FEATURES. Available in peak wavelengths from 250 nm to 280 nm Industry leading light output available in bins from 0.5 mw to

Transcription

1 Crystal IS introduces Optan UVC LEDs in a TO-39 package which offer superior light output and spectral quality. Available in peak wavelengths from 250 nm 280 nm and power bins from 0.5 mw-4 mw, these LEDs are ideal for spectroscopic applications in analytical and life sciences instrumentation. Optan s high light output increases the sensitivity of detection while the excellent spectral quality provides measurement linearity over a wider range. Optan offers best-in-class reliability and lifetime for uninterrupted, continuous operation. We achieve superior efficiency and reliability by using low defect aluminum nitride (AlN) substrates, and by epitaxial growth of crystal layers which preserves the low defect densities of the substrate. The result is higher power and longer lifetimes in the UVC spectrum than other commercially available LEDs. FEATURES Available in peak wavelengths from 250 nm to 280 nm Industry leading light output available in bins from 0.5 mw to 4 mw Excellent spectral quality Viewing angle of 15 Maximum drive current of 100 ma Superior lifetime and reliability Hermetically sealed LEDs RoHS-compliant Product designers can use the information in this document, in conjunction with the Crystal IS thermal management note HS01, to start designing applications to your unique specifications. CRYSTAL IS TECHNICAL DATA SHEET 1

2 TABLE OF CONTENTS Product Nomenclature 3 Typical LED Characteristics 4 Typical Radiation Pattern 5 Typical Electrical Characteristics 5 Typical Spectral Characteristics Over Current 6 Typical Spectral Characteristics Over Temperature 6 Typical Light Output Characteristics Over Current 7 Typical Light Output Characteristics Over Temperature 7 Reliability 8 Mechanical Dimensions 9 Recommended Soldering Guidelines 10 Recommended Operation 11 Handling Precautions 11 Eye Safety Guidelines 11 RoHS Compliance 12 CRYSTAL IS TECHNICAL DATA SHEET 2

3 PRODUCT NOMENCLATURE For Optan, the emission wavelength is binned between 250 nm and 280 nm and the optical power is binned from 0.5 mw-4 mw. The part number designation is explained as follows: OPTANAB A denotes the peak wavelength in nm B denotes the bin for minimum optical ma Therefore, a 255 nm Optan LED with a minimum optical output of 1 mw follows the designation: OPTAN255J Part Number 1 Peak Wavelength 2 Optical 100 ma 3 OPTAN250J 250 nm 1.0 mw mw OPTAN255H 250 nm nm 0.5 mw mw OPTAN255J 255 nm 1.0 mw mw OPTAN260J 260 nm 1.0 mw mw OPTAN275H 270 nm nm 0.5 mw mw OPTAN275J 275 nm 1.0 mw mw OPTAN275K 275 nm 2.0 mw-3.0 mw OPTAN275L 275 nm 3.0 mw mw OPTAN280J 280 nm 1.0 mw mw OPTAN280K 280 nm 2.0 mw mw OPTAN280L 280 nm 3.0 mw mw Notes: 1. LEDs are produced with semiconductor technology that is subject to process variation, yielding a range of flux performance that is approximately Gaussian in nature. To provide customers with fine granularity within the overall flux distribution, Crystal IS separates LEDs into optical power bins. 2. Peak wavelength measurement tolerance is ± 2.5 nm. 3. Optical power output measurement tolerance is ± 10%. Output power is measured using a 100 ma current pulse of < 1s duration at an ambient temperature of 25 C ± 5 C with the diode inserted into an integrating sphere. CRYSTAL IS TECHNICAL DATA SHEET 3

4 LED CHARACTERISTICS Characteristic Unit Min. Typical Max. Viewing angle¹ degrees 15 Full width at half maximum nm 15 Forward 100 ma 2 V 10 Thermal resistance, junction to case C/W 37 Power dissipation W 1.0 Forward current (Continuous/ Pulsed) ma 100 Reverse voltage V -5 Operating temperature range C 5 55 Storage temperature C Junction temperature C 85 Notes: 1. Viewing angle is the off axis angle from the center of the beam where the light output is ½ of the peak value. 2. Voltage tolerance is ± 5% CRYSTAL IS TECHNICAL DATA SHEET 4

5 TYPICAL RADIATION PATTERN Optan LEDs with a ball lens, have a nominal viewing angle of 15. Normalized Intensity, a.u TEST CONDITIONS: I(CW) = 100 ma TYPICAL ELECTRICAL CHARACTERISTICS The typical forward foltage is less than 10 V at an operating current of 100 ma Test Conditions: I(Pulsed mode) = 0 to 100 ma Case Temperature (T C ) = 25 C Current, ma Voltage, V CRYSTAL IS TECHNICAL DATA SHEET 5

6 Typical Spectral Characteristics over Current The plots below show the stability of the peak wavelength with various applied currents. Intensity, a.u I(Pulsed Mode) 20 ma 60 ma 100 ma TEST CONDITIONS: Case Temperature (T C ) = 25 C Wavelength, nm Typical Spectral Characteristics over Temperature The plot below illustrates the stability of the spectral characteristics with change in temperature. Intensity, a.u Case Temperature (T C ) 20º C 40º C 60º C TEST CONDITIONS: I(Pulsed Mode) = 100 ma Wavelength, nm CRYSTAL IS TECHNICAL DATA SHEET 6

7 TYPICAL LIGHT OUTPUT CHARACTERISTICS OVER CURRENT The plot below shows the typical variation in light output with forward current. The light output data is normalized to the light output at 100 ma. 100 TEST CONDITIONS: Case Temperature (T C ) = 25 C Relative Light Output, % Forward Current (Pulse), ma TYPICAL LIGHT OUTPUT CHARACTERISTICS OVER TEMPERATURE The output power is very sensitive to junction temperature and care must be taken to keep the junction temperature as low as possible to get the best performance and lifetime. The plot below shows the change in optical power with the increase in case temperature. A typical drop of 5 percent in light output is noticed for a 10 C rise in temperature. 100 TEST CONDITIONS: I(Pulsed Mode) = 100 ma Relative Light Output, % Junction Temperature (T J ), C CRYSTAL IS TECHNICAL DATA SHEET 7

8 Reliability Prior to releasing Optan LEDs to production, Crystal IS puts a representative product sample set through pre-release qualification tests. Our pre-release qualification test suite, shown below, is based on standard semiconductor pre-release qualification test conditions and methods defined by the Joint Electron Device Engineering Council (JEDEC). Test Test Conditions Test Duration Room temperature opterating life (RTOL) 100 ma 1000 hours High temperature operating life (HTOL) 85 C, 100 ma 1000 hours Low temperature operating life (LTOL) -40 C, 100 ma 1000 hours High temperature high humidity operating life 55 C, 85% RH, 100 ma 1000 hours High temperature storage 100 C 1000 hours Low temperature storage -40 C 1000 hours Temperature Cycle -40 C (30 min), 100 C (30 min) 100 cycles Vibration 200m/sec 2, Hz, 4 cycles, 4 minutes, each X, Y, Z 48 minutes CRYSTAL IS TECHNICAL DATA SHEET 8

9 MECHANICAL DIMENSIONS The Optan package is comprised of a header with a copper slug and a Kovar cap that is welded to the header to provide hermetic sealing. The cap contains a fused silica ball lens which provides the nominal viewing angle of 15. All dimensions are in millimeters. anode cathode Ø 5.4 ±0.005 case Ø 9.15 Ø nom. 2.4 Ø ± 0.75 Ø R CRYSTAL IS TECHNICAL DATA SHEET 9

10 Recommended Soldering Guidelines 1. The pitch of the LED lead should match the pitch of the mounting holes on the PCB during component placement. 2. When soldering wire to the LED, use an individual heat shrink tube to insulate the leads to prevent accidental contact short circuit. 3. Maintain a minimum of 3 mm clearance between the base of the LED and the surface of the PCB, as illustrated below in figure (a). If bending the LED is needed, the bend point must be at least 3 mm from the base of the header as shown in figure (b). 3 mm min. 3 mm min. RECOMMENDED CLEANING Cleaning with isopropyl alcohol is recommended. Propanol and ethyl alcohol may also be used. DO NOT use ultrasonic cleaners with Crystal IS LEDs. DO NOT use acetone or trichloroethylene to clean Crystal IS LEDs. Problems with LEDs such as reduction in light output, opens or shorts can be prevented as long as the LEDs are soldered under these conditions. (a) (b) 4. The tip of the soldering iron should never touch the lens. 5. After soldering, avoid applying external force, stress and excessive vibration until the product returns to ambient temperature. RECOMMENDED SOLDERING CONDITIONS Distance between melted solder sides to bottom of LED should be 3 mm or longer. Parameter Dip Soldering (Lead Free Solder) Hand Soldering (Lead Free Solder) Pre-heat 90 C max. (backside of PCB) ---- Pre-heat time 60 seconds max Temperature 260 C max. (solder bath) 300 C max. (soldering iron tip) Soldering time 5 seconds max. 3 seconds max. CRYSTAL IS TECHNICAL DATA SHEET 10

11 Recommended Operation Crystal IS LEDs should be mounted on a heat sink to keep the case temperature below 55 C at a forward current of 100 ma during operation. Please refer to the Crystal IS thermal management note HS01 for heat sink recommendations. Circuits should be designed for constant current. Handling Precautions LEDs are sensitive to static electricity. When handling, proper ESD protection is required, including: Eliminating static charge Using grounded wriststrap, ESD footwear, clothes and floors Grounded workstation and tools ATTENTION Observe precautions for handling electrostatic sensitive devices. EYE SAFETY GUIDELINES During operation, the LED emits 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 LED is operational. Precautions must be taken to avoid looking directly at the UV light without the use of UV light protective glasses. Do not look directly at the front of the LED or at the LED s lens when LED is operational. Attach the following warning labels on products/systems that use UV LEDs.! High intensity ultraviolet light Eye and skin hazard avoid exposure to eyes/skin Do not look directly at light use eye protection Use warning labels on systems containing UV LEDs CRYSTAL IS TECHNICAL DATA SHEET 11

12 RoHS Compliance The levels of environmentally sensitive, persistent biologically toxic (PBT), persistent organic pollutants (POP ), or otherwise restricted materials in this product are below the maximum concentration values (also referred to as the threshold limits) permitted for such substances, or are used in an exempted application, in accordance with EU Directive 2002/95/EC on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS), as amended through April 21, Disclaimer The information in this document has been compiled from reference materials and other sources believed to be reliable, and given in good faith. No warranty, either expressed or implied, is made, however, to the accuracy and completeness of the information, nor is any responsibility assumed or implied for any loss or damage resulting from inaccuracies or omissions. Each user bears full responsibility for making their own determination as to the suitability of Crystal IS products, recommendations or advice for its own particular use. Crystal IS makes no warranty or guarantee, express or implied, as to results obtained in end-use, nor of any design incorporating its Products, recommendation or advice. Learn more about UVC LEDs from Crystal IS. Contact us today. Crystal IS, an Asahi Kasei company, is an innovative U.S.-based manufacturer of proprietary, high-performance UVC LEDs. Crystal IS products are suitable for monitoring, disinfection and sterilization in a variety of applications, including industrial and point-of-use (POU) water purification as well as infection control in air and surfaces in healthcare industries. The company s powerful and reliable UVC LEDs provide customers with the flexibility to develop new products that enhance and sustain life. For more information, visit cisuvc.com. Crystal IS, Inc. 70 Cohoes Avenue Green Island, NY 12183, USA t sales@cisuvc.com Asahi Kasei Corporation - Global Headquaters Kanda Jinbocho Chiyoda-Ku, Tokyo , Japan Crystal IS, Inc. Crystal IS, the Crystal IS logo and Optan are trademarks of Crystal IS and/or its affiliates CRYSTAL IS TECHNICAL DATA SHEET 12