04.10.2011 S8550MG 1 of 5 S8550MG technical data infrared laser diode features ? lasing mode structure: multi mode ? peak wavelength : typ. 850 nm ? optical ouput power: 50 mw ? package: 5.6 mm electrical connection pin configuration bottom view n-type pin function 1 ld cathode 2 ld anode, pd cathode 3 pd anode absolute maximum ratings (t c =25c) item symbol value unit cw output power p o 50 mw ld reverse voltage v rld 2 v operating case temperature t c -10 ? +40 c storage temperature t stg -15 ? +85 c specifications (t c =25c, p o =50mw) item symbol min. typ. max. unit optical specifications center wavelength c 830 850 860 nm U 10 15 20 deg fwhm beam divergence* 22 30 38 deg electrical specifications threshold current i th - 28 35 ma operating current i op - 85 110 ma slope efficiency 0.4 0.75 - mw/ma operating voltage u op 1.5 1.8 2.1 v monitor current i m 0.05 0.12 1.00 ma * U and are defined as the angle within the intensity is 50% of the peak value. the above specifications are for reference purpos e only and subjected to change without prior notice.
04.10.2011 S8550MG 2 of 5 package dimensons 5.6 mm package ( unit:mm ) typical performance curves optical ouput power vs. forward current
04.10.2011 S8550MG 3 of 5 forward voltage vs. forward current peak wavelength vs. case temperature far-field pattern
04.10.2011 S8550MG 4 of 5 monitor current vs. optical output power slope efficiency vs. case temperature threshold current vs. case temerature
04.10.2011 S8550MG 5 of 5 safety of laser light ? laser light can damage the human eyes and skin. do not expose the eye or skin directly to any laser light and/or through optical lens. when handling the lds, wear appropriate safety glasses to prevent laser light, even any reflections from entering to the eye. focused laser beam through optical instruments will increase the chance of eye hazard. ? these lds are emitting invisible light. cautions 1. operating methode ? this ld shall change its forward voltage requirement and optical ouput power according to temperature change. also, the ld will require more operation current to maintain same ouput power as it degrades. in order to maintain output power, use of apc (automatic power control) is recommended. which use monitor feedback to adjust the operation current. ? confirm that electrical spike current generated by swithing on and off does not exceed the maximum operating current level specified her ein above as absolute maximum rating. also, employ appropriat countermeasures to reduce c hattering and/or overshooting in the circuit. 2. static electricity ? static electricity or electrical surges will reduce and degrade the reliability of the lds. it is recommended to use a wrist trap or anti-electrostatic glove when handeling the product. 3. absolute maximum rating ? active layer of lds shall have high current density and generate high electric field during its operation. in order to prevent excessive dam age, the ld must be operated striclty below absolute maximum rating.
|
