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 B 10/2011
Page 1 of 6
High Reliability Slotted Optical Switch
OPB870, OPB871, OPB872 (TX, TXV)
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
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
RoHS
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.
Contact your local representative or OPTEK for more information.
Product Photo Here
Applications:
Non-contact object sensing
Assembly line automation
Machine automation
Equipment safety
Machine safety
Military and harsh environments
L
N
P
T
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 B 10/2011
Page 2 of 6
High Reliability Slotted Optical Switch
OPB870, OPB871, OPB872 (TX, TXV)
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Pin # Emitter Pin # Transistor/Diode
1 Anode 3 Collector / Anode
2 Cathode 4 Emitter / Cathode
2 4
1 3
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 Sensor Aperture:
1 0.010” (0.254 mm)
5 0.050” (1.270 mm)
Discrete Shell Material:
7 — Base mount opaque Emitter Aperture:
Plastic discrete shell 1 — 0.010” (0.254 mm)
PC mountable leads 5 0.050” (1.270 mm)
Mounting Configurations:
N — No mounting tabs
L — Emitter side mounting tab only
T — Two mounting tabs
P — Phototransistor side mounting tab only
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 = 0.320”)
Note: Assemblies with dual 0.010” apertures are
currently available only with electrical
E / Clear Top
Denotes LED
S / Black Top
Denotes Sensor
DIMENSIONS ARE IN: INCHES
[MILLIMETERS] 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.
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 B 10/2011
Page 3 of 6
High Reliability Slotted Optical Switch
OPB870, OPB871, OPB872 (TX, TXV)
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Absolute Maximum Ratings (TA = 25° C unless otherwise noted)
Storage Temperature(1) -65° C to +150° C
Operating Temperature(1) -65° C to +125° C
Lead Soldering Temperature(3) 240° C
Input LED
Forward DC Current 50 mA
Peak Forward Current (1µs pulse width, 300 pps) 1.0 A
Reverse DC Voltage 2.0 V
Power Dissipation(2) 100 mW
Output Phototransistor/Diode
Collector-Emitter Voltage 50 V
Emitter-Collector Voltage 7.0 V
Collector DC Current 30 mA
Power Dissipation 100 mW(2)
Notes:
(1) Derate linearly 1.00 mW/° C above 25° C.
(2) Cleaning agents methanol and isopropanol are recommended. Spray or wipe; do not submerge.
(3) RMA flux is recommended. Duration can be extended to 10 seconds maximum when flow soldering.
(4) All parameters were tested using pulse technique.
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 B 10/2011
Page 4 of 6
High Reliability Slotted Optical Switch
OPB870, OPB871, OPB872 (TX, TXV)
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Electrical Characteristics (TA = 25°C unless otherwise noted)
SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS
Input Transistor/Diode
VF Forward Voltage
1.00
1.20
0.80
-
-
-
1.70
1.90
1.60
V
IF = 20.0 mA
IF = 20.0 mA, TA = -55ºC
IF = 20.0 mA, TA = -100ºC
IR Reverse Current - - 10 µA VR = 2.0 VDC
Output Transistor
V(BR)CEO Collector-Emitter Breakdown Voltage 50 - - V IC = 1.0 mA, IF = 0
V(BR)ECO Emitter-Collector Breakdown Voltage 7.0 - - V IE = 100 µA, IF = 0
IC(off) Collector-Emitter Dark Current -
-
100
100
nA
µA
VCE = 10.0 V, IF = 0
VCE = 10.0 V, IF = 0, TA = 100ºC
Coupled
IC(ON) On-State Collector Current(4)
Parameter A
OPB870
OPB870
OPB870
500
200
200
-
-
-
-
-
-
µA
VCE = 10.0 V, IF = 20.0 mA
VCE = 10.0 V, IF = 20.0 mA, TA = -55ºC
VCE = 10.0 V, IF = 20.0 mA, TA = 100ºC
Parameter B
OPB871
OPB871
OPB871
1000
400
400
-
-
-
-
-
-
µA
VCE = 5.0 V, IF = 10.0 mA
VCE = 5.0 V, IF = 10.0 mA, TA = -55ºC
VCE = 5.0 V, IF = 10.0 mA, TA = 100ºC
Parameter C
OPB872
OPB872
OPB872
1800
800
800
-
-
-
-
-
-
µA
VCE = 0.4 V, IF = 20.0 mA
VCE = 0.4 V, IF = 20.0 mA, TA = -55ºC
VCE = 0.4 V, IF = 20.0 mA, TA = 100ºC
VCE(SAT)
Collector-Emitter Saturation Voltage
OPB870
OPB871
OPB872
-
-
-
-
-
-
0.30
0.30
0.30
V
IC = 400 µA, IF = 20.0 mA
IC = 800 µA, IF = 10.0 mA
IC = 1800 µA, IF = 20.0 mA
tr
Output Rise Time
OPB870
OPB871
OPB872
-
-
-
-
-
-
15.0
20.0
20.0
µs
VCC = 10.0 V
IF = 20.0 mA
RL = 1000
tf
Output Fall Time
OPB870
OPB871
OPB872
-
-
-
-
-
-
15.0
20.0
20.0
µs
VCC = 10.0 V
IF = 20.0 mA
RL = 1000
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 B 10/2011
Page 5 of 6
High Reliability Slotted Optical Switch
OPB870, OPB871, OPB872 (TX, TXV)
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPB370N51 - Flag in Middle of Slot
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0.00 0.05 0.10 0.15 0.20 0.25
Displac em e nt Distance (inches)
Typical I
C(ON)
Response (mA)
Left to Righ
t
Right to Left
To
p
to Bottom
Aperture Configuration 51 - Flag Next to Emitter
OPB370N51 - Flag Next to Sensor
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0.00 0.05 0.10 0.15 0.20 0.25
Displace m e nt Distance (inch es)
Typical I
C(ON)
Response (mA)
Left to Ri
g
h
t
Right to Left
To
p
to Bottom
Aperture Configuration 51 - Flag Next to Sensor
OPB370N51 - Flag in Mi ddle of Slot
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0.00 0.05 0.10 0.15 0.20 0.25
Displacement Distance (inches)
Typical I
C(ON)
Response (mA)
Left to Righ
t
Right to Left
To
p
to Bottom
Aperture Configuration 51 - Flag in Middle of Slot
Emitter
Sensor
Left to Right Right to Left
0Width
Top to Bottom
0
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 B 10/2011
Page 6 of 6
High Reliability Slotted Optical Switch
OPB870, OPB871, OPB872 (TX, TXV)
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPB380T55 - Flag Next to Emitter
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0.00 0.05 0.10 0.15 0.20 0.25
Displacement Distance (inches)
Typical IC(ON) Response (mA)
Left to Righ
t
Right to Left
To
p
to Bottom
Aperture Configuration 55 - Flag Next to Emitter
OPB380T55 - Flag Next to Sensor
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0.00 0.05 0.10 0.15 0.20 0.25
Displacement Distance (inches)
Typical I
C(ON)
Response (mA )
Left to Righ
t
Right to Left
To
p
to Bottom
Aperture Configuration 55 - Flag Next to Sensor
OPB380T55 - Flag in Middle of Slot
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0.00 0.05 0.10 0.15 0.20 0.25
Displacement Distance (inches)
Typical I
C(ON)
Response (mA)
Left to Righ
t
Right to Left
To
p
to Bottom
Aperture Configuration 55 - Flag in Middle of Slot
Emitter
Sensor
Left to Right Right to Left
0Width
Top to Bottom
0