Red LED for optical link L10881 RC-LED for 156 Mbps POF communications The L10881 is designed for high-speed POF (plastic optical fiber) communications. The device is molded into miniature plastic package with lens, allowing easy and efficient coupling to a POF. Features Applications Red RC-LED for POF data link Plastic optical fiber communications (FA, office machine, home automation, LAN) Data transmission in locations subject to high electromagnetic noise Peak emission wavelength: 650 nm (suitable for POF communications) High-speed response: fc=70 MHz Typ. High output power: Po=-2 dBm (IF=20 mA, φ1 mm, POF) Designed to be used with the S7727 Absolute maximum ratings (Ta=25 °C) Parameter Symbol Value Forward current IF 50 *1 Power dissipation Pmax 130 *2 Operating temperature Topr 0 to 60 Storage temperature Tstg -40 to +85 Soldering 230 °C, 5 s, at least 1.5 mm away from package surface *1: Decreases at a rate of 0.57 mA/°C *2: Power dissipation decreases at a rate of 1.7 mW/°C above Ta=25 °C Unit mA mW °C °C - Forward current vs. ambient temperature 60 Forward current (mA) 50 40 30 20 10 0 -10 0 10 20 30 40 50 60 70 Ambient temperature (°C) KLEDB0340EA www.hamamatsu.com 1 L10881 Red LED for optical link Electrical and optical characteristics (Ta=25 °C) Parameter Symbol Condition Forward voltage VF IF=20 mA Peak emission wavelength IF=20 mA λp Spectral half width (FWHM) IF=20 mA Δλ *3 Fiber coupled optical power Po *3 Pulse distortion ΔT Cut-off frequency fc IF=20 mA ±1 mAp-p *3: Measured with the recommended driver circuit shown below. Min. 640 -4.5 -2.5 60 Typ. 1.9 650 -2 70 Max. 2.4 665 25 +0.5 2.5 - Unit V nm nm dBm ns MHz Recommended driver circuit Vcc Icc 0.1 µF 0.1 mF 1 14 74ACT08 3 2 SIGNAL INPUT R2 R1 1 2 3 4 7 C1 L10881(X) KLEDC0047EA Input is a pseudo-random bi-phase signal at 156 Mbps (NZR signal conversion). Average value (duty ratio 50 %) measured by using a plastic fiber of φ1 mm. SI-POF and NA=0.5 (GH4001 made by Mitsubishi Rayon). Vcc=5.0 V, R1=100 Ω, R2=300 kΩ, C1=20 pF Note: · A bypass capacitor (0.1 μF) and another capacitor (4.7 μF) are connected between Vcc and GND at a position within 3 mm from the lead. · The center of the optical fiber is aligned with the center of the lens on the package. The distance between the fiber end and the lens is 0.1 mm. · When using optical fibers with small core diameter, the fiber-coupled optical output power may vary. Emission spectrum (Typ. Ta=25 °C, IF=20 mA) 120 100 40 80 60 40 30 20 10 20 0 600 (Typ. Ta=25 °C, IF=20 mA) 50 Forward current (mA) Relative Fiber-coupled optical output power (%) Forward current vs. forward voltage 0 620 640 660 680 700 0 0.5 1.0 1.5 2.0 2.5 3.0 Forward voltage (V) Wavelength (nm) KLEDB0321EA KLEDB0322EA 2 Red LED for optical link L10881 Fiber-coupled optical output power vs. ambient temperature (ŎŦŢŴŶųŦťġŸŪŵũġŵũŦġųŦŤŰŮŮŦůťŦťġťųŪŷŦųġŤŪųŤŶŪŵ) 140 Relative Fiber-coupled optical output power (%) Output waveform example 120 100 80 60 40 20 0 -40 -20 0 20 40 60 Vertical axis: 30 mV/div., Horizontal axis: 5 ns/div. (Ta=25 °C, Vcc=5.00 V, R1=100 Ω, R2=300 Ω, CL=20 pF) 80 Ambient temperature (°C) KLEDB0323EA Dimensional outline (unit: mm) 1.77 5.2 ± 0.3 (Including burr) 0.97 5.0 0.4 10° 10° 4.3 1.8 (0.9) 4.5 ± 0.3 (Including burr) 6.6 ± 0.4 0.5 1.4 (1.5) (2.15) 4.3 0.69 0.25 1.27 1.27 1.27 (Specified at the lead root) (0.9) (0.9) 10° 10° 5.0 Cathode Cathode Anode Cathode Tolerance unless otherwise noted: ±0.1, ±2° Shaded area indicates burr. Values in parentheses indicate reference value. Lead surface finish: Silver plating Packaging: tray (100 pcs/tray) (Please consult us for large volume orders.) KLEDA0088EA Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. Type numbers of products listed in the specification sheets or supplied as samples may have a suffix “(X)” which means tentative specifications or a suffix “(Z)” which means developmental specifications. ©2010 Hamamatsu Photonics K.K. www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Solid State Division 1126-1 Ichino-cho, Higashi-ku, Hamamatsu City, 435-8558 Japan, Telephone: (81) 53-434-3311, Fax: (81) 53-434-5184 U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218 Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 8152-375-0, Fax: (49) 8152-265-8 France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10 United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777 North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01 Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741 Cat. No. KLED1053E02 Nov. 2010 DN 3