The SML-D12M8WT86C is part of ROHM's EXCELEDTM series, featuring original device technology that enables high brightness and high reliability. This SMD LED, with a compact 0603 footprint, offers a yellowish-green emission at a dominant wavelength of 572nm. It is designed to operate at a forward voltage of 2.2V, with a typical luminous intensity of 25mcd when driven at 20mA. The component is AEC-Q101 qualified, making it suitable for automotive applications where reliability under harsh conditions is paramount.
This LED utilizes AlGaInP chip technology, ensuring efficient light emission and longevity. It is specified to operate within a temperature range of -40ºC to +85ºC, accommodating a wide range of environmental conditions. The recommended solder pattern and dimensions provided in the datasheet facilitate easy integration into PCB designs, supporting both high-density packing and precise optical alignment.
LED
Light Emitting Diodes (LEDs) are semiconductor devices that emit light when an electrical current is passed through them. They are widely used in various applications, from simple indicator lights to complex displays and lighting systems. LEDs offer advantages over traditional light sources, including lower energy consumption, longer lifetime, improved physical robustness, smaller size, and faster switching.
When selecting an LED for a design, engineers should consider parameters such as color (wavelength), intensity, power requirements, and package size. The application's environmental conditions, such as temperature and humidity, also play a critical role in selecting an appropriate LED. LEDs come in various colors, including visible, ultraviolet, and infrared, with different materials used for the semiconductor to achieve the desired emission spectrum.
The development of LEDs has led to devices that can emit brighter light with lower power consumption. High-brightness LEDs are now commonly used in automotive lighting, signaling, and display applications. The reliability and longevity of an LED are influenced by factors such as operating current, temperature, and thermal management within the device. Proper circuit design and packaging can significantly enhance an LED's performance and lifespan.
In addition to brightness and color, the viewing angle is an important consideration for LEDs, especially in display applications. This parameter defines the spread of light from the LED and can affect the appearance and effectiveness of the light output in different applications. Engineers must also consider the LED's forward voltage and current requirements to ensure compatibility with the power supply and to achieve the desired luminous intensity.