It is mainly a representation of the specifications and dimensions: 35mm * 28mm, 50mm * 50mm are different in size, and the power is also different. In the application of the patch, 3528 has no 5050 advantage in terms of brightness or life, same.



Basic knowledge of LED test technology

Forward voltage: The voltage drop between the two poles when the forward current through the LED is a certain value.

Reverse current: when the reverse voltage applied across the light-emitting diode is a certain value, the current flowing through the light-emitting diode

Peak wavelength: The wavelength at which the spectral radiant power is at its maximum.

Half-intensity angle: In the distribution of luminous (or radiant) intensity, the angle formed by the luminous (or radiant) luminous intensity being greater than or equal to half of the maximum intensity.
Dominant wavelength: Any color can be regarded as being matched and matched with a reference light source (such as CIE standard light source A, B, C, etc., isoenergetic light source E, standard illuminant D65, etc.) in a certain proportion by a certain spectral color Color, this spectral color is the dominant wavelength of the color. The dominant wavelength of a color corresponds to the hue (psychological amount) of the color as observed by the human eye. If the chromaticity coordinates of the tested LED device have been obtained, an isoenergetic white light E light source (x0 = 0.3333, y0 = 0.3333) can be used as a reference light source to calculate the dominant wavelength that determines the color. During the calculation, according to the slope of a straight line connecting the reference light source chromaticity point and the sample color chromaticity point on the chromaticity diagram, a table is read to read the intersection of the straight line and the spectral trace to determine the dominant wavelength.

Average intensity: The ratio of the luminous flux dΦv contained in a small solid angle element of a light source in a given direction to this solid angle dΩ is in candela (cd)

Radiation bandwidth: The wavelength interval at which the spectral radiant power is greater than or equal to half the maximum value.



What are the uses of 3528 and 5050 SMD LEDs?

3528, 5050, are the finished lamp size of SMD surface mount LED package. Use size for name.

Compared with DIP lamps, surface-mount SMD lamps have lower brightness, but are easier to maintain and have a larger viewing angle. Therefore, almost all indoor LED displays are SMD SMD LEDs.

LED flexible light bar 5050

5050 is the model of LED package. Named after the size specification. Refers to 5050 type LED lamp beads.

What does compatible piranha 02.03.04 mean? What is SMD?

How high-power piranhas are composed of SMD chips, 02.03.04 is the model of the LED bracket.

The abbreviation of SurfaceMountedDevices means: SMD is the unified model of the product. For example: TOP, Chip, can all become SMD, which is a flat package.

SMD chips are a bit general, and they use 5050 or 3528 chips to make piranhas.

Of course, there are many different chip sizes. Commonly used to make SMD sizes ranging from 7 × 9mil--24 × 10mil.

High power is: if the voltage exceeds 0.5W, it can be called high power.