sfh757fandfsfh757v transmitter for polymer optical fiber applications datafsheet description the sfh757 is a low-cost transmitter diode for optical data transmission with polymer optical fber. 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. the sfh series is optimized for easy coupling. no fber stripping is required; just insert the cut fber into the selected sfh component. sfh757 the transparent plastic package has an aperture where a 2.2 mm fber end can be inserted. this very easy coupling method is extremely cost-efective. sfh757vf the v-housing allows easy coupling of unconnectorized 2.2 mm polymer optical fber with an axial locking screw. orderingfinformation features ? high speed transmitter for up to 100mbd applications (with peaking circuits) ? 2.2mm aperture holds standard 980/1000/2200m plastic fbers ? no fber stripping required ? molded microlens for efcient coupling plasticfdirectffiberfconnectorfhousing f (v-housing) ? locking screw attached to the connector ? interference-free transmission by the light-tight housing ? transmitter and receiver can be positioned fexibly ? no cross talk ? auto insertable and wave solderable ? supplied in tubes applications ? household electronics ? power electronics ? optical networks ? light barriers applicationfliterature anf# 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 sfh757 sfh757v type orderingfcode sfh757 sp000063871 sfh757v sp000063858
2 packagefdimensions f sfh757 sfh757v dimensionsfinfmm dimensionsfinfmm packagefv-housingfcolor sfh v-series components are color coded just like other avago fber optic components. the sfh757v transmitter has a white colored housing; the sfh250v and sfh551/1- 1v receiver components have a black colored housing. this prevents mistakes while making connections. product designation and date of manufacture are printed on the housing. packagefv-housingfmountingfpins sfh v-series components have two pins that are electri - cally 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 fxing the fber 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. packagefv-housingfaxialflockingfscrew components of the sfh v-series are equipped with an axial locking screw for easy coupling to the unconnec - torized 2.2 mm polymer optical fber. the force that is necessary to pull a jammed fber 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 fber and torque combination. packagefv-housingfmountingfpins packagefv-housingfaxialflockingfscrew surface not at 28 a 0.5 view from a 1.5 0.5 5.3 0.6 ? 2.275 8.6 7.65 4.6 ? 4.625 2.54 cathode locking screw 24.0 13.5 3.5 spacing 0.5 ? 0.6 sfh757 component 9.0 cathode 8.8 4.8 2.54 5.08 7.62
3 technicalfdata absolutefmaximumfratings parameter symbol min typ max unit notes figure operating temperature range t c -40 +85 c storage temperature range t stg -40 +100 c junction temperature t j +100 c soldering temperature (2mm from case bottom, t5s) t s +260 c reverse voltage v r 3 v forward current i f 50 ma power dissipation p tot 120 mw thermal resistance (junction/air) r thja 450 k/w 1 electrostatic discharge voltage capability esd 2000 v 1 electrostatic discharge voltage capability esd 400 v 2 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 characteristicsf(t a f=f-40cftof+85c)funlessfotherwisefspecifed parameter symbol min typ* max unit notes figure 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 1,2,4 1,2,4 1,4 1,4 capacitance (fmeas = 1mhz; vf = 0v) c s 52 pf forward voltage (i led_dc = 50ma) v f v f 2.0 2.6 2.7 v v 2 4 4 optical output power (i led_dc = 10ma) p opt p opt -10.5 -12.5 -6.2 -2.5 -1.5 dbm dbm 2,3,5 3,5 3 3 coefcient symbol value unit notes figure optical power temperature coefcient t popt -0.4 %/k 6,7 forward voltage temperature coefcient t vf -1.8 mv/k wavelength temperature coefcient t 0.16 nm/k * 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 fber (na=0.5) is measured with a large area detector at the end of a short fber (about 1m). 4. driver circuit for the characterization process: see figure 2 (vcc=5.0v; installed r_iled = 100ohm) 5. value dbm =10*log(value measured /1mw) 6. only valid for a used led-current in the range of 10ma to 50ma (dc-current). optical power temperature coefcient for temperatures between -40c and 25c is almost 0%/k. 7. value for +25c to +85c
20 40 60 100 0 80 0 20 40 60 80 a t - forward current (ma) f i - temperature (c) 0 10 20 30 40 50 60 70 80 90 100 relative optical output power (%) wavelength (nm) spectral emission (100% = peak power) 625 675 650 600 700 0 0.5 1 1.5 2 2.5 forward voltage (v) dc-led current (ma) -18 -16 -14 -12 -10 -8 -6 -4 -2 0 +2 optical output power (dbm) dc-led current (ma) 0 5 10 15 20 25 30 35 40 45 50 0 5 10 15 20 25 30 35 40 45 50 thja r = 450 k/w -40c 25c 85c -40c 25c 85c maximum forward current optical output power forward voltage figuref1.fmaximumfforwardfcurrent figuref2.fmeasurementfcircuit figuref3.ftypicalfopticalfoutputfpower figuref4.ftypicalfforwardfvoltage figuref5.ftypicalfspectralfemission sfh757 sn75451bd gnd gnd gnd vcc 1a 1a 1y gnd vcc 2b 2a 2y r_iled 51 ohm 1k ohm 100 uf 10 uf data in gnd 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 ? 2005-2011 avago technologies. all rights reserved. obsoletes av01-0717en av02-2597en - december 1, 2011
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