LED Chips and RF Semiconductors – Cree

“Cree LEDs combine highly efficient InGaN materials with proprietary substrates to deliver superior price/performance for high-intensity LEDs….”

LED Chips and Lighting from Cree

Product line include lighting-class LEDs, LED lighting Solutions. They also have semiconductors for wireless and power applications.

Cree - Led Lighting and Wireless Semiconductors

Wolfspeed, A Cree Company, stands alone as the premier provider of the most field-tested SiC and GaN Power and RF solutions in the world. As the leader in wide bandgap semiconductor technology.

Cree Lighting Solutions

“The lighting elements of LEDs are modulated by diffusers, so you won’t be distracted by hotspots or glare. The only thing you’ll experience is life under beautiful, radiant light.”

LED Lighting Devices from Nichia

Japanese chemical engineering and manufacturing company, headquartered in Tokushima, Japan. Specializes in the manufacturing and distribution of phosphors, including light-emitting diodes (LEDs), battery materials, and calcium chloride.

Light Emitting Diode – InGan LED NICHIA

Light Emitting Diode - InGan LED NICHIA

Nichia 219 white LED offers typical 140 lumen output at 1 W input power with 5,000 K color temperature. Using a uniformly phosphor coated chip, Nichia 219 has the industry leading source brightness and tightest optical footprint.

High Power Point Source White Led NVSx219AWe rolled out a better idea

The spatial color uniformity is also optimized with Nichia’s leading phosphor technology. At 350 mA drive current, the typical forward voltage is only 3.0 V. Additionally, this package is capable of drive currents up to 1.5 A.

GE – LED Lighting Solutions

GE Lumination offers a wide range of world-class, environmentally responsible LED solutions and systems for signage, architectural, transportation, display lighting and general illumination applications. Lumination is a GE Consumer & Industrial business in collaboration with Nichia.

GE – LED Lighting Solutions

Solid-state lighting solutions can be built using Vio LED. Energy savings, long life and robustness. “Vio LEDs combine 405 nm violet chips with proprietary phosphors to create a natural white light.” Warm white light, similar to Edison Filament Lamp.

Vio White LED - Lumination GE

Vio White LED – Lumination GE – 2009

GE Lighting’s Vio LEDs were the first of their kind to utilise remote phosphor technology. Combining violet chips with phosphors applied to the hemispherical lens of the LED, radiation is converted directly to white light without colour mixing. Vio LEDs are available in 3000K, 3500K and 4100K colour temperatures and can be used in many standard fixtures designed for general illumination applications.

Vio LEDs provide high efficiency at warmer colour temperatures, as well as flexible colour temperature and colour rendering options making them a viable, energy efficient alternative to traditional light sources.

LUXEON Rebel White – Philips Lumileds

LUXEON Rebel LEDs are designed for a wide range of lighting applications and available in specifi Correlated Color Temperatures (CCT) and Color Rendering Index (CRI) combinations, flux and CCT combinations and even specified efficacy.

LUXEON Rebel White – Philips Lumileds

LUXEON Rebel White - Philips Lumileds

Electrical Characteristics at 350 mA for LUXEON Rebel – Thermal Pad Temperature = 25ºC
Part No – LXM3-PW71

  • Nominal CCT – 3000K
  • Typical CRI – 85
  • Typical Luminous Flux – 77 lm
  • Forward Voltage Vf – Typ – 3.00 V
  • Color Temperature – CCT – 3045K
  • Typical Viewing Angle – 120 Degrees

LED Technology Glossary

Correlated Color Temperature (CCT) – The phrase use to describe the temperature at which a Planckian Black Body Radiator and an illumination source’s appear to match, usually specified in Kelvin (K).

CRI or Color Rendering Index – The calculated rendered color of an object. The higher the CRI (based upon a 0-100 scale), the more natural the colors appear. Natural outdoor light has a CRI of 100. Common lighting sources have a large range of CRI.

Flux – The sum of all the lumens (lm) emitted by a source (see lumen).

From – Philips Lumileds Lighting Company

XLamp XP-G Power LED from Cree

Optimized for high lumen directional lighting applications, the XLamp XP-G LED set a new standard for light output and efficacy in a small form factor LED.

345 lumens at 1 A. High light output and efficacy in single-die LED. Typical efficacy up to 132 lm/W

XLamp XP-G Power LED from Cree

XLamp XP-G Power LED from Cree

Some Characteristics

  • Viewing angle (FWHM) …. 125 degrees
  • Temperature coefficient of voltage … -2.1 mV/°C
  • DC forward current …1000 mA
  • Reverse voltage .. 5V
  • Forward voltage (@ 350 mA) … 3.0V Typical
  • Forward voltage (@ 1000 mA) … 3.3V Typical

LED Chips and Lighting from Cree

“Cree LEDs combine highly efficient InGaN materials with proprietary substrates to deliver superior price/performance for high-intensity LEDs….”

Product line include lighting-class LEDs, LED lighting Solutions. They also have semiconductors for wireless and power applications.

Z-Power LED – Seoul Semiconductor

Designed with Seoul Semiconductor’s own phosphor and packaging technology. The P4 emits 240 lm at 1A. Luminous efficacy of 100 lm/W @ 350 mA at the maximum, with only a single die. Z-Power series is designed for high current operation and high flux output applications.

Z-Power LED – Seoul Semiconductor

Z-Power LED’s thermal management perform exceeds other power LED solutions. It incorporates state of the art SMD design and Thermal emission material. Z Power LED is ideal light sources for general illumination applications, custom designed solutions, automotive large LCD backlights.

Z-Power LED - Seoul Semiconductor

Z-POWER LED Series Electrical Drive Management – PDF

” Why constant current?  – LED is the component that allows current through itself according to input voltage. In other words, it is close to voltage control component. General LED, especially Z-POWER LED must be driven by constant current. There are two main reasons. Firstly, LED is an optical device. How much luminous flux we can get from LED is very important. Generally luminous flux is closely related to driving current. It is easy to recognize and control optical characteristics by current constant. Secondly, LED is more sensitive to voltage than current.”

Seoul Semiconductor Co., Ltd is a Korean company manufacturing LED devices. The company is producing LED packages in two plants in Ansan, Korea.

Seoul Semiconductor Co. Ltd.
1B-25, 727, Wonsi-dong, Danwon-gu, Ansan-city, Gyeonggi-do, Korea 425-851

ROHM – Electronic Components

“ROHM Co. Ltd. was established in Kyoto, Japan, in 1958. ROHM designs and manufactures semiconductors, integrated circuits and other electronic components. These components find a home in the dynamic and ever-growing wireless, computer, automotive and consumer electronics markets…..”

ROHM – Electronic Components

1954 – Toyo Electronics Industry established. Carbon film resistors developed and marketed.
1967 – Transistors and switching diode developed and marketed.

Company History Rohm

  • Discrete Semiconductors
  • Opto Electronics
  • LED / LCD Drivers
  • Sensor ICs
  • Laser Diodes
  • Contact Image Sensor

High speed Switching – High Voltage Resistance MOSFET Series

“ROHM expands its widely used lineup of high speed switching, high voltage resistance MOSFETs for PFC circuits in switching power supplies and main switch circuits with a variety of package types.”

High speed Switching - High Voltage Resistance MOSFET Series