China Young Sun LED Technology's YSL-R531K3D-D2 is a standard green LED, categorized under LED indication and falling within the broader LEDs category. This article provides a comprehensive analysis of this component, drawing from the available datasheet information (updated 12-JAN-2025) and expanding upon its specifications, applications, and potential uses within various electronic systems. While the provided information is limited, we will extrapolate on common characteristics of similar LEDs to create a more complete picture.
I. Manufacturer and Product Overview:
China Young Sun LED Technology is a significant player in the LED manufacturing industry. Their YSL-R531K3D-D2 represents a typical offering within their product line. The "YSL" prefix identifies the manufacturer, while the remaining alphanumeric code likely designates specific characteristics like size, color, and internal construction. The "-D2" suffix might denote a specific packaging or binning variation, implying consistent performance parameters within that batch. Understanding the manufacturer's reputation and quality control processes is crucial when selecting components for critical applications. Further research into Young Sun LED's certifications and manufacturing processes would provide additional confidence in the reliability and longevity of this particular LED.
II. Physical Characteristics and Packaging:
The datasheet classifies the YSL-R531K3D-D2 as a Green LED – T1 (5mm). This signifies a standard through-hole LED with a 5mm diameter lens. The T1 designation is a common industry standard for this size. The physical dimensions – including the lens height, lead spacing, and overall package dimensions – are critical for PCB layout and component placement. These dimensions, absent from the limited initial information, are typically found in the full datasheet. The package material is usually epoxy resin, chosen for its insulating properties, resistance to moisture and temperature variations, and ease of molding. The datasheet should specify the lead material (likely tinned copper) and its plating type for optimal solderability and corrosion resistance.
III. Optical Characteristics:
The most prominent characteristic is the green color emission. The datasheet should specify the dominant wavelength (λd) in nanometers (nm), representing the peak emission of the LED. Typical green LEDs have dominant wavelengths ranging from 550nm to 570nm. The spectral distribution curve, also found in a complete datasheet, shows the intensity of light emitted across the entire visible spectrum. This curve is crucial for applications requiring specific color rendition or color mixing.
Other critical optical parameters include:
* Luminous Intensity (Iv): Measured in candelas (cd), this parameter indicates the brightness of the LED at a given forward current. The datasheet will provide this value at a specified test current (e.g., 20mA). Higher luminous intensity translates to brighter illumination.
* Viewing Angle (θ1/2): This parameter specifies the half-power angle, representing the angle at which the luminous intensity falls to half its maximum value. A wider viewing angle means the LED is visible over a larger area. Typical values for 5mm LEDs range from 20° to 40°.
* Radiant Intensity (Ie): Measured in watts per steradian (W/sr), this represents the power emitted per unit solid angle. This parameter is less commonly used than luminous intensity but is essential for some specialized applications.
* Color Coordinates (x, y): These coordinates, based on the CIE 1931 color space, precisely define the color of the emitted light. They provide a more accurate representation than simply stating "green."
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