LED Lighting

Würth Elektronik has revealed two reflective optical sensors. These are simple devices, with an infra-red emitter and a photo-transistor, both facing upwards, but work at an unusual wavelength. “These contain both emitters and detectors for 940nm wavelength,” said the company. The “sensors filter out visible light up to 800nm, rather than just up to 700nm, so they are less susceptible ...

Vishay has introduced a 1 Form A solid-state relay with AEC-Q102 qualification and a 100V load voltage, claiming it to be industry’s first. Packaged in low-profile SOP-4 package (5 x 7 x 2.2mm), VORA1010M4 typically turns on and off in 100μs, and operates up to +125°C. “The fast turn-off time is a result of its integrated turn-off circuit, while its ...

Diodes has introduced a 12-channel constant-current LED driver arranged as four channels of RGB. AL58221 has open-drain outputs that can sink up to 60mA and withstand 24V. Maximum red green and blue currents are set with three resistors, then the individual channels are digitally-modulated to set their brightness. To reduce flicker, adaptive pulse density modulation is used, with diodes claiming ...

Cree LED has up-graded its 1.6 x 2.05mm lens-less XE-G led family, claiming a 20% increase in efficiency for RGBW systems, and a 10% or higher efficiency gain for 13 of the 18 available colors. These devices are intended to be packed closely under colour-mixing optical systems. As such, the gap between emissive surface and package edge is kept small ...

Lumissil Microsystems has created a pair of LED drivers that include a 32MHz 8051 microcontroller. “These new controllers enable lighting engineers to create customised dynamic LED lighting animations tailored to their system requirements,” according to the company. “They feature integrated non-volatile memory to store animation sequences and LED parameters, essential for dynamic lighting effects such as colour transitions, pulsing, fading ...

Cree LED is aiming at portable lighting with a 16,500 lumen multi-die LED in a 10 x 10mm package with a 9mm primary lens (right). Called XFL10K, it has two cousins: the 14,247 lm XFL08K which comes in the same package, but with an 8.5mm lens, and the 7 x 7mm 8,335 lm XFL05K with a 6mm lens. These are ...

Cinch Connectivity Solutions has announced a 100Gbit/s optical transceiver, intended for tough environments including aerospace, industrial and military. H28-100G-SR4 has four transmit and four receive channels, each rated at 25.78Gbit/s. For ease of installation and replacement, the package has a square array of flat pads underneath and it mounts to a similar array on the associated PCB via a guide ...

Melexis has extended its LIN RGB automotive LED driver offering with the MLX81123 offering cost-effective performance and reliability in a small package. Ambient LED lighting is now a key design feature for automotive manufacturers, enhancing the end-user’s experience and helping OEMs to provide striking visual distinction. With well known OEMs utilising ambient lighting extensively across their latest models, maintaining a ...

Novosense Microelectronics announced a 24 channel automotive LED driver at PCIM in Nuremberg today. NSL21924 is a high-side driver, aimed at rear lights, exterior lights and general automotive interior and body lighting. 16 channel NSL21916 is also available. Qualification is to AEC-Q100 Grade 1 (Tj = -40 to +150°C). The LED supply voltage can be across 3 to 16V, and ...

Silanna UV will launch a 235nm LED at ICFUST 2024, the International Congress on Far-UVC Science and Technology. SF1-3M1FWL1 is a 700mW input (30mA, 23.5V nominal) device that typically emits 3mW of UV radiation at that current. typical emission angle is 125°. Packaging is 6.8 x 6.8 x 1.38mm surface-mount. “This LED is effective for surface disinfection, air purification, medical ...