hfe4224 next generation high power leds, metal st package outline dimensions in inches (mm) description features industry standard st fiber connector 850 nm gaaias led fiber dip package style high reliability construction straight metal barrel and housing wave solderable metal package provides enhanced durability and heat dissipation over plastic packages next generation leds are designed for use in ieee 802.3 ethernet and ieee 802.5j token ring applications such as repeaters, bridges, hubs, routers, switches and gateways. the devices are gaaias 850 nm leds which are designed to efficiently couple optical power into different fiber sizes ranging from 50/125 micron to 200/240 micron. they typically couple -12.0 dbm into 62.5/125 micron cable at 60 ma peak. the led component is eletrically isolated from the connector barrel. the mechanical construction uses a high reliability st fiber-dip fiber optic connector/housing designed to be easily mounted on printed circuit boards without the need for additional hardware. this component is specifically designed to provide performance and flexibility to the designer and should be driven with a 50% duty cycle at 60 ma to 100 ma peak forward current for the electrical input signal. next generation leds have been updated and improved over existing fiber optic leds. the next generation leds provide an improved lensing scheme which makes the fiber optic coupling more repeatable. the leds are manufactured with an automated process that eliminates variable introduced by a manual process. the next generation leds are pin for pin compatible with existing fiber dip leds. fiber309.dim fiber302.tif pinout 1. common* 2. anode 3. cathode 4. common* 5. common* 6. anode 7. anode 8. common* pins 1, 4, 5 and 8 are common and connected to the metal housing st is a registered trademark of at & t. honeywell reserves the right to make changes in order to improve design and supply the best products possible. 92 h
hfe4224 next generation high power leds, metal st package test conditions typ electro-optical characteristics (t = -40 to +85?c unless otherwise specified) units min parameter symbol max [] i?=100 ma peak 50/125 m fiber cou p led power [] pt dbm ( hfe4224-x22 ) fiber , na = 0.20 peak , t=25?c -17.3 -13.8 -11.4 peak over tem p . -18.9 -10.8 i? = 60 ma peak 50/125 m fiber cou p led power pt dbm fiber , na = 0.20 peak , t=25?c -18.8 -15.8 -13.8 peak over tem p . -19.8 -12.8 i? = 100 ma peak 62.5/125 m fiber cou p led power pt dbm fiber , na = 0.275 peak , t=25?c -13.5 -10.0 -7.6 peak over tem p . -15.1 -7.0 i? = 60 ma peak 62.5/125 m fiber cou p led power pt dbm fiber , na = 0.275 peak , t=25?c -15.0 -12.0 -10.0 peak over tem p . -16.0 -9.0 i? = 60 ma peak 62.5/125 m fiber cou p led power pt dbm ( hfe4224-x23 ) fiber , na = 0.275 peak , t=25?c -15.0 -10.5 -9.0 peak over tem p . -16.0 -8.0 i? = 100 ma forward volta g ev? v 1.84 i? = 60 ma v? v 1.48 1.70 2.09 i? = 100 ma forward volta g e tem p erature v?/t mv/?c -0.18 i? = 60 ma coefficient v?/t mv/?c -0.22 i? = 10 a , t=25?c reverse volta g e b? v 1.8 3.8 i? = 100 ma dc peak wavelen g th ?? nm 810 856 895 i? = 60 ma dc ?? nm 810 850 885 i? = 100 ma dc s p ectral bandwidth ( fwhm ) nm 55 i? = 60 ma dc nm 50 i? = 60 ma p eak , no prebias res p onse time t?/t? ns 4.0 6.3 i? = 100 ma pt tem p erature coefficient pt/t db/?c -0.017 i? = 60 ma pt/t db/?c -0.006 dc series resistance r? 4.0 v? = 0 v , f = 1 mhz device ca p acitance c p f 40 heat sinked thermal resistance ?c/w 260 notes 1. typical specifications are for operations at t= 25?c. 2. pt is measured using a 10 meter mode stripped cable which is intended to accurately represent a working system. absolute maximum ratings -55 to +85?c storage temperature -40 to +85?c case operating temperature 269?c, 10 s lead solder temperature 1.8 v reverse voltage 100 ma continuous forward current (heat sinked) stresses greater than those listed under "absolute maximum ratings" may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods of time may affect reliability. honeywell reserves the right to make changes in order to improve design and supply the best products possible. h 93
hfe4224 next generation high power leds, metal st package typical optical power output vs forward current fig. 1 fiber021.gra typical spectral output vs wavelength fig. 2 fiber105.gra typical optical power output vs case temperature fig. 3 fiber025.gra all performance curves show typical values description catalog listing order guide straight metal barrel and housing, standard power HFE4224-022 straight metal barrel and housing, crimped leads, standard power hfe4224-422 straight metal barrel and housing, extended power hfe4224-023 straight metal barrel and housing, crimped leads, extended power hfe4224-423 under certain application conditions, the infrared optical output of this device may exceed class 1 eye safety limits, as defined by iec 825-1 (1993-11). do not use magnification (such as a microscope or other focusing equipment) when viewing the device's output. warnin g the inherent design of this component causes it to be sensitive to electrostatic discharge (esd). to prevent esd-induced damage and/or degradation to equipment, take normal esd precautions when handling this product. caution honeywell reserves the right to make changes in order to improve design and supply the best products possible. 94 h
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