-1- [ utz-sc0345_0 ] 2012/12/05 violet laser diode ? ndv7375 ? ? features outline dimension ? optical output power: 1200mw ? multi transverse mode ? can type: ? 9.0 mm floating mounted with zener diode unit (mm) 1 0.1 2.54 0.2 12 + 0 - 0. 0 3 reference plane emitting point 2-0.45 0.05 emitting point x+ y+ z+ (0.65) 90? 6.65 0.1 7.3 0.2 () are reference fi g ures ? ? absolute maximum ratings ? ? item ? symbol ? optical output power (tc=25 ? c) po 1400 mw allowable reverse current (tc=25 ? c) ir (ld) 85 ma storage temperature tstg -40 ~ 85 ? c operating case temperature tc *0 ~ 30 ? c * operating temperature is recommended within 20 ~ 30 ? c range. ? initial electrical/optical characteristics (tc=25 ? c) item condition symbol min typ. max unit optical output power cw po - - 1200 mw peak wavelength po=1200mw ? p 400 - 405 nm threshold current cw ith 150 280 400 ma pin connection operating current po=1200mw iop 800 1100 1400 ma this model does not have photo diode. this model has a zener diode built in as a protection circuit against static electricity. slope efficiency cw ? 1.0 1.6 2.0 w/a operating voltage po=1200mw vop 3.8 4.1 4.6 v beam divergence * parallel po=1200mw ? // 16 22 28 perpendicular po=1200mw ?? 35 40 50 beam pointing accuracy perpendicular po=1200mw ??? -5 - 5 * full angle at 1/e 2 from peak intensity all figures in this specification are measured by nich ia's method and may contain 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 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 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 ?
-2- [ utz-sc0345_0 ] 2012/12/05 optical output powe r vs . forward curre nt 0 200 400 600 800 1000 1200 1400 0 200 400 600 800 1000 1200 forward curre nt [ma] optical output power [mw] tc=20oc tc=25oc tc=30oc 250 260 270 280 290 300 15 20 25 30 35 case temperature [ o c] threshold current [ma] 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 0 200 400 600 800 1000 1200 forward curre nt [ma] forward voltage [v] tc=20oc tc=25oc tc=30oc 402 403 404 405 406 15 20 25 30 35 case temperature [ o c] peak wavelength [nm] -40 -30 -20 -10 0 10 20 30 40 angle [] relative optical intensity // 398 400 402 404 406 408 wavelength [nm] relative optical intensity ? typical characteristics ? forward voltage vs. forward current threshold current vs. case temperature peak wavelength vs. case temperature far fie ld patte rn typical spe ctrum
-3- [ utz-sc0345_0 ] 2012/12/05 ? 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 maintain 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 switchi ng 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. ? due to its short wavelength and high optical output power, optical depositions on optical path may occur depending on surrounding conditions. appropriate design or countermeasures should be used to avoid optical depositions. ? 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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