What are the differences between normal LED and COB LED?

To start, it’s necessary to have a fundamental grasp of Surface-Mounted Device (SMD) LEDs. They are unquestionably the LEDs that are used the most frequently right now. Due to its versatility, even in the smartphone notification light, the LED chip is firmly fused to a printed circuit board and is employed widely. One of the most distinctive characteristics of SMD LED chips is the number of connections and diodes.
On SMD LED chips, it is possible to have more than two connections. Up to three diodes with individual circuits can be found on a single chip. Each circuit would have an anode and a cathode, resulting in 2, 4, or 6 connections on a chip.

Differences between COB LEDs and SMD LEDs.

On a single SMD LED chip, there can be up to three diodes, each with its own circuit. Each circuitry in a chip of this kind has one cathode and one anode, resulting in 2, 4, or 6 connections. COB chips typically have nine diodes or more. Furthermore, COB chips have two connections and one circuit regardless of the quantity of diodes. Due to this simple circuit design, COB LED lights have a panel-like look, whereas SMD LED lights would appear to be a collection of tiny lights.

A red, green, and blue diode could be present on the SMD LED chip. By changing the output level of the three diodes, you may produce any hue. On COB LED lights, however, there are only two contacts and one circuitry. It is impossible to use them to make color-changing lights or bulbs. Multiple channel adjustments are required to get the color-changing effect. As a result, COB LED lights work well in applications requiring a single hue but not several colors.

SMD chips have a well-known brightness range of 50 to 100 lumens per watt. The great heat efficiency and lumens per watt ratio of COB are well known. COB chips could emit more lumens with less electricity if they have at least 80 lumens per watt. It can be found in many different types of bulbs and devices, such as the flash on your phone or point-and-shoot cameras.

A smaller external energy source is required for SMD LED chips, while a larger external energy source is required for COB LED chips.

Post time: Jan-10-2023