SFH250 and SFH250v receiver with analog output for polymer optical fber applications data sheet description the SFH250 is a low-cost 650nm receiver for optical data transmission with polymer optical fber. this si- pin-photodiode works fne with the avago transmitter sfh757. according to the intensity of the incident light the SFH250 generates an analog photocurrent. in typical applications the SFH250 is operated in reverse-biasing and is installed in series with a resistor, where the voltage tapping is taken. by increasing the reverse voltage the switching times decrease and the SFH250 can be used for transmission speeds up to 100mbd. components of the sfh series are optimized for easy coupling. no fber stripping is required, only the cut fber has to be inserted into the selected sfh component. SFH250 the transparent plastic package has an aperture where a 2.2mm fber end can be inserted. this very easy coupling method is extremely cost-efective. SFH250v the v-housing allows easy coupling of unconnectorized 2.2mm polymer optical fber by means of an axial locking screw. ordering information features ? fast switching time ? sensitive in visible and near ir range ? high linearity ? 2.2mm aperture holds standard 980/1000/2200 um plastic fber ? no fber stripping required ? molded microlens for efcient coupling plastic direct fiber connector housing (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 application literature 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 SFH250 SFH250v type ordering code SFH250 sp000063866 SFH250v sp000063852
2 package dimensions SFH250 SFH250v dimensions in mm dimensions in mm package v-housing color 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. package v-housing mounting pins 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. package v-housing axial locking screw 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. package v-housing mounting pins package v-housing axial locking screw 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 SFH250 component 9.0 cathode 8.8 4.8 2.54 5.08 7.62
3 technical data absolute maximum ratings 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 30 v power dissipation p tot 100 mw thermal resistance (junction/air) r thja 750 k/w 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 characteristics (t a = -40c to +85c) unless otherwise specifed parameter symbol min typ* max unit notes figure maximum photosensitivity wavelength l smax 850 nm 1 photosensitivity spectral range (s=80%smax) l s 400 1100 nm 1 dark current (r l =50? ,v r =5v, t a =25c) i r 1 10 na 2 5 capacitance (f=1mhz, v r =0) c s 11 pf 5 switching times (r l =50?, v r =5.0v, =650nm) t_rise (10%...90%) t_fall (90%.. 10%) tr tf 5 8 12 16 ns ns 1,2 6, 4 switching times (r l =50?, v r =30.0v,=650nm) t_rise (10%...90%) t_fall (90%.. 10%) tr tf 3 4 10 10 ns ns 1,2 6, 4 photocurrent (rl=50? ,popt=10uw, v r =5.0v, =650nm) i p 2.4 4.4 a 2,3 responsitivity (=650nm, r l =50?) r ip 240 440 a / mw 3 3 photocurrent temperature coefcient (=650nm) t ip -0.03 % / k 2 * typical value = mean value at ta=25c note: 1. measured with optical input power -4dbm(mean) and pattern: 1010 at 5mbd 2. increase with temperature 3. not strictly linear behavior. actual value at high optical input power could vary from the typical value.
0 10 20 30 40 50 60 70 80 90 100 400 500 600 700 800 900 1000 1100 1200 relative spectral sensitivity in % wavelength in nm spectral sensitivity ip / ip25c ta in c 0 2 4 6 8 10 12 0 5 10 15 20 25 30 capacitance in pf reverse voltage in v capacitance SFH250 r l i p + ? reverse voltage v r 0 2 4 6 8 10 12 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 tr and tf in ns ta in c switching times (measured with rl=50) tr at vr=5v tr at vr=20v tr at vr=30v tf at vr=5v tf at vr=20v tf at vr=30v 0.9 0.95 1 1.05 1.1 - 50 - 40 - 30 - 20 - 10 0 10 20 30 40 50 60 70 80 90 ip/ ip 25c (measured with rl=50, popt=10w) 650nm 0 10 20 30 40 50 60 70 80 90 100 110 0.00e+00 5.00e-05 1.00e-04 1.50e-04 2.00e-04 2.50e-04 photocurrent (measued with rl=50) ip in a optical input power in w - 4 0 c 2 5 c 8 5 c figure 1. typical spectral sensitivity figure 2. typical photocurrent depending on temperature figure 3. typical photocurrent at constant light on figure 4 .test circuit figure 5. typical capacitance; measured at ta=25c with fmeasured =1mhz figure 6. typical switching times; measured with pattern 1010 (5mbd) at -4dbm (mean) optical input power 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 av01-0711en av02-3095en - october 25, 2011
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