” (0.254 mm)
5 —
0.050” (1.270 mm)
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
TT Electronics | Optek Technology, Inc.
1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200
www.ttelectronics.com | sensors@ttelectronics.com
Issue B
11/2016
Page 1
High Reliability Slotted Optical
Switch
Electrical Specifications
Absolute Maximum Ratings
(T
A
= 25° C unless otherwise noted)
Storage Temperature
(1)
Operating Temperature
(1)
Lead Soldering Temperature
(3)
-65° C to +150° C
-65° C to +125° C
240° C
Input LED
Forward DC Current
Peak Forward Current (1µs pulse width, 300 pps)
Reverse DC Voltage
Power Dissipation
(2)
50 mA
1.0 A
2.0 V
100 mW
Output Phototransistor/Diode
Collector-Emitter Voltage
Emitter-Collector Voltage
Collector DC Current
Power Dissipation
Notes:
(1)
(2)
(3)
(4)
Derate linearly 1.00 mW/° C above 25° C.
Cleaning agents methanol and isopropanol are recommended. Spray or wipe; do not submerge.
RMA flux is recommended. Duration can be extended to 10 seconds maximum when flow soldering.
All parameters were tested using pulse technique.
50 V
7.0 V
30 mA
100 mW
(2)
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
TT Electronics | Optek Technology, Inc.
1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200
www.ttelectronics.com | sensors@ttelectronics.com
Issue B
11/2016
Page 2
High Reliability Slotted Optical
Switch
Electrical Characteristics
(T
A
= 25°C unless otherwise noted)
SYMBOL
Input Transistor/Diode
V
F
I
R
Forward Voltage
Reverse Current
1.00
1.20
0.80
-
-
-
-
-
1.70
1.90
1.60
10
V
µA
I
F
= 20.0 mA
I
F
= 20.0 mA, T
A
= -55ºC
I
F
= 20.0 mA, T
A
= -100ºC
V
R
= 2.0 VDC
PARAMETER
MIN
TYP
MAX
UNITS
TEST CONDITIONS
Output Transistor
V
(BR)CEO
V
(BR)ECO
I
C(off)
Coupled
I
C(ON)
On-State Collector Current
(4)
Parameter A
OPB870
OPB870
OPB870
Parameter B
OPB871
OPB871
OPB871
Parameter C
OPB872
OPB872
OPB872
Collector-Emitter Saturation Voltage
OPB870
OPB871
OPB872
Output Rise Time
OPB870
OPB871
OPB872
Output Fall Time
OPB870
OPB871
OPB872
Collector-Emitter Breakdown Voltage
Emitter-Collector Breakdown Voltage
Collector-Emitter Dark Current
50
7.0
-
-
-
-
-
-
100
100
V
V
nA
µA
I
C
= 1.0 mA, I
F
= 0
I
E
= 100 µA, I
F
= 0
V
CE
= 10.0 V, I
F
= 0
V
CE
= 10.0 V, I
F
= 0, T
A
= 100ºC
500
200
200
-
-
-
-
-
-
µA
V
CE
= 10.0 V, I
F
= 20.0 mA
V
CE
= 10.0 V, I
F
= 20.0 mA, T
A
= -55ºC
V
CE
= 10.0 V, I
F
= 20.0 mA, T
A
= 100ºC
1000
400
400
-
-
-
-
-
-
µA
V
CE
= 5.0 V, I
F
= 10.0 mA
V
CE
= 5.0 V, I
F
= 10.0 mA, T
A
= -55ºC
V
CE
= 5.0 V, I
F
= 10.0 mA, T
A
= 100ºC
V
CE
= 0.4 V, I
F
= 20.0 mA
V
CE
= 0.4 V, I
F
= 20.0 mA, T
A
= -55ºC
V
CE
= 0.4 V, I
F
= 20.0 mA, T
A
= 100ºC
I
C
= 400 µA, I
F
= 20.0 mA
I
C
= 800 µA, I
F
= 10.0 mA
I
C
= 1800 µA, I
F
= 20.0 mA
1800
800
800
-
-
-
-
-
-
-
-
-
-
-
-
0.30
0.30
0.30
µA
V
CE(SAT)
V
t
r
-
-
-
-
-
-
15.0
20.0
20.0
µs
V
CC
= 10.0 V
I
F
= 20.0 mA
R
L
= 1000Ω
t
f
-
-
-
-
-
-
15.0
20.0
20.0
µs
V
CC
= 10.0 V
I
F
= 20.0 mA
R
L
= 1000Ω
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
TT Electronics | Optek Technology, Inc.
1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200
www.ttelectronics.com | sensors@ttelectronics.com
Issue B
11/2016
Page 3
High Reliability Slotted Optical
Switch
Packaging
E / Clear Top
Denotes LED
S / Black Top
Denotes Sensor
1
3
2
4
Pin # Emitter Pin # Transistor/Diode
1
2
Anode
Cathode
3
4
Collector / Anode
Emitter / Cathode
DIMENSIONS ARE IN:
[MILLIMETERS]
INCHES
CONTAINS POLYSULFONE
To avoid stress cracking, we suggest using ND Industries’
Vibra-Tite
for thread-locking.
Vibra-Tite
evaporates fast without causing structural failure in OPTEK’s molded plastics.
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
TT Electronics | Optek Technology, Inc.
1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200
www.ttelectronics.com | sensors@ttelectronics.com
Issue B
11/2016
Page 4
High Reliability Slotted Optical
Switch
Aperture Configuration 51 -
Middle of
to Emitter
OPB370N51 - Flag in
Flag Next
Slot
1.20
Top to Bottom
1.00
1.00
1.20
Aperture Configuration 51
Next to Sensor
OPB370N51 - Flag
- Flag Next to Sensor
Top to Bottom
Typical I
C(ON)
Response (mA)
0.80
Left to Right
0.60
Right to Left
Typical I
C(ON)
Response (mA)
0.80
Left to Right
0.60
Right to Left
0.40
0.40
0.20
0.20
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)
Displacement Distance (inches)
Aperture Configuration 51
in
Flag in Middle of Slot
OPB370N51 - Flag
-
Middle of Slot
1.20
Top to Bottom
1.00
0
Top to Bottom
Typical I
C(ON)
Response (mA)
0.80
Left to Right
0.60
Right to Left
Emitter
Left to Right
Right to Left
0.40
Sensor
0
Width
0.20
0.00
0.00
0.05
0.10
0.15
0.20
0.25
Displacement Distance (inches)
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
TT Electronics | Optek Technology, Inc.
1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200
www.ttelectronics.com | sensors@ttelectronics.com
Issue B
11/2016
Page 5
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