This sterilization-grade 1W UVC LED chip is mounted on a star-shaped 20mm aluminum metal-core printed circuit board (MCPCB). Emitting in the deep ultraviolet C-band at $254\text{nm}$, this module is engineered for high-purity germicidal irradiation. Unlike standard decorative or long-wave UVA LEDs, this wavelength targets the molecular bonds of cellular organisms, making it a crucial component for compact water purification, medical sanitization, and laboratory sterilization instruments.

Specifications

• Form Factor / Package: 3535 SMD (3.5mm x 3.5mm high-reliability ceramic footprint)
• Mounting Substrate: 20mm Star Aluminum MCPCB (Thermal transfer base)
• Peak Wavelength: 254nm (True short-wave UVC / Germicidal spectrum)
• Total Power Dissipation: 1W
• Radiant Flux (Optical Output): Typically 10mW - 30mW (Note: Optical output is a fraction of total electrical wattage)
• Forward Voltage (VF): Typically 5.0V - 7.0V DC (Higher forward voltage is standard for deep UVC bandgap semiconductors)
• Maximum Forward Current (IF): Approx 100mA - 150mA
• Lens Material: High-purity quartz glass or specialized UV-transmissive window (Standard plastic/epoxy lenses degrade instantly under UVC light)
• Viewing Angle: 120℃ uniform beam profile

Features

• True 254nm Germicidal Efficiency: This wavelength matches the classic low-pressure mercury vapor lamp emission line. It is highly effective at disrupting the cellular structures of microorganisms, providing rapid sterilization without chemical residue or heat.
• Ceramic 3535 Emitter Architecture: Built on a robust ceramic base with an integrated quartz cover. This configuration protects the fragile AlGaN (Aluminum Gallium Nitride) semiconductor layers from atmospheric oxidation and thermal shock.
• Aluminum Star MCPCB Core: The underlying 20mm star board is stamped from high-purity aluminum. It serves as an immediate thermal bridge, spreading the intense heat generated by the microscopic silicon junction away from the chip toward your main cooling hardware.
• Zero Ozone Production: Unlike cold-cathode UVC lamps that can ionize surrounding air to produce toxic ozone gas (O3), solid-state UVC LEDs produce no ozone, allowing safe operation in unventilated chambers.

How 254nm UVC Light Destroys Microorganisms

• The Disruption Mechanism: When 254nm UVC light penetrates the cellular membrane of bacteria, viruses, or molds, it is directly absorbed by the nucleic acids (DNA and RNA).
• Thymine Dimerization: The high-energy photons break existing molecular bonds, causing adjacent thymine bases to fuse together. This creates an uncopyable cellular structural defect known as a thymine dimer.
• Sterilization Effect: Once the genetic code is mutated, the microorganism is rendered completely inactive. It cannot reproduce, colonize, or cause cellular infection, meaning it is biologically dead.

Common Applications

• Medical Instrument Sterilization: Building miniature sanitizing containers for dental tools, surgical implements, and laboratory pipettes.
• Point-of-Use Water Purification: Integrating into low-flow water filtration caps, humidifier reservoirs, and compact camper water treatment kits.
• Surface Disinfection Modules: Outfitting automatic kiosk screens, elevator buttons, and biometric scanners with timed sanitization sweeps.
• Scientific Fluorescent Excitation: Serving as a deep-UV excitation light source for advanced mineral analysis and chemical chromatography sorting.

Critical Drivers & Safety Guidelines

• Constant Current Driver Required: CRITICAL: Do not connect this LED directly to a 5V or 6V fixed-voltage power supply. UVC LEDs feature high forward voltages and are incredibly sensitive to temperature fluctuations. A minute shift in heat triggers thermal runaway, causing the chip to pull excess current until it burns out. You must use a dedicated Constant Current LED Driver calibrated exactly to the chip's rated current (typically 100mA - 150mA).
• Heatsink Installation Mandatory: Even at a modest 1W electrical draw, UVC LEDs convert less than 3% of their energy into light—the remaining 97?comes concentrated thermal waste. The 20mm star board is just a heat spreader. You must mount the star board onto a larger aluminum block or device chassis using thermal paste. Running this chip naked for more than 3 seconds will instantly fry the delicate AlGaN junction.
• Extreme Biological Radiation Hazard: WARNING: High-energy UVC radiation is completely invisible to human eyes but highly destructive to living tissue. * Skin Safety: Direct exposure will cause severe, painful sunburn-like radiation burns on skin within seconds.
  • Eye Safety: Exposure can cause painful corneal inflammation and permanent retinal degradation.
  • Operation: Never activate this LED while it is exposed to open view. Always operate it inside a fully enclosed, light-tight sterilization chamber or wear specialized polycarbonate safety goggles rated explicitly for short-wave UVC shielding. Keep completely out of reach of children and pets.