u VC LEDs NUVC Series Dangers of UV

u. VC LEDs NUVC Series Dangers of UV It is important to recognize that some of the same qualities that make UV LEDs very powerful and useful – their short wavelength and high energy – are also the qualities that make them dangerous The warning labels on UV LEDs and their products are clear but bear noting: UV-LEDs emit invisible ultra-violet radiation when in operation, which may be harmful to eyes or skin, even for brief periods. 1

UV LEDs: Type UVC New Product Release NUVC 66 Series UVC type SMT LEDs § Long lifetime LED construction § Precise 278 nm wavelength energy § Small SMD case size § Replace short lifetime UV lamps § Replace energy wasteful UV lamps § Eliminate hazardous disposal common to UV lamps * § Wide operating range of -40°C to +60°C § Supports wide range of applications NIC Components is pleased to announce the addition of UVC type LEDs to its’ expanded offering of UV LED products. The newly added NUVC 66 series operates at 278 nm, with a radiant flux of 1. 3 m. W minimum at 20 m. A forward current and forward voltage of 5. 7 V. Ideal for use in water purification, sterilization and disinfection applications, phototherapy, florescent spectroscopy, sensor light for instrumentation applications, bio-analysis detection, counterfeit detection, as well as in curing applications, in conjunction with UVA (longer) wavelength LEDs for superior results, in surface curing, over single wavelength methods. Supplied in surface mount 6. 0 mm x 6. 0 mm package, with 1. 4 mm height, NUVC 66 is ideal for use in low profile applications. With thermal resistance of 37°C/W, the NUVC 66 ceramic body package includes thermal pad on underside of the device, for heat dissipation and improved thermal management. LED construction provides long lifetime performance over operating temperature range of -40°C to +60°C, with a thermal junction maximum of +65°C. Supplied tape and reeled on embossed carrier tape for automated pick and placement, followed by reflow soldering, NUVC 66 is Ro. HS compliant and halogen free. NUVC 66 unit pricing from $28. 15 each, in production volumes. Please contact NIC for samples and to review your requirements. * - UV lamps contain mercury, a toxic substance, classified as a hazardous substance, and therefore UV lamps must be disposed of in a safe manner, to comply with the WEEE directive 3/18/2018 2

UV LEDs: Type UVC New Product Release 3/18/2018 3

UV LEDs: Type UVC New Product Release Solder attach this large heat sink terminal (thermal pad) to metal PCB to maximize heat transfer, and control junction temperature (Tj) below +65°C 3/18/2018 4

UV LEDs: Type UVC New Product Release Spectrum half width (Δ ) is the width of the wavelength emission curve at 50% (half) of full intensity PN: NUVC 66 DW 278 TRF the spectrum half width is 12 nm (Typ) 3/18/2018 Radiation pattern for PN: NUVC 66 DW 278 TRF 121° viewing angle is characterized at 50% emission intensity 5

UV LEDs: Type UVC New Product Release NUVC 66 Series UVC type SMT LEDs 3/18/2018 See NIC specification for performance and characteristics curves http: //www. niccomp. com/catalog/NUVC 66. pdf ? - Review your requirements with NIC technical support: tpmg@niccomp. com 6

UV LEDs: Type UVC New Product Release NUVC 66 Series UVC type SMT LEDs Application: UV Sterilization Demo module NIC PN: NUVC 66 DW 278 - Demo Module 3/18/2018 7

UV LEDs: Type UVC New Product Release NUVC 66 Series UVC type SMT LEDs Application: UV Sterilization GUIDELINE: Use metal PCB with high thermal conductivity, so the temperature of LED package does not exceed the maximum junction temperature (TJ) of +65°C Demo module NIC PN: NUVC 66 DW 278 - Demo Module Heat GUIDELINE: Thermal management and thermal design is important to consider from earliest design stage, as performance of the UVC LED package will be affected by thermal resistance of the circuit board, the density of the LED placement with surrounding components and effectiveness of the heat dissipation (heat sink, cooling) connection to thermal pad on underside of the component (see drawing left) ? – Unsure? … Please review your requirements with NIC technical support: tpmg@niccomp. com 3/18/2018 8

UV LEDs: Type UVC New Product Release 3/18/2018 9

UV LEDs: Type UVC New Product Release 3/18/2018 10

UV LEDs: Type UVC New Product Release NUVC 66 Series – Thermal Characteristics Thermal junction temperature ‘Tj’; at ambient temperatures +25°C / +40°C / +60°C 3/18/2018 11

UV LEDs: Type UVC New Product Release NUVC 66 Series: Lifetime – Endurance Characteristics Typical lifetime endurance performance § Ambient Temperature: +25°C § UVC type: PN: NUVC 66 § Life test period: 3000 hrs ~ 8000 hrs § Drive Current: 20 m. A § Tj : +40°C Life test limit: 50% decrease in output Lifetime - Endurance performance: 18, 000 hours 3/18/2018 12

UV LEDs: Type UVC Roadmap P/N: NUVC 35 DW 278 TRF (3535 package 278 nm wavelength) P/N: NUVC 66 DW 278 TRF (6060 package, 278 nm wavelength) Power Level >1 m. W @ 15 m. A 1. 3 m. W @ 20 m. A 10 m. W @ 100 m. A 50 m. W @ 110 m. A 3/18/2018 Wavelength 278 nm TBA Packaging 3535 6060 Die Size (um) Schedule NUVC 35 DW 278 TRF 370 x 370 Mass Production Q 4 2015 NUVC 66 DW 278 TRF 370 x 370 In Mass Production 550 x 550 Q 1 2016 370 x 370 Q 2 2016 150 x 150 TBA 13

Applications – UVC … in microorganisms UVC light typically from 245 nm to 280 nm will break the molecular bonds within DNA, rendering them harmless or prohibiting growth and reproduction UVC - 278 nm Ultraviolet germicidal irradiation (UVGI) is a disinfection method that uses short-wavelength ultraviolet (UV-C) light to kill or inactivate microorganisms (such as bacteria, viruses, molds and other pathogens) by destroying nucleic acids and disrupting their DNA, leaving them unable to perform vital cellular functions. UVGI is used in a variety of applications, such as food, air, and water purification. UV treatment does not alter the material (water, food, air) chemically; nothing is being added except energy and the sterilized microorganisms are not removed. HISTORY: The application of UVGI to disinfection has been an accepted practice since the mid-20 th century. It has been used primarily in medical sanitation and sterile work facilities. Increasingly it has been employed to sterilize drinking and wastewater. In recent years UVGI has found renewed application in air purifiers. For water treatment low-pressure mercury vapor lamps produce ultraviolet radiation for disinfection and ozone destruction. The UV lamp never contacts the water; it is either housed in a quartz glass sleeve inside the water chamber or mounted external to the water which flows through UV transparent tubes. UVGI - Water 3/18/2018 UVGI - Air global market for ultraviolet (UV) disinfection equipment $1. 1 billion (2013) 14

Applications – UVC Ultraviolet (UV) Collimated Beam Systems employ LEDs that emit radiation in the germicidal range. The reduced footprint of these UV LEDs, coupled with their low-power consumption allows the realization of a table-top scale, homogenized UV delivery system. In addition, UV LEDs feature an narrow band emission, allowing our systems to provide engineered spectra. Our UV LED source features instant On/Off capabilities coupled with compact size, allowing for increased energy and space efficiency. UVGI - Water Collimated Beam for Water / Wastewater Ultraviolet Disinfection 3/18/2018 15

Applications – UVC Instant On/Off = Pulsed Operation White Paper (WP) – "Pulsed UV-C disinfection of Escherichia coli with light-emitting diodes, emitted at various repetition rates and duty cycles" Abstract: … (UVC) LEDs would use less power, and allow more flexibility than other sources of UV energy in that the user may select various pulse repetition frequencies (PRFs), pulse irradiances, pulse widths, duty cycles and types of waveform output (e. g. square waves, sine waves, triangular waves, etc. ). Our study exposed Escherichia coli samples to square pulses of 272 nm radiation at various PRFs and duty cycles. A statistically significant correlation was found between E. coli's disinfection sensitivity and these parameters. Although our sample size was small, these results show promise and are worthy of further investigation. … 3 rd Party Comments on above WP: The authors predict that LED pulsing at 10% duty cycle would provide the most energy-efficient disinfection. 3/18/2018 16

Competing Technologies & Applications – UVC Xenon Lamp Mercury Lamp UVC LED Competing Technologies Among the UV ‘lamp’ options, xenon lamps reach hundreds of watts but have a very broad spectrum (Wasteful!) that spans both UV and visible/near-IR regions. Unfortunately, as the chart left shows, lamps suffer from the age-old afflictions that are causing the lighting industry to move to LED options: Lamps are cheaper today (about $100 for xenon/mercury-xenon), but suffer from shorter lifetimes and may succumb to LED successes in reduced energy consumption and ruggedness. UV disinfection products for surfaces (non-mercury pulsed xenon lamps), for water purification (lamps and LEDs) So just who is using UV disinfection? Hospitals are embracing the technology more and more, especially considering that certain Medicare payments are stopping for hospital stays caused by surgical site infections (SSIs) …a large commercial market; water treatment facilities around the world use UV lamps to kill bacteria. They currently use mercury vapor lamps, which are inefficient and offer little directional control. Another application is the sterilization of water in remote areas. 3/18/2018 17

Competing Technologies & Applications – UVC Competing Technologies Mercury Lamp vs. UV LED Advantages UV LEDs 3/18/2018 18

Competitors – UVC Some SMD UVC LED Competitors Series - Reference AKM-Asahi Kasei Microdevices OPTAN-WSK-SMD Crystal IS OPTAN-WSK-SMD Dowa x. Fx. V_ Nichia Contact for evaluation samples Nikkiso (SETi) - Sensor Electronic Technology, Inc Seoul Viosys Tianhui 3/18/2018 Micro SMD UVTOP CUD 8 AF 1 A TH--UV 275_ 19

Review – Q & A - UVC LEDs NUVC 66 Questions: Answers: What UVC wavelengths can NIC support? NIC supports 278 nm UVC LEDs in NUVC series See NUVA series for 365 nm, 385 nm, 395 nm & 405 nm UVA LEDs NUVC 66 has radiant flux of 1. 3 m. W minimum at 20 m. A What optical output power (radiant flux) can forward current & forward voltage of 5. 7 V you support? Higher power; 10 m. W and 50 m. W versions will be released in 2016 What is the component size? NUVC 66 is 6. 0 mm x 6. 0 mm package, with 1. 4 mm height … Smaller case size NUVC 33 in 3. 5 mm x 3. 5 mm size will be released soon See NIC product specification for performance and Where can I review the performance curves for characteristics curves this device? www. niccomp. com/catalog/NUVC 66. pdf What is the component lifetime? 18, 000 hours (see life test data-conditions) Expanded additional life testing in process What is the reflow soldering heat rating for this +260℃ reflow soldering heat rated, compatible with Pbdevice? Free and legacy Sn-Pb soldering processes What is the typical cost for this device? NUVC 66 is $28. 15 each in production volumes Can NIC support to see the UVC in die format Yes, Please review your requirements with NIC product and instead of as component? TPMG team Whom can I reach out to for technical support? 3/18/2018 NIC TPMG team; USA - NA, Europe and SE Asia tpmg@niccomp. com 20

Q&A Open Discussion NIC has broad offering in Performance Passives Additional Information Needed? Need Samples? Technical Support: tpmg@niccompcom Sales Support: sales@niccomp. com European Engineering Support North America Engineering Support SE Asia Engineering Support Page 21 3/18/2018 21