f i n i s a r confidential and proprietary ? 2012 finisar corpora tion. all rights reserved rev. a1 page 1 product specification 1.25gbps 850nm vcsel, to-46 HFE4080-321 product features ? designed for drive currents between 5 and 15 ma ? optimized for low dependence of electrical properties over temperature ? high speed >1 ghz the HFE4080-321 is a high-performance 850 nm vcsel (vertical cavity surface-emitting laser) packaged for high-speed data communications. the HFE4080-321 is a high radiance vcsel designed to convert electrical current into optical power that can be used in fiber optic communication s and other applications. as the current varies above threshold, the light intensity increas es proportionally. the HFE4080-321 is designed to be used with inexpen sive silicon or gallium arsenide detectors (see hfd3081-108, hfd3081-103), but excellent perfo rmance can also be achieved with some indium gallium arsenide detectors. the low drive current requirement makes direct driv e from pecl (positive emitter coupled logic) or eml (emitter coupled logic) gates possibl e and eases driver design. the HFE4080-321 is designed to interface with 50/12 5 and 62.5/125 um multimode fiber. it produces circularly symmetric, non-astigmatic, narr ow divergence beams that, with appropriate lensing, fiber couple all of the emitter power. product selection part number description HFE4080-321 unattenuated to-46 component, proton im planted vcsel
HFE4080-321 product specification ? apr 2013 f i n i s a r confidential and proprietary ? 2012 finisar corpora tion. all rights reserved rev. a1 page 2 i. absolute maximum ratings parameter rating storage temperature -40 to +85 c case operating temperature 0-70 deg c lead solder temperature 260 c, 10 sec. laser continuous average current 15ma laser peak forward current with pulse width less than 1 s 20ma laser reverse voltage 5v esd exposure (human body model) 225v 1 1 heel and wrist straps must be used on a properly gr ounded workstation notice 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 thes e or any other conditions above those indicated in the operations section for extended periods of time may affect reliability. notice the inherent design of this component causes it to be sensitive to electrostatic discharge (esd). to prevent esd-indu ced damage and/or degradation to equipment, take normal esd pr ecautions when handling this product
HFE4080-321 product specification ? apr 2013 f i n i s a r confidential and proprietary ? 2012 finisar corpora tion. all rights reserved rev. a1 page 3 ii. electro-optical characteristics (ta=25 oc unles s otherwise stated) notes: 1) reliability is a function of temperature, see www.finisar.com for details. 2) operating power is set by the peak operating curren t i peak =i bias +i modulation . 3) for the purpose of these tests, i f is dc current. 4) threshold current varies as (t a ? t o ) 2 . it may either increase or decrease with temperatu re, depending upon relationship of t a to t o . the magnitude of the change is proportional to th e threshold at t o . 5) slope efficiency is defined as ? p o / ? i f . 6) rise and fall times specifications are the 20% - 80 %. most of the devices will measure <200ps fall time. rise and fall times are sensitive to drive el ectronics. 7) beam divergence is defined as the total included an gle between the 1/e 2 intensity points. vcsel parameters test condition symbol min. typ. max. units notes peak operating current adjustable to establish operating power i peak 12 20 ma 2 optical power output i f =12ma po 0.9 1.8 3.6 mw 2,3 threshold current i th 1.5 3.5 6 ma threshold current temperature variation t a = 0 o c to 70 o c ? i th -1.5 1.5 ma 4 slope efficiency po =1.3mw 0.1 0.25 0.4 mw/ma 5 slope efficiency temperature variation t a = 0 o c to 70 o c ? / ? t -0.5 %/ o c peak wavelength i f =12ma p 830 850 860 nm p temperature variation i f =12ma ? p/ ? t 0.06 nm/ o c spectral bandwidth, rms i f =12ma ? 0.85 nm laser forward voltage i f =12 ma v f 1.6 1.8 2.2 v laser reverse voltage i r =10 a bvr ld 5 10 v rise and fall times prebias above threshold, 20%-80% t r /t f 100 300 ps 6 relative intensity noise 1 ghz bw, i f =12ma rin -128 -122 db/hz series resistance i f =12 ma r s 18 25 40 ohms beam divergence i f =12 ma 5 15 20 degrees 7
HFE4080-321 product specification ? apr 2013 f i n i s a r confidential and proprietary ? 2012 finisar corpora tion. all rights reserved rev. a1 page 4 iii. typical performance curves emitted power vs. current: power varies approximately linearly with current above threshold. threshold current vs. temperature: threshold current varies parabolically with temperature; thus it can be nearly constant for a limited temperature range. t e m p e r a tu r e threshold current t m in , i m in i t h i m in [1 . 1 1 0 - 4 (t -t m in ) 2 + 1 ] iv. environmental specifications parameter symbol min typ max units ref. case operating temperature t op 0 70 c storage temperature t sto -40 85 c v. regulatory compliance feature agency standard certificate number laser eye safety fda/cdrh cdrh 21 cfr 1040 and laser notice 50 95214 87 copies of the referenced certificates are available at finisar corporation upon request. current pmax typical operating current / power i th
HFE4080-321 product specification ? apr 2013 f i n i s a r confidential and proprietary ? 2012 finisar corpora tion. all rights reserved rev. a1 page 5 vi. mechanical specifications (dimensions are in inches) pin description 1 cathode 2 anode 3 cathode 4 case 0.400 min
HFE4080-321 product specification ? apr 2013 f i n i s a r confidential and proprietary ? 2012 finisar corpora tion. all rights reserved rev. a1 page 6 vii. revision history revision date description a1 4/28/2013 ? document created. viii. for more information finisar corporation 1389 moffett park drive sunnyvale, ca 94089-1133 tel. 1-408-548-1000 fax 1-408-541-6138 sales@finisar.com www.finisar.com
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