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.1 01/07
Page 1 of 2
Fiber Optic Transmitter
OPF670 Series
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Description:
The OPF670 series fiber optic transmitters are high performance devices packaged for data communication links.
These transmitters are an 850 nm GaAlAs LED and are specifically designed to efficiently launch optical power
into either 50/125µm or 62.5/125µm diameter multimode fiber. Three power ranges are offered, which allows the
designer to select a device best suited for the application.
The OPF670 is offered a low cost TO package with a plastic lens cap. The device is designed to be active aligned
into a connector receptacle.
Features:
• Low cost 850 nm LED technology
• Low cost TO package with electrically isolated plastic cap
• High thermal stability
• High optical coupling efficiency to multimode fiber
• Industrial temperature range
RoHS
Ordering Information
Part Number
LED Peak
Wavelength
PT50 (dBm)
Min
Tr, Tf (ns)
Typ / Max
OPF670-1 850nm -17.5 8.0/10.0
OPF670-2 850nm -16.0 8.0/10.0
OPF670-3 850nm -14.5 8.0/10.0
Applications:
• Industrial Ethernet equipment
• Copper-to-fiber media conversion
• Intra-system fiber optic links
• Video surveillance systems
Pin Function
1 Anode
2 Cathode
3 Not Connected
Fiber Optic Transmitter
OPF670 Series
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 .1 01/07
Page 2 of 2
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 +100° C
Operating Temperature Range -40° C to +85° 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. No Pre-bias.
4. 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.
SYMBOL MIN TYP MAX UNITS CONDITIONS
PT50
Total Coupled Power,
50/125 µm Fiber,
NA = 0.20
OPF670-1 -17.5 dBm
IF = 100 mA
OPF670-2 -16.0 dBm
OPF670-3 -14.5 dBm
VF Forward Voltage 1.5 2.1 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 8.0 10.0 ns IF = 100 mA; 10% to 90%(3)
PARAMETER
-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)
Forward Voltage
1.9
