Tokushima, Japan – 29 January 2025: Nichia, the world's largest LED manufacturer and inventor of the high-brightness blue and white LED, started mass production of a new deep UV LED (Part No. NCSU434D) in December 2024, with a peak wavelength of 280nm.

The NCSU434D has achieved the industry's highest wall-plug efficiency of 7.4% (input current: 350mA, radiant flux: 135mW) as a deep UV LED (Based on Nichia’s survey). This wall-plug efficiency is based on Nichia’s performance improvement roadmap, showing steady progress with 3.1% in 2021, 5.4% in 2022, and now 7.4%1 with the NCSU434D, realizing almost 2.5x the efficiency in three years. This allows for a higher output of UV radiation at the same input power, or similar output of UV at reduced input power, significantly contributing to energy savings.

Furthermore, by optimizing the method of UV radiation while leveraging the advantages of LEDs, including compact size and radiation distribution characteristics, it can enhance the efficiency of UV utilization. This progress enables the replacement of conventional mercury lamps, which are common UV radiation sources, in applications such as water and air disinfection and paint curing, thereby contributing to the realization of a mercury-free society.

Additionally, the NCSU434D has increased the maximum forward current of the conventional 434 Series from 500mA to 700mA, resulting in a maximum output per package increase from 191mW (at 500mA) to 263mW (at 700mA). Due to these increases, it can now be used in applications where particularly high-output deep UV is required.

Product Specifications:

Size (L × W × H): 3.5mm × 3.5mm × 1.72mm

Sorting Current: 350mA

Maximum Forward Current: 700mA

Peak Wavelength: Typ. 280nm

Radiant Flux: Typ. 135mW

Forward Voltage: Typ. 5.2V

Directivity: Typ. 110°

Product Image:

Product samples of discrete LEDs or LEDs mounted on boards to expedite design efforts can be discussed with Nichia representatives directly and through the Contact Form.

Nichia promises to continue developing UV LEDs with improved performance to help solve various social issues including the realization of a mercury-free society and carbon neutrality.

For more information about products, refer to Nichia's website.

UV LEDs

NCSU434D

TrendForce 2024 Deep UV LED Market Trend and Product Analysis
Release: 31 March, 30 September 2024
Language: Traditional Chinese / English
Format: PDF / EXCEL
Page: 50-60 / Semi-Annual