Nichia NWSU333B-U385 - UV 385 nm LED

Nichia NWSU333B-U385 (Nichia NWSU333BT-U385 - on tape) - high-power ultraviolet SMD LED (chip type 6868, size 6.8 x 6.8 x 1.9 mm) - UV LEDs. Successor of Nichia NCSU034B, Nichia NC4U134A and Nichia NC4U134B, but with 1 chip and higher radiant power.

Specifications (initial electrical / optical characteristics):

peak wavelength: min. 380 nm, typ. 385 nm, max. 390 nm (Rank U385),
spectrum half width (FWHM) 11 nm,
viewing angle 120 degrees (±60°),
total radiant flux - radiant power typ. 5500 mW @ 3500 mA,
forward voltage typ. 3.7 V.

Absolute maximum ratings:

Forward current IF = DC 4500 mA;
Pulse forward current IFP = 6000 mA (pulse width ≤10 ms, duty cycle ≤10%);
Allowable reverse current IR = 85 mA;
Power dissipation PD = 19.6 W;
Operating temperature Topr = -10...+85°C;
Storage temperature Tstg = -40...+100°C;
Junction temperature TJ = 100°C.

Features:

● Pb-free Reflow Soldering Application;
● Built-in ESD Protection Device;
● RoHS Compliant.

Applications:

• UV illumination for UV cameras;
• Scientific instrumentation;
• Sensor technology;
• R&D;
• Fluorescence spectroscopy;
• UV tracing;
• UV curing of epoxy resin and ink;
• Fluorescence contrast in machine vision;
• Fiber coupled LED sources;
• Excitation source for luminescence;
• Lithography.

Safety Advices. Caution!

Semiconductor product. Invisible radiation. Depending on the mode of operation (drive current, pulse duration, optics etc.), these devices emit highly concentrated non visible ultraviolet light which can be hazardous to the human eye. Products which incorporate these devices have to follow the safety precautions given in IEC 60825-1 and IEC 62471. Depends on operating conditions, this LED may be classified as class 1M laser/LED product (acc. to IEC 60825). When operating powerful emitters, care should be taken to comply with IEC to minimize any possible eye hazard:

- Use lowest possible drive level.
- Use diffusing optics where posiible.
- Avoid staring into powerful emitters or connected fibers.
- Do not view directly in beam with optical instruments.

data sheet Nichia NWSU333B PDF

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