TMC-4F20 vcsel to-46 metal can for gener al pur pose features: ? industry standard to-46 package with flat window glass. ? low dependence of power output over temperature. ? symmetrical beam. ? cost-effective laser light source. electro-optical characteristics: parameters symbol min typ max unit test conditions (1) threshold current i th 5 10 ma output power p o 1 2 4 mw i f =15 ma (2) operating current i op 1 2 ma adjustable to establish 1 .5 mw output power slope efficiency h 0 .20 mw/ma i f =15 ma (3) wavelength l p 8 2 0 850 8 7 0 nm i f =15 ma forward voltage v f 2 2.2 2.5 v i f =15 ma breakdown voltage v bd 1 0 15 v i r =10 m a series resistance r s 4 0 w i f =15 ma beam divergence q 8 degree i f =15 ma (4) notes: 1. all parameters except mentioned are measured at i f =15 ma, 25 c, cw. 2. higher power can be provided under request. 3. slope efficiency is defined as d p/(15-i th ) at 25 c. 4. beam divergence is defined as the angle of light intensity at full width at half maximum (fwhm). thermal characteristics: parameters symbol min typ max unit test conditions thermal resistance r th 9 0 0 c /w t a =25 c i th temperature variation d i th -1.5 1.5 ma t a =0~70 c v f temperature coefficient d v f / d t -3.0 mv/ c t a =0~70 c, i f =15 ma b temperature coefficient dh / d t -0.20 %/ c t a =0~70 c, i f =15 ma f p temperature coefficient dl p / d t 0 .06 nm/ c t a =0~70 c, i f =15 ma absolute maximum ratings: parameters min max unit conditions storage temperature -40 125 j operating temperature -20 85 j lead solder temperature 2 6 0 j 5 seconds continuous forward current 4 0 ma continuous reverse voltage 10 v
TMC-4F20 fig. 1 typical optical characteristics fig. 2 typical electrical characteristics fig. 3 spectrum when driving current 15 ma fig. 4 temperature dependence of threshold current 3 transverse modes typically. outline dimensions: ? unit: mm warning: the vcsel is a class iiib laser in the safety standard ansi z136.1 and should be treated as a potential eye hazard. 0 5 10 15 20 0 1 2 3 4 typical voltage vs current volt age (v) current (ma) 0 5 10 15 20 0 1 2 3 4 i th typical output power vs current out put po wer (m w) current (ma) -40 -20 0 20 40 60 80 100 0 1 2 3 4 5 6 7 8 9 10 typical threshold current vs ambient temperature threshold cu rrent (m a) ambient temperature ( o c)
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