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.4 08/08
Page 1 of 3
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Slotted Optical Switch
OPB818
Features:
• Choice of aperture
• Choice of opaque or IR transmissive shell material
• Non-contact switching
• Mounts directly to PCBoard or dual-in-line socket
• 0.400” (10.16 mm) lead spacing
• 0.200” (5.08 mm) slot width. 0.250” (6.35 mm) slot depth
Product Photo Here
RoHS
1 3
2 4
Description:
The OPB818 slotted switch consists of an infrared emi tting diode and an NPN silicon phototransistor mounted in a
low-cost black plastic housing on opposite sides of a 0.200” (5.080 mm) wide slot. Switching of the phototransisto r
occurs whenever an opaque object passes through the slot.
The OPB818 is designed for direct soldering into PCBoards or for mounting in standard dual-in-line sockets and
has an 0.25” (6.35 mm) de ep and 0.20” (5.08 mm) wide slot. The aperture s are 0.033” (0.84 mm) in diameter on
both the sensor side (“S”) a s well a s on the emitter side (“E”).
Custom electrical, wire an d cabling and connectors a re available. Contact your local rep re sentative or OPTEK for
more information.
Ordering Information
OPB818 Slotted Optical Switch
(mounts directly to PCBoards
or to dual-in-line socket)
Part
Number Description
Applications:
• Non-contact object sensing
• Assembly line automation
• Machine automation
• Equipment security
• Machine safety
DIMENSIONS ARE IN:
INCHES
[ MILLIMETERS]
Pin # Description Pin # Description
1 Anode 3 Collector
2 Cathode 4 Emitter
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 .4 08/08
Page 2 of 3
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Slotted Optical Switch
OPB818
Electrical Characteristics (TA = 25°C unless otherwise noted)
SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS
Input Diode (see OP240 for additional information)
VF Forward Voltage - - 1.7 V IF = 20 mA
IR Reverse Current - - 100 µA VR = 2 V
Output Phototransistor (see OP550 for additional information)
V(BR)(CEO) Collector-Emitter Breakdown Voltage 30 - - V IC =1 mA
V(BR)(ECO) Emitter-Collector Breakdown Voltage 5 - - V IE = 100 µA
ICEO Collector-Emitter Leakage Current - - 100 nA VCE = 10 V, IF = 0, EE = 0
Coupled
IC(ON) On-State Collector Current 100 - - µA VCE = 10 V, IF = 20 mA
VCE(SAT) Collector-Emitter Saturation Voltage - - 0.4 V IC = 50 µA, IF = 20 mA
Absolute Maximum Ratings (TA=25°C unless otherwi se noted)
Storage & Operating Temperature Range -40°C to +85° C
Lead Soldering Temperature [1/16 inch (1.6 mm) from the case for 5 sec. with soldering iron](1) 260° C
Input Diode
Forward DC Current 50 mA
Peak Forward Current (1 µs pulse width, 300 pps) 1 A
Reverse DC Voltage 2 V
Power Dissipation(2) 75 mW
Output Phototransistor
Collector-Emitter Voltage 30 V
Emitter-Collector Voltage 5 V
Power Dissipation(2) 100 mW
Collector DC Current 30 mA
Notes:
(1) RMA flux is recommended. Duration can be extended to 10 seconds maximum when flow soldering.
(2) Derate linearly 1.67 mW/°C above 25° C.
(3) All parameters were tested using pulse techniques.
(4) Leads are 0.20” square (5.080 mm) and 0.425” long (10.80 mm), minimum.
(5) Methanol or isopropanol are recommended as cleaning agents. Plastic housing is soluble in chlorinated hydrocarbons and
ketones. Spray and wipe; do not submerge.
(6) Polarity is denoted by color of housing top: LED (gray or clear), sensor (black).
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.4 08/08
Page 3 of 3
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Slotted Optical Switch
OPB818
OPB818 - 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)
Right to Left
Left to Right
Top to Bottom
OPB818 - 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 I
C(ON)
Response (mA )
Right to Left
Left to Right
Top to Bottom
OPB818 - 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)
Respon se (m A )
Right to Left
Left to Right
Top to Bottom
Emitter
Sensor
Left to Right Right to Left
0Width
Top to Bottom
0
