Bolb SMD LED UVC S3535-H 265nm 170mW at 350mA 2.27W with PCB (10x10mm)

Bolb SMD LED UVC S3535-H 265nm 170mW at 350mA 2.27W with PCB (10x10mm)

This product is a high-power UV-C LED with a peak wavelength of 265 nm and a radiant power of 170 mW at the specified drive current.

The germicidal effect of UV-C radiation is well documented: photons in the 250–280 nm range are absorbed by the DNA and RNA of micro-organisms and form dimers that prevent replication, which inactivates bacteria, moulds and viruses. The decisive design parameter is the dose, that is the irradiance on the target surface multiplied by the exposure time, so the radiant power, the beam angle and the working distance all have to be considered together when sizing an application.

This version is supplied ready-mounted on a 10 x 10 mm metal-core board. That solves the two hardest problems of working with deep-UV packages: the LED is already soldered with the correct profile, and the metal core conducts the heat away from the die. Reflow-soldering a UV package by hand is difficult and easily damages it, so the pre-mounted version is usually the faster and safer route into a prototype.

Two properties distinguish UV LEDs from white LEDs in the design work. Their radiant output is specified in milliwatts rather than lumens, because the human eye is not the measuring instrument here. And they are considerably more sensitive to junction temperature, with both the output and the lifetime falling noticeably as the LED heats up, so a generously dimensioned heat sink is not optional.

About Bolb

Bolb Inc. is a US-based specialist in deep-ultraviolet LEDs that develops and manufactures its own AlGaN semiconductor structures. Bolb concentrates exclusively on the UV-B and UV-C range, and its packages are used in water, air and surface disinfection systems where high wall-plug efficiency and documented radiant flux are essential. For germicidal applications the radiant power in milliwatts, not the perceived brightness, is the only figure that counts, and Bolb specifies it per package.

Important safety information

UV-C and UV-B radiation is harmful to skin and eyes. This product is intended exclusively for professional and industrial use and must never be operated where people, animals or plants can be exposed to the direct or reflected radiation. Suitable protective equipment, interlocks and shielding are mandatory, and the applicable national regulations on optical radiation at the workplace must be observed. The product is supplied as a component for integration by qualified personnel.

Technical features

• Bolb S3535-H LED package
• Light colour: UVC
• Peak wavelength: 265 nm
• Radiant power: 170 mW (typical)
• Power consumption: 2.27 W
• Operating point: 350 mA at 6.5 V
• Dimensions: 10 x 10 x 3 mm
• Manufacturer part number: S3535-H

Applications

• Air, surface and water disinfection systems
• Medical and laboratory equipment
• Industrial process and conveyor disinfection
• OEM integration into sterilisation devices