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Nichia NDVA111T Datasheet
• For External Cavity Laser with Low Reflection Coating on front facet
• Optical Output Power: 45mW
• Can Type:
5.6 mm Cathode Ground
Absolute Maximum Ratings
Optical Output Power Po 65
LD Forward Current If 120 mA
LD Reverse Voltage Vr
Storage Temperature Tstg -25 ~ 75
Operating Case Temperature Tc 10 ~ 55
Initial Electrical/Optical Characteristics
Item Condition SymbolMinTyp.MaxUnit
Optical Output Power CW Po – – 45 mW
Peak Wavelength Po=45mW
400 – 410 nm
Threshold Current CW Ith – 50 – mA
Operating Current Po=45mW Iop – 72 – mA
Slope Efficiency CW
– 1.8 – W/A
Operating Voltage Po=45mW Vop – 4.3 – V
7 – 12
15 – 23
-2.0 – 2.0
-2.5 – 2.5
*1 Full angle at 50% from peak intensity
All figures in this specification are measured by Nichia’s method and may contain measurement deviations.
Diffractive feedback efficiency to the Laser diode must be limited less than 20% under the External cavity configuration.
This model is Test Sample for evaluation or design purpose only. Life time is not guaranteed.
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
. 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.
491 Oka, Kaminaka-Cho, Anan-Shi, TOKUSHIMA 774-8601, JAPAN
PHONE: +81-884-22-2311 FAX: +81-884-21-0148
TOKYO SALES OFFICE
13F Tamachi Center Building 34-7, Shiba 5-Chome, Minato-Ku, TOKYO 108-0014, JAPAN
PHONE: +81-3-3456-3746 FAX: +81-3-5440-7516
( ) are reference figures
1. LD Anode
3. LD Cathode
This model does not have Photo Diode.
Typical Initial Electrical/Optical Characteristics
Optical Output Power vs. Forward Current
Forward Current If [mA]
Optical Output Power Po [mW]
Slope Efficiency SE [-]
Forward Voltage vs. Forward Current
Forward Current If [mA]
Forward Voltage Vf [V
Far Field Pattern
Optical Intensity [-]
Optical Intensity [dB]
(1) Operating method
The 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.
The use of heat sink is strongly recommended to reduce increases in temperature.
Confirm that the optical output power generated by spike current when switching on and off does not exceed the
maximum absolute max rating. Also, employ appropriate countermeasures to reduce chattering and/or overshooting
in the Circuit.
(2) Design Consideration
LDs may fail as either a short circuit or an open circuit. If an LD shorts during operation, the forward voltage of the LD
may fluctuate greatly. When designing a circuit, ensure that both short and open circuits are considered and that there
will be no issues if a short or open circuit occurs.
(3) 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.
(4) 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.
During operation, if the forward current and/or optical output power are increased the lifetime of the LDs will decrease.
Ensure that the LDs are operated within the recommended conditions.
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 jeopardize life or health (such as for airplanes,
aerospace, submersible repeaters, nuclear reactor control systems, automobiles, traffic control equipment, life support
systems and safety devices).
The Purchaser must acknowledge that any LD can statistically fail and must design its equipments in a 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 prohibits Purchaser from reverse engineering, disassembling, or taking any other steps to derive the structure or
design of the LD.
The appearance and specifications of the product may be modified for improvement 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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