CatalogFilm_12601. 12/20/01 4:30 PM Page 61 Plastic Fiber Optic IR LEDS IF-E91 DESCRIPTION The IF-E91A and IF-E91B are high-output medium-speed infrared LEDs in a “connector-less” style plastic fiber optic package. The output spectrum peaks at 950 nm for the IF-E91A and 880 nm for the IF-E91B. The device package features an internal micro-lens, and a precision-molded PBT housing ensures efficient optical coupling into standard 1000 µm plastic fiber cable. A P P L I C AT I O N H I G H L I G H T S The high output and fast transition times of the IF-E91A and IF-E91B make them suitable for low-cost analog and digital data links. Used with an IF-D96 photologic detector, the IF-E91A and IF-E91B can achieve data rates of 500 Kbps and 1 Mbps respectively at link distances up to 7 m. The drive circuit design is simpler than required for laser diodes, making the IF-E91A and IF-E91B excellent low-cost alternatives in a variety of analog and digital applications. A P P L I CAT I O N S ➤ ➤ ➤ ➤ ➤ ➤ ➤ ➤ ➤ Low-Cost Analog and Digital Data Links Digitized Audio Optical Sensors Medical Instruments Robotics Communications Motor Controller Triggering EMC/EMI signal Isolation Electronic Games Intra-System Links: Board-toBoard, Rack-to-Rack F E AT U R E S ◆ Excellent Linearity ◆ No Optical Design Required ◆ Mates with Standard 1000 µm 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 M A X I M U M R AT I N G S C HA R A C T E R I S T I C S (TA=25°C) (TA =25°C) Parameter Symbol Peak Wavelength λPEAK IF-E91A IF-E91B* Unit Operating and Storage Temperature Range (TOP,TSTG) .....................-40° to 85°C 950 880 nm Spectral Bandwidth (50% of IMAX) ∆λ 40 80 nm Output Power Coupled into Plastic Fiber (1 mm core diameter). Distance Lens to Fiber ≤0.1 mm, 10 cm polished fiber, IF=20 mA Switching Times (10% to 90% and 90% to 10%) (RL=47 Ω, IF=10 mA) Capacitance Φ min >100 -10 >75 -11.2 µW dBm 1.0 25 0.5 25 µs pF Junction Temperature (TJ) .............85°C Soldering Temperature (2 mm from case bottom) (TS) t ≤ 5s .................................240°C Reverse Voltage (VR).........................3 V Power Dissipation (PTOT) TA =25°C...................100 mW De-rate Above 25°C ..........1.33 mW/°C Forward Voltage (IF=50 mA) Temperature Coefficient, λPEAK tr, tf C0 Vf 1.5 max 1.7 max V TCλ 0.3 0.3 nm/K * IF-E91D recommended for new designs Forward Current, DC (IF) IF-E91A ....................................50 mA IF-E91B ..................................100 mA Surge Current (IFSM) t ≤ 10 µsec IF-E91A ........................................ 2 A IF-E91B .........................................2 A Industrial Fiber Optics, Inc. • www.i-fiberoptics.com 41 CatalogFilm_12601. 12/20/01 4:30 PM Page 58 IF-E91 FIGURE 1. Plastic Fiber Optic IR LEDs Normalized power launched versus forward current. FIGURE 3. Cross-section of fiber optic device. F I B E R T E R M I NAT I O N I N S T R U C T IO N S 1. Cut off the ends of the optical fiber with a singleedge 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. FIGURE 2. Typical spectral output vs. wavelength. PACKAGE IDENTIFICATION: ◆ E91A– Blue housing w/ Blue dot E91B– Blue housing w/ Green dot • PIN 1. Cathode • PIN 2. Anode FIGURE 4. 42 Case outline. Industrial Fiber Optics, Inc. • www.i-fiberoptics.com