hfe4020-313/xxx fiber optic led description features power out designed for drive currents between 10 and 100 ma wave solderable optimized for linear optical output with drive currents between 10 ma and 100 ma high speed: 85 mhz mounting options sma single hole st single hole sma pcb st pcb sma 4 hole the hfe4020-313/xxx is a high radiance gaalas 850 nanometer led optimized for coupling into small fiber core diameters at a forward current of 10 to 100 ma. the patented "caprock"? led chip combines high power coupling with wide bandwidth. the peak wavelength is matched for use with honeywell silicon fiber optic detectors and receivers. when the hfe4020-313/xxx is used at elevated temperatures, thermal resistance must be taken into consideration. application the hfe4020-313/xxx is a high radiance led packaged in a fiber optic connector that aligns the optical axis of the base component to the axis of the optical fiber. data rates can vary from dc to above 85 mhz depending upon component application. the led converts electrical current into optical power that can be used in fiber optic communications. as the current varies (typically from 10 to 100 ma), the light intensity increases proportionally. the hfe4020-313/xxx led is designed to give high fiber coupled power (high radiance into a standard fiber optic cable). in order to enhance the light being sent into a fiber optic cable, a 0.30 mm diameter glass microlens is placed over the "caprock"? junction. the microlens collimates the light, increasing the intensity directed toward a fiber optic cable. this creates a "sweet spot" of power, allowing greater power to be launched into standard fiber optic cables. honeywell reserves the right to make changes in order to improve design and supply the best products possible. h 217
hfe4020-313/xxx fiber optic led test conditions typ electro-optical characteristics (-40?c < t < 100?c unless otherwise stated) units min parameter symbol max i? = 50 ma, 100/140 micron, fiber coupled power pt w 30 60 0.29 na fiber, t = 25?c [] dbm -15.2 -12.2 i? = 100 ma forward voltage v? v 1.70 2.00 i? = 10 a reverse voltage b? v 1.0 5.0 i? = 100 ma dc peak wavelength ?? nm 850 i? = 100 ma dc spectral bandwidth ? nm 50 1 v prebias, 100 ma peak response time ns t = 25?c, 10-90% t? 6 8 t = 25?c, 90-10% t? 8 10 -40 < t < +100?c, 10-90% t? 6 9 -40 < t < +100?c, 90-10% t? 8 11 i? = 100 ma dc, small analog bandwidth bwe mhz 85 signal sinusoidal modulation i? = 100 ma pt temperature coefficient pt/t db/?c -0.019 dc series resistance r? 4.0 v? = 0 v, f = 1 mhz capacitance c pf 70 heat sinked thermal resistance ?c/w 250 notes 1. hfe4020-313/xxx is tested using a 100/140 micron fiber cable. actual coupled power values may vary due to mechanical alignment procedures and/or receptacle and fiber tolerances. absolute maximum ratings (25?c free-air temperature unless otherwise noted) -40 to +100?c storage temperature -40 to +100?c case operating temperature 260?c, 10 s lead solder temperature 100 ma continuous forward current (heat sinked) 1 v @ 10 a reverse voltage 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. typical coupled power (w/dbm) @ i?=50 ma @ i?=50 ma fiber interface honeywell leds are designed to interface with multimode fiber with sizes ranging from 50/125 to 200/230 microns. honeywell performs final tests using 50/125 micron core fiber. all multimode fiber optic cables between 50/125 and 200/230 should operate with similar excellent performance. see table for typical powers. -313 n.a. index dia. 10/-19.9 0.20 graded 50/125 19/-17.1 0.28 graded 62.5/125 60/-12.2 0.29 graded 100/140 honeywell reserves the right to make changes in order to improve design and supply the best products possible. 218 h
hfe4020-313/xxx fiber optic led typical optical power output vs forward current fig. 1 fiber001.gra typical spectral output vs wavelength fig. 2 fiber103.gra typical optical power output vs case temperature fig. 3 fiber020.gra all performance curves show typical values description catalog listing order guide standard screening, typical power out 60 w hfe4020-313/xxx mounting options substitute xxx with one of the following 3 letter combinations sma single hole st single hole sma pcb st pcb sma 4 hole - aaa - baa - aba - bba - ada dimensions on page 203 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. warning 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. h 219
hfe4020-313/xxx fiber optic led honeywell reserves the right to make changes in order to improve design and supply the best products possible. 220 h
european connectorized leds/transmitters honeywell led/transmitter components are available in the following connector styles. each style has a three-digit reference used in the order guides. sma single hole mounting (ref.: aaa) st single hole mounting (ref.: baa) sma pcb mounting (ref.: aba) 203 honeywell optoelectronics reserves the right to make changes at any time in order to improve design and supply the best products possible.
eur opean connectoriz ed leds/t ransmitter s st pcb mounting (ref .: bb a) sma 4 hole mounting (ref .: ad a) 204 honeywell optoelectronics reserves the right to make changes at any time in order to improve design and supply the best products possible.
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