spec no: dsa b1977 rev no: v.7 date: mar/20/2005 page: 1 of 3 approved: j. lu checked: allen liu drawn: b.h.li package dimension s km - 4457f3c description f3 made with gallium arsenide infrared emitting diodes. 1.5mm side look infra - red emitting diode features side looking package. mechanically and spectrally matched to the phototransistor. water clear lens. rohs compliant. notes: 1. all dimensions are in millimeters (inches). 2. tolerance is 0 .25(0.01") unless otherwise noted. 3. lead spacing is measured where the leads emerge from the package. 4. specifications are subject to change without notice.
spec no: dsa b1977 rev no: v.7 date: mar/20/2005 page: 2 of 3 approved: j. lu checked: allen liu drawn: b.h.li selection guid e note: 1. 1/2 is the angle from optical centerline where the luminous intensity is 1/2 the optical centerline value. electrical / optical characteristics at t a =25 c absolute maximum ratings at t a =25 c part no. dice lens type po (mw/sr) @ 20ma viewing angle min. typ. 2 ? 1/2 km - 4457f3c gaas water clear 0.8 4 70 parameter p/n symbol typ. max. units test conditions forward voltage f3 v f 1.2 1.6 v i f =20ma reverse current f3 i r - 10 ua v r =5v capacitance f3 c 90 - pf v f =0v;f=1mhz peak spectral wavelength f3 p 940 - nm i f =20ma spectral bandwidth f3 ? 1/2 50 - nm i f =20ma parameter symbol f3 units power dissipation p t 100 mw dc forward current i f 50 ma peak forward current[1] i fs 1.2 a reverse voltage v r 5 v operating temperature t a - 40 to +85 c storage temperature t stg - 40 to +85 c lead solder temperature [2] 260c for 3 seconds lead solder temperature [3] 260c for 5 seconds notes: 1. 1/100 duty cycle, 10us pulse width. 2. 2mm below package base. 3. 5mm below package base.
spec no: dsa b1977 rev no: v.7 date: mar/20/2005 page: 3 of 3 approved: j. lu checked: allen liu drawn: b.h.li km - 4457f3c remarks: if special sorting is required (e.g. binning based on forward voltage or radiant intensity), the typical accuracy of the sorting process is as follows: 1. radiant intensity: +/ - 15% 2. forward voltage: +/ - 0.1v note: accuracy may depend on the sorting parameters.
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