UVA-340 Deep UV-LED, AlGaN UVA-340 is an AlGaN based, narrow bandwidth, 340nm LED available in different configurations. Deep UV-LEDs are widely used for water sterilization, air purification, germicidal and medical applications, diagnostics, and laboratory testing. Specifications • • • • Packaging Options • • • • • Structure: AlGaN Peak Wavelength: 340 nm Optical Output Power: typ. 1.4 mW Life Time: >3000 hours Bare chip die TO-39 open can TO-39 flat window TO-5 flat window TO-5 hemispherical lens Absolute Maximum Ratings (Ta=25°C) Parameter Power Dissipation, DC Forward Current, DC Reverse Voltage (IR=10µA) Reverse Current (VR=5V) Operating Temperature Storage Temperature Soldering Temperature (max. 5s) Symbol PD IF VR IR Topr Tstg Tsol Value 220 40 -10 1 -20 … +50 -20 … +85 190° Unit mW mA V µA °C °C °C General Characteristics (Ta=25°C) Parameter Peak Wavelength Optical Power Beam Angle Forward Voltage Half Width (FWHM) Life time Symbol λP PO φ UF Δλ Condition IF = 20 mA IF = 20 mA IF = 20 mA IF = 20 mA IF = 20 mA IF = 20 mA Min. 335 1.0 3000 Typ. 340 1.4 160 5 9 Max. 345 5.5 - Unit nm mW degree V nm h Wavelength measurements tolerance is +/- 2% Output power measurement tolerance is +/- 10% Voltage measurement tolerance is +/- 2% 25.04.2013 UVA-340 1/4 Typical Performance Characteristics Radiant Power vs. Forward Current: Forward Current vs. Forward Voltage: Relative intensity vs. Peak Wavelength: Wavelength Shift vs. Forward Current: Reliability 25.04.2013 UVA-340 2/4 Far Field Pattern (IOP=25 mA) Chip Die Layout (all dimensions in µm) Solder (Au-Sn) or Resin (Ag) is recommended for bonding of the submount 25.04.2013 UVA-340 3/4 Precautions Operation In order to ensure the correct functioning of these LEDs, compliance to the maximum electrical specifications is paramount. These LEDs are particularly sensitive to any current value that exceeds the absolute maximum rating of the product. Any applied current in excess of the maximum specification will cause damage and possible complete and may result in complete failure of the product. The current flowing in a LED is an exponential function of the voltage across it. A small change in voltage can produce a very large change in current and lead to complete failure of the LED. The use of a current regulated drive circuit is recommended for these products. Any attempt to drive these LEDs with a voltage source instead of a current source will cause damage and possible total failure of the product UV-Radiation These devices are ultraviolet LEDs. During operation, the LED emit high intensity ultraviolet (UV) light, which is harmful to skin and eyes. UV light is hazardous to skin and may cause cancer. Avoid exposure to UV light when the LED is operational. Precautions must be taken to avoid looking directly at the UV light without the use of UV protective glasses. Do not look directly at the front of the LED or at the LEDs lens when the LED is operational. It is advised, to attach a warning label on products/systems that utilize UV LEDs: Static Electricity UVTOP LEDs are ESD (electrostatic discharge) sensitive. Static electricity and surge voltages seriously damage UV LEDs an may result in complete failure of the device. Precautions must be taken against ESD when handling or operating these devices. 25.04.2013 UVA-340 4/4