LED light source specification terminology
First, the size of the LED refers to the physical dimensions of the LED components used in LED light strips. Common sizes include 0603, 0805, 1210, and 5050, which are typically measured in either imperial (inch) or metric units. Here's a detailed breakdown:
0603: This is an imperial designation, equivalent to 1005 in metric. It means the LED has a length of 1.0 mm and a width of 0.5 mm. The 0603 is commonly used in small-scale LED applications due to its compact size.
0805: In metric, this corresponds to 2125. The LED measures 2.0 mm in length and 1.25 mm in width. It’s slightly larger than 0603 and offers better brightness for moderate lighting needs.
1210: This is equivalent to 3528 in metric, with dimensions of 3.5 mm by 2.8 mm. It's often used in high-brightness LED strips and provides a good balance between size and performance.
5050: This is a metric size, measuring 5.0 mm by 5.0 mm. It’s one of the most common sizes for high-output LED strips, especially in commercial and industrial lighting applications.
Second, the number of LEDs on a strip—such as 15, 30, or 60 per meter—indicates how densely the LEDs are packed. For example, a 1210 LED strip usually contains 60 LEDs per meter, while a 5050 strip may have 30 or even 60 LEDs depending on the design. More LEDs generally mean higher brightness but also a higher price. This factor plays a major role in determining the cost and performance of the LED strip.
Third, color temperature refers to the hue of the light emitted by the LED. It is measured in Kelvin (K) and determines whether the light appears warm, neutral, or cool. A lower color temperature (below 3300K) produces a warm, reddish glow, ideal for creating a cozy atmosphere. A medium range (3000–6000K) gives a neutral white light, suitable for general use. A higher color temperature (over 6000K) creates a cool, blue-white light that can feel more energizing but less comfortable in living spaces.
Fourth, brightness is measured in candelas (cd), with milli-candela (mcd) being the most common unit for LEDs. Higher mcd values mean brighter lights, which is essential for applications requiring strong illumination. However, higher brightness often comes at a higher cost due to the need for more advanced LED chips and packaging techniques.
Fifth, the beam angle refers to the spread of light emitted by each LED. Most standard SMD LEDs have a beam angle of 120 degrees, offering a wide coverage area. A wider angle improves the uniformity of light distribution but reduces the intensity. Conversely, a narrower angle increases brightness but limits the coverage area. Some manufacturers may reduce the beam angle to make the light appear brighter, which can be misleading. Always check the specifications carefully when selecting LED strips.
Sixth, the voltage requirement is another important specification. Most LED strips operate on DC 12V, although some models use 24V for longer runs or higher power applications. Always ensure the power supply matches the required voltage to avoid damage to the LED strip.
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