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Sensing and Control
Reflective Object Sensor
OPB608A, OPB608B, OPB608C, OPB608R, OPB608V
Features:
•
•
•
•
•
Phototransistor output
Unfocused for sensing diffuse surface
Low cost plas c housing
Enhanced signal to noise ra o
Reduced ambient light sensi vity
DescripƟon:
OPB608 reflec ve switches consist of an infrared emi ng device (LED or VCSEL) and a NPN silicon phototransistor mounted “sideby-side” on a parallel axis in a black opaque plas c housing. All OPB608’s (except OPB608R) have an emi ng device and a
phototransistor that are encapsulated in a visible filtering epoxy. The phototransistor responds to radia on from the emi er only
when a reflec ve object passes within its field of view. The phototransistor has enhanced low current roll-off to improve the
contrast ra o and immunity to background irradiance. LED versions are designed for near-field applica ons. The VCSEL version is
designed for longer distances.
OPB608A, OPB608B and OPB608C devices are designed for applica ons with reflec ve distances between 0.050” (1.270 mm) and
0.375” (9.525 mm). OPB608V is designed for applica ons with reflec ve distances between 0.050” (1.270 mm) and
1.200” (30.480 mm). All of these are designed for light pa erns not visible to the human eye. By u lizing the night enhancement
func on of a camera, the near infrared light pa ern can be seen. This allows a user to see the pa ern shining on the reflec ve
object.
OPB608R is designed for applica ons with reflec ve distances between 0.050” (1.270 mm) and 0.300” (7.620 mm). It is designed
for light pa erns visible to the human eye. The efficiency of this sensor is lower for op cal wavelengths in the visible range, thus
reducing the distance that can be used.
Reflec ve distances are dependent upon the drive current for the light emi ng device, the wavelength of the light source, and the
type of reflec ve material; therefore, each applica on should be checked for the ability to meet each requirement.
Custom electrical, wire and cabling and connectors are available. Contact your local representa ve or OPTEK for more
informa on.
ApplicaƟons:
•
•
•
•
•
•
Non-contact reflec ve object sensor
Assembly line automa on
Machine automa on
Machine safety
End of travel sensor
Door sensor
Ordering InformaƟon
Part
Number
LED Peak
Wavelength
Sensor
ReflecƟon Distance
Inch (mm)
Lead
Length
See Graph
on Page 4
0.18"
(Min)
OPB608A
OPB608B
890 nm
OPB608C
Rbe Transistor
OPB608R
650 nm
OPB608V
850 nm
Addi onal laser safety informa on can be found on
the Optek website. See applica on #221.
Classifica on is not marked on the device due to space
limita ons. See package outline for centerline of
op cal radiance. Opera ng devices beyond maximum
ra ng may cause devices to exceed rated classifica on
General Note
TT Electronics reserves the right to make changes in product specificaƟon
without noƟce or liability. All informaƟon is subject to TT Electronics’ own data
and is considered accurate at Ɵme of going to print.
© TT electronics plc
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www. electronics.com
Issue D
05/2015
Page 1
Sensing and Control
Reflective Object Sensor
OPB608A, OPB608B, OPB608C, OPB608R, OPB608V
Absolute Maximum RaƟngs (TA=25°C unless otherwise noted)
Storage Temperature Range
Opera ng Temperature Range
-40° C to +85° C
OPB608 A, B, C & R
OPB608V
-40° C to +85° C
0° C to +70° C
Lead Soldering Temperature [1/16 inch (1.6mm) from the case for 5 sec. with soldering iron](1)
260° C
Total Power Dissipa on
100 mW
OPB608A, OPB608B, OPB608C (Infrared-LED — 890 nm)
Forward DC Current
50 mA
Peak Forward Current (1 μs pulse width, 300 pps)
3A
Reverse DC Voltage
2V
OPB608R (Visible Red-LED — 650 nm)
Forward DC Current
50 mA
Reverse DC Voltage
5V
OPB608V (Infrared-VCSEL — 850 nm)
Forward DC Current
12 mA
Reverse DC Voltage
5V
Phototransistor
Collector-Emi er Voltage
30 V
Emi er Reverse Current
10 mA
Collector DC Current
25 mA
Notes:
(1) RMA flux is recommended. Dura on can be extended to 10 seconds maximum when flow soldering.
(2) Methanol or isopropanol are recommended as cleaning agents. The plas c housing is soluble in chlorinated hydrocarbons and keytones.
Pin #
LED
Pin #
Transistor
4
Cathode
1
Collector
3
Anode
2
Emi er
4
1
3
2
[ MILLIMETERS]
DIMENSIONS ARE IN:
INCHES
General Note
TT Electronics reserves the right to make changes in product specificaƟon
without noƟce or liability. All informaƟon is subject to TT Electronics’ own data
and is considered accurate at Ɵme of going to print.
© TT electronics plc
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www. electronics.com
Issue D
05/2015
Page 2
Sensing and Control
Reflective Object Sensor
OPB608A, OPB608B, OPB608C, OPB608R, OPB608V
Electrical CharacterisƟcs (TA = 25°C unless otherwise noted)
SYMBOL
PARAMETER
MIN
TYP
MAX
UNITS
TEST CONDITIONS
Infrared-LED (880 nm) (See OP240 for addi onal informa on)
VF
Forward Voltage
-
-
1.7
V
IF = 20 mA
IR
Reverse Current
-
-
100
µA
VR = 2 V
Infrared-LED (650 nm)
VF
Forward Voltage
-
1.9
2.5
V
IF = 20 mA
VR
Reverse Voltage
5
-
-
V
IR = 10 µA
Infrared VCSEL (850 nm) (See OPV330 for addi onal informa on)
VF
Forward Voltage
-
-
2.2
V
IF = 7 mA
IR
Reverse Current
-
-
30
nA
VR = 5 V
ITH
Threshold Current
2
-
5.5
mA
Θ
Beam Divergence
-
12
-
Deg.
IF = 12 mA
Phototransistor (See OP705 for addi onal informa on)
V (BR)CEO
Collector Emi er Breakdown Voltage
30
-
-
V
IC = 100 µA, EE = 0 µW/cm2
V (BR)ECO
Emi er Collector Breakdown Voltage
0.4
-
-
V
IE = 100 µA, EE = 0 µW/cm2
VCE(SAT)
Satura on Voltage
-
-
.40
V
IC = 100 µA, IF = 20 mA, d = 0.053”
Collector Emi er Dark Current
-
-
100
nA
VCE = 5 V, EE = ≤ .10 µW/cm2, IF = 0
2
1
0.5
1
-
4
6
5
-
-
-
-
100
100
ICEO
Combined
IC(ON)
On-State Collector Current
OPB608A
OPB608B
OPB608C
OPB608R
OPB608V
IC(OFF)
Off-State Collector Current
LED
VCSEL
mA
VCE = 5 V, IF = 20 mA, d = 0.053 inch (1.35
mm)(1)(2)
VCE = 5 V, IF = 10 mA, d = 0.053 inch (1.35
mm)(1)(2)
nA
No reflec ve surface, VCE = 5 V
IF = 20 mA
IF = 10 mA
Notes:
(1) Distance from the front of the lens to reflec ve surface.
(2) Measured using Eastman Kodak gray card. The white side of the card is used as a 90% diffuse reflec ve surface. Reference Eastman Kodak
catalog #E152 7795
(3) All parameters are tested using pulse techniques.
General Note
TT Electronics reserves the right to make changes in product specificaƟon
without noƟce or liability. All informaƟon is subject to TT Electronics’ own data
and is considered accurate at Ɵme of going to print.
© TT electronics plc
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www. electronics.com
Issue D
05/2015
Page 3
Sensing and Control
Reflective Object Sensor
OPB608A, OPB608B, OPB608C, OPB608R, OPB608V
Kodak 90% Card Normalized Output vs
Object Distance
Collector Current vs Diode Forward Current
5
100.00
Normalized with OP B608 Kodak 90% at 0.05"
Vce = 5 Volts
St andard Test Condit ions
Normalized for OPB608 @ 20mA
5
Test ing Condit ion:
VCE =5 Volt s
4
IC(ON) - Typical Collector Current - mA
10.00
IF =20mA (OPB608
and OPB608R)
Normalized Output
OPB608V
4
IF =10mA ( OPB608V)
OPB608
1.00
OPB608R
OPB608
3
OPB608R
OPB608V
3
2
0.10
2
1
0.01
1
0.00
0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
Rise and Fall vs Load Resistance
20
30
40
50
Collector Current vs Ambient Temp.
180
140%
OPB608R - Tr
OPB608R - Tf
160
OPB608 - Tr
120%
OPB608 - Tf
OPB608V - Tr
140
Normalized Collector Current (%)
Tr,Tf - Switching Speed - µsec
10
IF - Forw ard Current - m A
Object Distance (inches)
OPB608V - Tf
120
10%Dut y Cycle
1ms Pulse Widt h
Vce =5 Volt s
100
IF =20 mA ( OPB608 and
OPB608R)
IF =10 mA ( OPB608V)
80
Dist ance =0.057"
60
40
100%
80%
OPB608R
OPB608
OPB608V
60%
Normalized at 25°C f or each
product t ype
Vce = 5 Volt s
IF = 20 mA (OPB608
and OPB608R)
IF = 10 mA (OPB608V)
Dist ance = 0.053"
40%
20%
20
0
0
1000
2000
3000
4000
5000
RL - Load resistance - Ohm s
General Note
TT Electronics reserves the right to make changes in product specificaƟon
without noƟce or liability. All informaƟon is subject to TT Electronics’ own data
and is considered accurate at Ɵme of going to print.
© TT electronics plc
0%
-40 -30 -20 -10 0
10 20 30 40 50 60 70 80 90
Ta - Am bient Tem perature - °C
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www. electronics.com
Issue D
05/2015
Page 4
Sensing and Control
Reflective Object Sensor
OPB608A, OPB608B, OPB608C, OPB608R, OPB608V
Reflective Response
Reflective Response
5000
6000
4500
5000
4000
3500
4000
3000
2500
3000
2000
1500
Inkjet Green
1000
2000
Inkjet 20% Black
Inkjet Yellow
500
1000
Laserjet 20% Black
Inkjet Cyan
0
OPB608V
OPB608
Laser 20% Black
0
Inkjet Magenta
OPB608V
OPB608R
Copier 20% Black
OPB608
Reflective Response
Reflective Response
1200
3000
1000
2500
800
2000
600
1500
400
1000
200
Thermal Paper
0
OPB608
OPB608R
500
Black Thermal Paper
Silver Tape
0
OPB608V
OPB608R
Reflective Response
White Plastic
OPB608
OPB608R
Relative Response
5000
100
4500
90
4000
80
3500
70
3000
60
2500
50
2000
1500
1000
500
0
40
30
20
Laserjet Black
10
Inkjet Black
0
OPB608V
Copier Black
OPB608
OPB608V
Gray 18%
OPB608
OPB608R
OPB608R
General Note
TT Electronics reserves the right to make changes in product specificaƟon
without noƟce or liability. All informaƟon is subject to TT Electronics’ own data
and is considered accurate at Ɵme of going to print.
© TT electronics plc
White 90%
1645 Wallace Drive, Carrollton, TX 75006|Ph: +1 972 323 2200
www.optekinc.com | www. electronics.com
Issue D
05/2015
Page 5