12.07.2013 rlt 980- 300gs 1 of 3 rlt 980 - 3 0 0g s technical data infrared laser diode specifications ? peak wavelength: 980 nm ? optical output power: 300 m w , cw ? package: 9 mm, flat window ? monitor pd: build - in electrical connection m - type pin configuration bottom view m - type pin function 1 ld anode 2 ld cathode , pd anode (case) 3 pd cathode electro - optical characteristics specified at 25c item symbol min. typ. max. unit optical specifications central wavelength c 975 980 985 nm spectral width (fwhm) ? - 0 .5 2.0 nm optical output power p o - 30 0 - m w beam divergence U - 8 10 deg. - 30 50 deg. emitting aperture w x h 5 x 1 m mode structure sm electrical specifications forward current i f - 370 420 ma th reshold current i th - 30 50 ma forward voltage v f - 1. 8 2. 0 v slope efficiency 0.8 0. 9 - mw/ma monitor current i m ma absolute maximum ratings lifetime 10000 hour operating case temperature t c - 20 25 +50 c storage temperature t stg - 40 - +80 c soldering temperature * t s ol - - 250 c * must be completed within 3 seconds note: the above specifications are for reference purpose only and subjected to change without prior notice.
12.07.2013 rlt 980- 300gs 2 of 3 package dimensions 9 mm package unit: mm
12.07.2013 rlt 980- 300gs 3 of 3 precaution fo r use 1. cautions ? this l d must be cooled! ? do not look directly into the emitting area of the l d during operation! ? warning: l d is emitting invisible light! 2. safety of laser light ? laser light can damage the human eyes and skin. do not expose the eye or sk in 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 chanc e of eye hazard. 3. soldering conditions ? do not apply any stress to the lead particularly when heat. ? after soldering the l ds should be protected from mechanical shock or vibration until the l ds return to room temperature. ? when it is necessary to clamp the l d s to prevent soldering failure, it is important to minimize the mechanical stress on the l ds. 4. static electricity ? the l ds are very sensitive to static electricity and surge voltage , which will reduce and degrade the reliability of the lds . it is recommend ed that a wrist band and/or an anti - electrostatic gl ove be used when handling the l ds. ? all devices, equipment and machinery must be grounded properly. it is recommended that precautions should be taken against surge voltage to the equipment that mounts the l ds. 5. operating method ? this ld shall change its forward voltage requirement and optical output power according to temperature change. also, the ld will require more operation current to maintain same output power as it degrades. in order to maintain outpu t power, apc (automatic power control) is recommended, w hich use monitor feedback to adjust the operation current. ? confirm that electrical spike current generated by switching on and off does not exceed the maximum operating current level specified herein above as absolute maximum rating. also, employ appropriate countermeasures to reduce chattering and/or overshooting in the circuit. 6. heat generation ? thermal design of the end product is of paramount importance. please consid er the heat generation of the l d when making the system design. the coefficient of temperature increase per input electric power is affected by the thermal resistance of the ci rcuit board and density of l d placement on the board, as well as other components. it is necessary to avoid inte nse heat generation and operate within the maximum ratings given in the specification. ? the operating current should be decided after considering the a mbient maximum temperature of l ds. 7. absolute maximum rating ? active layer of lds shall have high current de nsity and generate high electric field during its operation. in order to prevent excessive damage, the ld must be operated strictly below absolute maximum rating.
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