Lunera T-LED Lamp Family: Engineered for Quality & Reliability

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Application Note Lunera T-LED Lamp Family: Engineered for Quality & Reliability Engineering Best-of-Class T-LED Lamps Lunera s T-LED Lamp family is engineered to be the best-ofclass, setting the industry benchmark for quality, reliability and performance. They deliver the expected, general benefits of an LED lamp including significant energy savings, 50K+ hours long life, maintenance free operation and near full-spectrum, high CRI quality light. But they have incorporated engineering breakthroughs that enhance the performance, quality and reliability of the products (Table 1). This application note introduces these engineering breakthroughs which set s Lunera s T-LED lamps apart from others. Table 1. Engineering Breakthroughs Flexible LED PCB & Driver Electronics LED Selection Glass Tube Construction Thermal Fuse Protection Universal Tombstone Technology (UTT)

2 of 7 Breakthrough 1: Electronics Customer satisfaction is often derived from elements of a product that aren t seen, whereas a failure in design definitely leads to customer dissatisfaction. In Lunera s family of T-LED lamps, the innovation in the electronics package and components aren t seen, but represent a key component to a premium product experience. Linear Lamp Electronics Package Smaller End Cap increases light illumination area. Flexible PCB for LED mounting improves thermal conduction to the glass and reduces the number of solder joints to improve reliability and safety. Patented Driver Electronics maximizes ballast compatibility. The electronics of Lunera s linear LED lamps are designed for superior performance, quality and reliability. Driver Circuitry Lunera invented plug and play LED lamps for commercial lighting, launching our first ballast-driven products in 2013. One of the greatest sources of customer dissatisfaction with ballast-driven T-LEDs is poor ballast compatibility. Lunera leads the industry in T- LED ballast compatibility. Lunera s linear LED lamps have been tested for compatibility in over 200 ballasts and are compatible with Instant-Start, Rapid-Start, and Programmed-Start ballasts. Flexible PCB Assembly Switching from a rigid to a flexible LED PCB eases soldering, improves thermal conduction to the glass, makes the lamp lighter, and improves safety in the event of glass breakage. Furthermore, the compact design of the electronics package helps to minimize the T-LED end cap size and maximize the illuminated area of the tube.

3 of 7 Breakthrough 2: LEDs Selection Lunera uses high-performance LED chips which are then enclosed in a robust package and finished with a top-quality phosphor to ensure a long life with exceptional performance. Throttle Back the Driver Heat kills LEDs. Together with an optimized thermal design, we keep the LEDs in the Lunera T-LED lamps running cool at less than 40% of their rated drive. This keeps the LED current and junction temperature low, which improves efficacy and extends the lamp lifetime. Breakthrough 3: Glass Tube Better Glass Lunera s T-LED lamps are constructed of premium glass tubes coated using a proprietary diffusion technology that does not age, yellow or crack and delivers superior optical efficacy with outstanding lumen maintenance. Our glass tubes do not bend. The exacting manufacturing process toughens the glass tube and includes end necking and sealed end caps, just as a fluorescent tube would have. This strengthens the overall design and resists breakage. Lunera s glass is dramatically better than plastic as shown in the following tables. Our glass offers distinct advantages over many other vendor s glass tubes as well.

4 of 7 Lunera Glass Compared to Plastic T-LED Tubes Lunera Glass Plastic Perception Classic design, valuable Plain, cheap Performance Optical Efficacy 92% 88% Lumen Maintenance Lasting Degrades Thermal Management Thinner, high melting temperature Thicker, lower melting temperature Safety & Reliability Flammability/Arcing No Yes Bending No Yes Yellowing No Yes Cracking No Yes Lunera Glass Compared to Other T-LED or Fluorescent Glass Tubes Lunera Glass Other Glass Material Fine white pure sand Sands with other elements/chemicals Processing Glass Furnace Electric high precision control Coal/Gas Instable process control End Necking (end form) Yes strengthens the end, which is the weak point No Toughening Yes No Capping High strength seal Low strength glue Coating Proprietary diffusion that does not yellow, age, or crack May yellow, age, or crack in 2-3 years

5 of 7 330 Degrees of Uniform Light Distribution The optics of the tube plays a key role in how closely the T-LED lamp matches the appearance of the fluorescent lamp it is replacing. We ve optimized the optical design for a beam angle of ~330 o which makes the light output as close to a fluorescent as possible, perfectly fitting existing fixtures and delivering uniform light across space. Lunera Glass v. Plastic Plastic Tube Lunera Glass 133 o 330 o Hot spots in the troffer Deep shadows on the wall 133 o beam angle Evenly filled troffer Softer, uniform light across the space 330 o beam angle Breakthrough 4: Thermal Fuse Protection on Ballast Driven Lamps The introduction of a Thermal Fuse Protection in our Ballast Driven T-LED lamps protects a facility from a dramatic lamp failure. Thermal Fuse All Lunera s T-LEDs have a disabling fuse on each of the 4 pins. The latest models have an additional Thermal Fuse on the electronics board as the last line of defense. Under certain conditions including arcing, which may occur if the ballast has been improperly wired, the thermal fuses will open, permanently disabling the lamp and preventing overheating and melting. The melting threshold of the fuses is lower than that of the lamp, thus ensuring that the lamp will disable safely.

6 of 7 Breakthrough 5: Universal Tombstone Technology on Line Driven Lamps Lunera s Universal Tombstone Technology (UTT) integrates electronics in the Ballast Bypassed (120V-277V) LED T8 lamps. UTT eliminate the risk of shock while handling the lamp during installation by limiting current leakage at the Neutral end of the lamp. Lunera s Ballast Bypassed (Type-B) T8 LEDs are the first double-ended T8 LED lamps to receive UL Certification. In addition to being certified safe by UL, another benefit from Universal Tombstone Technology is that the ballast bypassed T-LED lamp can now be installed in fixtures using either shunted or nonshunted tombstones. This simplifies the retrofit process by eliminating the need to rewire the fixture or replace shunted tombstones with non-shunted versions. Simply bypass or remove the ballast and install the lamps. This is estimated to reduce instillation time up to 50%. Wiring examples are shown on the following page. 2017 Lunera Lighting, Inc. All Rights Reserved. Lunera and the Lunera logo are registered trademarks. All other trademarks are the property of their respective owners. This document is for informational purposes only. REV 02142017

Engineered for Quality & Reliability 7 of 7 Wiring Simplified with Lunera Ballast Bypassed T-LEDs with UTT Instant Start Ballast 120-277V L N Program Start Ballast 120-277V L N 120-277V BALLAST BYPASSED UTT L S N Double Ended T8 UTT LED Lamp Double Ended T8 UTT LED Lamp Double Ended T8 UTT LED Lamp 2017 Lunera Lighting, Inc. All Rights Reserved. Lunera and the Lunera logo are registered trademarks. All other trademarks are the property of their respective owners. This document is for informational purposes only. REV 02282017