OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323– 2396 sensors@optekinc.com www.optekinc.com
Issue A 03/2011
Page 1 of 3
Fiber Optic Transmitter
OPF340 Series
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Applications
♦ Industrial Ethernet equipment
♦ Copper-to-fiber media conversion
♦ Intra-system fiber optic links
♦ Video surveillance systems
OPF340 Series
• Low Cost 850 nm LED technology
• Hermetic metal can package
• High thermal stability
• High optical coupling efficiency to multimode fiber
• Industrial temperature range
• 55 MHz Bandwidth
The OPF340 series fiber optic transmitters are high performance devices packaged for data communication links. This trans-
mitter is an 850 nm GaAlAs LED and is specifically designed to efficiently launch optical power into fibers ranging in size from
50/125µm up to 200/300µm diameter fiber. Multiple power ranges with upper and lower limits are offered which allows the de-
signer to select a device best suited for the application.
This product’s combination of features including high speed and efficient coupled power makes it an ideal transmitter for inte-
gration into all types of data communications equipment.
RoHS
Typical Coupled Power
IF = 100mA, 25°C
Fiber Size Type N.A. OPF340A
50/125 µm Graded Index 0.20 25µW
62.5/125 µm Graded Index 0.28 45µW
100/140 µm Graded Index 0.29 125µW
200/300 µm Step Index 0.41 475µW
OPF340D
7.5µW
14µW
38µW
140µW
OPF340B
18µW
34µW
95µW
340µW
OPF340C
12.5µW
22µW
62µW
235µW
Fiber Optic Transmitter
OPF340 Series
OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323– 2396 sensors@optekinc.com www.optekinc.com
Issue A 03/2011
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.
Electrical/Optical Characteristics (TA = 25°C unless otherwise noted)
Absolute Maximum Ratings
TA = 25o C unless otherwise noted
Storage Temperature Range -55° C to +150° C
Operating Temperature Range -40° C to +125° C
Lead Soldering Temperature(1) 260° C
Continuous Forward Current(2) 100 mA
Maximum Reverse Voltage 1.0 V
Notes:
1. Maximum of 5 seconds with soldering iron. Duration can be extended to 10 seconds when flow soldering. RMA flux is recommended.
2. De-rate linearly at 1.0mA /°C above 25°C .
3. The component must be actively aligned into the mating fiber cable assembly to achieve optimal performance.
4. No Pre-bias.
5. All Optek fiber optic LED products are subjected to 100% burn-in as part of its quality control process. The burn-in conditions are 96
hours at 100mA drive current and 25°C ambient temperature.
-40°C
80°C
Temperatures are Stepped
in 20°C increments.
0 20 40 60 80 100
0
0.2
1.2
0.4
0.6
0.8
1.0
1.4
Relative Coupled Po wer vs.
Forward Current
Forward Current (mA)
Relative Coupled Power
-40°C
80°C
Temperatures are Stepped
in 20°C increments.
0 20 40 60 80 100
1.2
1.3
1.8
1.4
1.5
1.6
1.7
2.0
Typical Forward Voltage vs.
Forward Current
Forward Current (mA)
Relative Coupled Power
1.9
SYMBOL PARAMETER MIN TYP MAX UNITS CONDITIONS
PT50
(3)
Total Coupled Power
OPF340A 20.0 25.0
µW IF = 100 mA
OPF340B 15.0 18.0
50/125 mm Fiber NA = 0.20
OPF340C 10.0 12.5
OPF340D 5.0 7.5
VF Forward Voltage 1.8 2.2 V IF = 100 mA
VR Reverse Voltage 1.8 V IR = 100 µA
λ Wavelength 830 850 870 nm IF = 50 mA
Δλ Optical Bandwidth 35 nm IF = 50 mA
tr,tf Rise and Fall Time 4.5 6.0 ns IF = 100 mA; 10% to 90%(4)
OPTEK Technology Inc.— 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323– 2396 sensors@optekinc.com www.optekinc.com
Issue A 03/2011
Page 3 of 3
Fiber Optic Transmitter
OPF340 Series
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Mechanical Data
DIMENSIONS ARE IN INCHES (MILLIMETERS)
