Product Bulletin OPF340 August 1996 Fiber Optic GaAlAs High Speed LED Types OPF340A, OPF340B, OPF340C, OPF340D Features Absolute Maximum Ratings (TA = 25o C unless otherwise noted) • High radiant output for fiber optic Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 V Continuous Forward Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA(4) Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55o C to +150o C Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40o C to +125o C Lead Soldering Temperature [1/16 inch (1.6 mm) from case for 5 sec. with soldering iron] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240o C(1) applications • High speed • Electrically isolated from case Description The OPF340 series LED provides fiber optic users with high coupled power and wide bandwidth in an easily mounted package. The LED’s are designed to interface with multimode optical fibers from 50/125 to 200/300 microns. Notes: (1) RMA flux is recommended. Duration can be extended to 10 sec. max when flow soldering. (2) Graded index fiber, 50 µm core, N.A. = 0.20. (3) To convert radiant power output to dBm, use the following expression dBm = 10 log (µW/1000). (4) Derate linearly @ 1.0 mA/o C above 25o C. (5) Prebias @ 5 mA current. LED Burn-in All LED's are subject to 100% burn-in testing. Test conditions are 96 hours at 100 mA continuous current in 25o C ambient. TYPICAL COUPLED POWER into OPTICAL FIBER Fiber 50/125 µm Refractive Index Graded 62.5/125 µm 100/140 µm 1215 W. Crosby Road OPF340B OPF340A 0.20 7.5 µW 12.5 µW 18 µW 25 µW Graded 0.28 14 µW 22 µW 34 mW 45 µW Graded 0.29 38 µW 62 µW 95 µW 125 µW Step 0.41 140 µW 235 µW 340 µW 475 µW 200/300 µm* *PCS - Plastic Clad Silica Optek Technology, Inc. Typical Coupled Power o IF = 100mA @ 25 C N.A. OPF340D OPF340C Carrollton, Texas 75006 8-38 (972) 323-2200 Fax (972) 323-2396 Types OPF340A, OPF340B, OPF340C, OPF340D Electrical Characteristics (TA = 25o C unless otherwise noted) SYMBOL PARAMETER Radiant Power Output OPF340D OPF340C OPF340B OPF340A PO MIN TYP MAX UNITS 5.0 10.0 15.0 20.0 7.5 12.5 18.0 25.0 µW VF Forward Voltage λp Peak Output Wavelength B Spectral Bandwidth Between Half Power Points 35 tr Output Rise Time 4.5 6.0 tf Output Fall Time 4.5 6.0 830 TEST CONDITIONS IF = 100 mA(2) 1.8 2.0 V IF = 100 mA 850 870 nm IF = 50 mA nm IF = 50 mA ns IF = 100 mA, 10%-90%(5) ns IF = 100 mA, 90%-10%(5) Typical Performance Curves Forward Voltage vs. Forward Current Relative Coupled Power vs. Forward Current Temperatureso are stepped in 25 C increments. -50o C -50o C 100o C 100o C Temperatureso are stepped in 25 C increments. Forward Current - mA Forward Current - mA 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. 1215 W. Crosby Road Carrollton, Texas 75006 (972) 323-2200 Fax (972) 323-2396 8-39