parameter symbol if-e91a unit peak wavelength peak 950 nm spectral bandwidth (50% of i max ) ? 40 nm output power coupled into plastic fiber (1 mm core diameter). distance lens to fiber min >100 ? 0.1 mm, 10 cm polished fiber, i f =20 ma -10 dbm switching times (10% to 90% and 90% to 10%) (r l =47 ? , i f =10 ma) t r , t f 1.0 s capacitance c 0 25 pf forward voltage (i f =50 ma) v f 1.5 max v temperature coefficient, peak tc 0.3 nm/k 19 industrial fiber optics, inc. plastic fiber optic ir led if-e9a-r plastic fiber optic ir led IF-E91A-R a pplications ? household appliances ? motor controller triggering ? pc-to-peripheral links ? medical instruments ? automotive electronics ? audio systems ? electronic games ? robotics communications d escription the IF-E91A-R is the replacement for the now obsolete motorola mfoe71 fiber optic led in industrial fiber optics?family of devices. each led consists of a polycarbonate (pc) housing, an internal active element such as an led subcomponent, and a cinch nut to hold the fiber in place. the pc housing retains the active element and the cinch nut while optimizing coupling between the active element and the jacketed 1000 ? plastic fiber. working with this family of fiber optics is simple: no special tools or training required. only a sharp knife or razor blade is needed to terminate the plastic fiber. when the fiber is inserted in the led or detector housing, tighten the cinch nut. thereafter, the fiber can be removed simply by loosening the nut. f eatures no optical design required mates with standard 1000 ? core jacketed plastic fiber cable internal micro-lens for efficient coupling inexpensive plastic connector housing connector-less fiber termination and connection interference-free transmission from light-tight housing excellent linearity m aximum r atings (t a = 25?) operating and storage temperature range (t op ,t stg ) .....................-40 to 85 c junction temperature (t j ) .............85 c soldering temperature (2 mm from case bottom) (t s ) t 5 s .................................240 c reverse voltage (v r ).........................3 v power dissipation (p tot ) t a = 25? ...................100 mw de-rate above 25? ..........1.33 mw/ c forward current, dc (i f ) ...........30 ma surge current (i fsm ) t 10 ?ec......1 a c haracteristics (t a =25?)
industrial fiber optics, inc. IF-E91A-R plastic fiber optic ir led IF-E91A-R plastic fiber optic ir led f igure 4. case outline. f igure 3. cross-section of fiber optic device. f iber t ermination i nstructions 1. cut off the ends of the optical fiber with a single- edge razor blade or sharp knife. try to obtain a precise 90-degree angle (square). 2. insert the fiber through the locking nut and into the connector until the core tip seats against the internal micro-lens. 3. screw the connector locking nut down to a snug fit, locking the fiber in place. f igure 1. normalized power launched versus forward current. f igure 2. typical spectral output vs. wavelength. p ackage i dentification : blue housing w/ blue & silver dot pin 1. anode pin 2. cathode 1/31/01
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