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.2 08/07
Page 1 of 2
Fiber Optic Isolator—Phototransistor Sensor
OPI1280 Series
Features:
• Opaque plastic housings
• High noise immunity
• Visible Red LED with Phototranisitor Output
• 0.05” (1.27 mm) lead spacing
• Data Transfer through plastic fiber optic cable
• Isolation voltage 15 KV (OPI1280-032), Longer versions higher
RoHS
Description:
Each OPI1280 consists of a visible Red LED and a Phototra nsistor sens or, which are housed in separ ate opaque molded
plastic housings and coupled by plastic fiber optic cable. The heavy-duty opaque housing shields the optical signal from dust,
making this series of devices ideal for dust contaminated enviro nments.
The OPI1280 series are designed for applications that require high voltage isolation between inp ut and output or signal
communication over short distances. Dep ending on the length of the fiber optic cable, the emitter does not have to be optically
in-line with the sensor. The isolati on voltage is greater than 10 K volts per inch (Isolation distance between components) for all
versions of the OPI1280.
Custom electrical, wire and cabling and connectors are available. Contact your local representative or OPTEK for more
information.
Applications:
• Requiring High Voltage isolation between input
and output
• Electrical isolation in dirty envi ronments
• Industrial equipment
• Medical equipm ent
1 3
2 4
Pin # LED Pin # Transistor
1 Anode 3 Emitter
2 Cathode 4 Collector
Ordering Information
Part
Number LED Peak
Wavelength Lead
Length
OPI1280-018
645 nm
OPI1280-026
OPI1280-032 0.45”
[11.4 mm]
Device
Length
1.26” [32.0 mm]
1.57” [40.0 mm]
1.80” [45.8 mm]
Isolation
Distance
0.71” [18 mm]
1.02” [26 mm]
1.26” [32 mm]
OPI1280-040 1.57” [40 mm] 2.12” [53.8 mm]
OPI1280-066 2.60” [66 mm] 3.15” [80.0 mm]
OPI1280-080 3.15” [80 mm] 3.69” [93.8 mm]
Device
Length [9.0]
-.355
-
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.2 08/07
Page 2 of 2
Fiber Optic Isolator—Phototransistor Sensor
OPI1280 Series
Absolute Maximum Ratings (TA=25°C unless otherwi se noted)
Storage Temperature Range (note 4) -40o C to +80o C
Operating Temperature Range (note 4) -20° C to +75° C
Power Dissipation (2) 100 mW
Lead Soldering Temperature [1/16 inch (1.6 mm) from case for 5 seconds with soldering iron] 260° C(1)
Electrical Characteristics (TA = 25°C unless othe rwise noted)
SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS
LED (See OP240 for additional information)
VF On-State Collector Current 0.9 - 1.5 V IF = 20 mA
IR Collector-Dark Current - - 80 µA VR = 3.0 V
SENSOR—Phototransistor (See OP240 for additional information)
ICEO Collector Dark Current - - 50 nA VCE = 10 V, EE = 0
V(BR)CEO Collector-Emitter Breakdown Voltage 33 - - V IC = 100 µA, EE = 0
V(BR)ECO Emitter-Collector Breakdown Voltage 5.5 - - V IE = 100 µA, EE = 0
COUPLED
IC(ON) 0.36 - - mA VCE = 5 V, IF = 10 mA
IISO(3) - - 1.0 µA I @ 7 KV RMS, 25° C, Test Duration = 2 sec.
Output Current vs Forward Current vs Temperature
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0 5 10 15 20 25 30 35 40
Forward Current ( mA)
Normalized Output Current
-40°C
-20°C
0°C
20°C
40°C
60°C
80°C
100°C
Normalized I
F
= 10mA, Vce = 5V, Ta = 20°C
Notes:
1. RMA flux is recommended. Duration can be extended to 10 seconds maximum when flow soldering. A maximum 20 grams force
may be applied to the leads when soldering.
2. Derate linearly 1.33 mW/° C above 25° C.
3. Isolation voltage testing is required.
4. Storage and Operating temperature values are based on the plastic optical interface temperature ratings. Please reference UL1577
and UL file AVLVZ.E89328