SFH757 and SFH757V Transmitter for Polymer Optical Fiber Applications Data Sheet Description Features The SFH757 is a low-cost transmitter diode for optical data transmission with polymer optical fiber. Its InGaAlP LED chip provides enhanced resistance to humidity and is designed to emit light at 650 nm. The robust SFH757 can be used for speeds up to 100 MBd and complements the Avago SFH250 photodiode receiver and SFH551/1-1 integrated photo detector receiver. * High speed transmitter for up to 100MBd applications (with peaking circuits) * 2.2mm aperture holds standard 980/1000/2200m plastic fibers * No fiber stripping required * Molded microlens for efficient coupling The SFH series is optimized for easy coupling. No fiber stripping is required; just insert the cut fiber into the selected SFH component. Plastic Direct Fiber Connector housing (V-housing) SFH757 * Locking screw attached to the connector The transparent plastic package has an aperture where a 2.2 mm fiber end can be inserted. This very easy coupling method is extremely cost-effective. * Interference-free transmission by the light-tight housing * Transmitter and receiver can be positioned flexibly * No cross talk SFH757V The V-housing allows easy coupling of unconnectorized 2.2 mm polymer optical fiber with an axial locking screw. Ordering Information * Auto insertable and wave solderable * Supplied in tubes Applications * Household electronics * Power electronics * Optical networks * Light barriers Application Literature SFH757 SFH757V Type Ordering Code SFH757 SP000063871 SFH757V SP000063858 AN # Description 5342 General information about the SFH series with Selection Guide and recommendations regarding System Planning and Mounting 5341 Information about Basic and Special Circuits for Transmitter and Receiver of the SFH series Package Dimensions SFH757 view from A 8.6 surface not flat 0.5 0.5 0.6 7.65 1.5 4.6 4.625 28 2.275 2.54 A 5.3 Cathode Dimensions in mm SFH757V 24.0 9.0 13.5 Cathode 3.5 4.8 8.8 SFH757 component 0.5 0.6 locking screw 7.62 spacing 2.54 5.08 Dimensions in mm Package V-housing Color Package V-housing axial locking screw SFH V-series components are color coded just like other Avago fiber optic components. The SFH757V transmitter has a white colored housing; the SFH250V and SFH551/11V receiver components have a black colored housing. This prevents mistakes while making connections. Product designation and date of manufacture are printed on the housing. Components of the SFH V-series are equipped with an axial locking screw for easy coupling to the unconnectorized 2.2 mm polymer optical fiber. The force that is necessary to pull a jammed fiber out of the V-housing is typically 50 N (with a torque of 15 cNm for tightening the locking screw). This is an approximate value that is very dependent on the fiber and torque combination. Package V-housing mounting pins SFH V-series components have two pins that are electrically isolated from the inner circuit. The pins are only designed for mounting the V-housing to the PCB surface. This helps increase stability, which is needed during fixing the fiber end by the axial locking screw. The retention force between the soldered mounting pins and the V-housing of the SFH component is about 20 N (with a vertical exertion of force). This is an approximate value. 2 Package V-housing mounting pins Package V-housing axial locking screw Technical Data Absolute Maximum Ratings Parameter Symbol Min Operating Temperature range TC Storage Temperature range Tstg Junction Temperature Soldering Temperature (2mm from case bottom, t5s) Typ Max Unit Notes -40 +85 C -40 +100 C TJ +100 C TS +260 C Reverse Voltage VR 3 V Forward Current IF 50 mA Power Dissipation Ptot 120 mW Thermal Resistance (Junction/Air) RthJA 450 K/W Electrostatic Discharge Voltage Capability ESD 2000 V 1 Electrostatic Discharge Voltage Capability ESD 400 V 2 Notes Figure 1 Notes: 1. ESD Capability for all Pins HBM(Human Body Model) according JESD22-A114 2. ESD Capability for all Pins MM (Machine Model) according JESD22-A115 Characteristics (TA = -40C to +85C) unless otherwise specified Parameter Symbol Min Typ* Max Unit Peak Wavelength PEAK 630 650 685 nm 5 Spectral Bandwidth (FWHM) 20 30 nm 5 Switching Times (R_ILED = 100Ohm) T_rise (10%...90%) T_fall (90%.. 10%) T_rise (10%...90%) T_fall (90%.. 10%) tr tf tr tf 14 16 20 24 25 27 ns ns ns ns Capacitance (fmeas = 1MHz; Vf = 0V) CS 52 Forward Voltage (ILED_DC = 50mA) VF VF 2.0 2.6 2.7 V V 2 4 4 Optical Output Power (ILED_DC = 10mA) POPT POPT -6.2 -2.5 -1.5 dBm dBm 2,3,5 3,5 3 3 Coefficient Symbol Value Unit Notes Figure Optical Power Temperature Coefficient TPOPT -0.4 %/K 6,7 Forward Voltage Temperature Coefficient T VF -1.8 mV/K Wavelength Temperature Coefficient T 0.16 nm/K * -10.5 -12.5 Figure 1,2,4 1,2,4 1,4 1,4 pF Typical value = mean value at TA = 25C Notes: 1. Given switching time values can be reduced by suitable driver circuits. Also an increase of LED-Current leads to a reduction of the switching times. 2. Measured at 25C 3. The optical output power coupled into a polymere optical fiber (NA=0.5) is measured with a large area detector at the end of a short fiber (about 1m). 4. Driver circuit for the characterization process: see Figure 2 (Vcc=5.0V; installed R_ILED = 100Ohm) 5. ValuedBm=10*log(Valuemeasured/1mW) 6. Only valid for a used LED-current in the range of 10mA to 50mA (DC-Current). Optical Power Temperature Coefficient for temperatures between -40C and 25C is almost 0%/K. 7. Value for +25C to +85C 3 Maximum Forward Current 40 GND Data In 51 Ohm 20 0 20 40 60 TA - Temperature (C) 80 100 1A Vcc 1A 2B 1Y 2A GND 2Y GND GND Figure 2. Measurement circuit Optical Output Power Forward Voltage 2.5 2 Forward Voltage (V) +2 0 -2 -4 -6 -8 -10 -12 -14 -16 -18 GND SN75451BD SFH757 1k Ohm R thJA = 450 K/W Figure 1. Maximum Forward Current Optical Output Power (dBm) 10 uF 60 0 -40C 25C 85C 0 5 10 15 20 25 30 35 DC-LED Current (mA) 40 45 50 Figure 3. Typical Optical Output Power Relative optical output power (%) R_ILED Vcc 100 uF IF - Forward Current (mA) 80 100 90 80 70 60 50 40 30 20 10 0 600 1.5 1 -40C 25C 85C 0.5 0 0 5 10 650 Wavelength (nm) 20 25 30 35 DC-LED Current (mA) Figure 4. Typical Forward Voltage Spectral Emission (100% = Peak Power) 625 15 675 700 Figure 5. Typical Spectral Emission For product information and a complete list of distributors, please go to our web site: www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries. Data subject to change. Copyright (c) 2005-2011 Avago Technologies. All rights reserved. Obsoletes AV01-0717EN AV02-2597EN - December 1, 2011 40 45 50