-1- [ utz-sc0338_2 ] 2013/01/09 violet laser diode ? ndv4316 ? ? features ? optical output power: cw120mw ? peak wavelength: 405nm ? can type: ? 5.6 floating mounted with photo diode and zener diode outline dimension unit (mm) ( ) are reference figure ? absolute maximum ratings ? ? item ? symbol ? optical output power (tc=25 ? c) po 140 mw allowable reverse current ir (ld) 85 ma pd reverse voltage vr (pd) 5 v storage temperature tstg -40 ~ 85 ? c operating case temperature tc -10 ~ 70 ? c ? initial electrical/optical characteristics (tc=25 ? c) item condition symbol min typ. max unit optical output power cw po - - 120 mw peak wavelength po=120mw ? p 400 405 410 nm threshold current cw ith - 35 50 ma operating current po=120mw iop - 120 150 ma pin connection slope efficiency cw ? 1.2 1.4 1.9 w/a this model has a zener diode built in as a protection circuit against static electricity. operating voltage po=120mw vop - 4.8 5.5 v beam divergence* parallel po=120mw ? // 7.0 9.0 12.0 ? perpendicular ?? 15.0 19.5 23.0 ? beam pointing accuracy parallel po=120mw ?? // -2.0 - 2.0 ? perpendicular ???? -2.5 - 2.5 ?? monitor current** po=120mw im ? 0.1 0.3 0.5 ma ? * full angle at 50% from peak intensity ** monitor current is short time power reference purpose only. not guaranteed for accuracy. all figures in this specification are measured by ni chia's method and may cont ain measurement deviations. the above specifications are for reference purpose only and subjected to change without prior notice. safety of laser light ? laser light can damage the human eyes and skin. do not expose the eye or skin to any laser light directly and/or through optical le ns. when handling the lds, wear appropriate safety glasses to prevent laser light, even a ny reflections from entering to the eye. focused laser beam through optical instruments will increase the chance of eye hazard. ? these lds are classified in class 4 of iec60825-1 and 21 cfr part 1040.10 safety standards . it is absolutely necessary to take overall safety measures against user's modules, equipment and systems into which nichia lds are incorporated and/or integrated. nichia corporation http://www.nichia.co.jp ? ? headquarters 491 oka, kaminaka-cho, anan-shi, tokushima 774-8601, japan phone: +81-884-22-2311 fax: +81-884-21-0148 ? contact tokyo sales office 13f tamachi center building 34-7, shiba 5-chome, minato-ku, tokyo 108-0014, japan phone: +81-3-3456-3108 fax: +81-3-5440-7330 ? x+ (0.4) (90 ) 0.40.1 5 . 6 + 0 - 0 . 0 3 12 3 y+ 2.00.2 3.550.1 4 0.430.08 1.20.1 0.250.03 glass thickness 6.51.0 4.20.2 1.00.1 emitting point z+ (1.3) emitting point reference plane 2.30.2 ( 1 . 6 ) 4
-2- [ utz-sc0338_2 ] 2013/01/09 ? ? typical characteristics ? ?
-3- [ utz-sc0338_2 ] 2013/01/09 ? ? cautions (1) operating method ? the ld shall change its forward voltage requirement and opti cal output power according to temperature change. also, the ld will require more operation current to ma intain same output 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 the optical output power generated by spike current when switching on and off does not exceed the maximum absolute rating. also, employ appropriate countermeasures to reduce chattering 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 strap or anti-electrostatic glove when handling 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 damage, the ld must be operated strictly below absolute max rating. (4) others ? nichia lds described in this brochure are intended to be used for ordinary electronic equipment (such as office equipment, communications equipment, measurement instruments and household appliances). consult nichia?s sales staff in advance for information on the applications in which exceptional quality and reliability are required, particularly when the failure or malfunction of the lds may directly jeopar dize life or health (such as for airpla nes, aerospace, subm ersible repeaters, nuclear reactor control systems, autom obiles, traffic control equipment, lif e support systems and safety devices). ? the purchaser must acknowledge that any ld can be failed statically and must design its equipments fail safe design. prior to use of the ld, please confirm that the ld, as described in nichia?s specifications, meets the life expectancy needs of, and provides the features required by the circuit and any related modules, equipment and/or systems. ? nichia prohibit purchaser from reverse engineering, disassembling, or taking any other steps to derive the structure or design of the ld. ? the appearance and specifications of th e product may be modified for impr ovement without notice. the formal specifications must be exchanged and signed by both parties before large volume purchase begins. ? no unauthorized transmission or reproduction of this document, either in whole or in part, is permitted.
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