The visually charming glow of XGY LED filament bulbs is delivered by an array of LED filaments in which strings of GaN LED dies are mounted on transparent sapphire substrates and uniformly coated with phosphor-impregnated silicone. The phosphor coating is excited by the wavelength in blue region and generates white light. New Lights' LED filaments are made with sapphire that possesses many advantages over glass, ceramic and copper substrates. The transparency of sapphire substrates allows the LED dies to emit light omni-directionally through the phosphor coating. In contrast to conventional SMD or COB LEDs that emit in a directional Lambertian spatial intensity distribution, LED filaments produce a true 360 degree light distribution thanks to the use of transparent sapphire substrates.
Although glass can be used as a substrate material to achieve the same level of transparency, it is less thermally conductive. Sapphire is also six times more effective than ceramic in heat dissipation. The excellent elasticity and high tensile strength of sapphire make it extremely wear, abrasion and impact resistant, which is not possible with glass or ceramic substrates. Superior physical, thermal and optical properties allow sapphire to become a perfect choice of substrate material in chip on cord (CoC) technology. The strings of individual LED dies are wire bonded to electrical structures on the sapphire substrate using 99.99% purity gold bonding wires. The gold wires are doped to stabilize intermetallic formation for improved mechanical stability and reliability of the bond at elevated temperatures.
High performance chip interconnections as well as solder joints between the filaments and contact wires ensure XGY's LED filament bulbs have excellent thermal performance and electrical breakdown strength in the LED assembly. The bulb is filled with thermally conductive argon gas which allows the heat generated from the LED junctionss to be dissipated rapidly and enables such a bulb to function safely without a bulky aluminum heat sink that is typical of an SMD LED bulb. The hermetically sealed glass bulb is an ideal enclosure that provides the classic aesthetic of an Edison bulb as well high light transmittance and thermal conductivity.
XGY A19 LED filament bulbs consumes 8 watts of power to generate a light output of up to 860 lumens, which is equivalent to a 60W incandescent GLS bulb. With a luminous efficacy as high as up to 120 lm/W, they deliver significant energy savings over a much longer, 30,000-hour rated lifetime. The LED bulb is powered by an IC or SMPS driver that accommodate inputs of 110VAC, 220VAC or 85-265VAC. These vintage style LED bulbs that come with Edison screw or Bayonet style nickel plated or brass bases fits perfectly into the bulb holders of pendant lighting fixtures, industrial style chandeliers, wall sconces, caged fixtures, and outdoor lighting systems (string and rope lights).
- Combines vintage elegance with the latest in LED technology.
- Omni-directional (360°) distribution of light.
- Fabricated on sapphire substrates for performance and reliability.
- High performance chip interconnections using doped gold bonding wires.
- High quality phosphor coating supporting a wide CCT range and good CRI.
- High light transmittance glass bulb filled with inert gas.
- IC or SMPS LED driver providing excellent load regulation with constant current output.
- Uses 90% less energy compared to an incandescent light bulb.
- Nickel plated or brass Edison screw base or Bayonet base.
- Glass tint options: clear, frosted, opal, amber, mirrored.