DIP / SMD / COB LED

 

Since LED lighting was invented, it has evolved overtime to become one of the cost effective and energy efficient lights around. Today there are more than one model of LED technology is available in the market. LED technologies like DIP, SMD, COB LEDs are created with unique features ideal for different applications.

DIP LED:

DIP ( Dual-in-Line-Package) LEDs are traditional LED lights. They look the most like a traditional light with chip encased in a hard plastic cylindrical body and a spherical top generally used with straight parallel connecting pins.

Each DIP LED has a single chip and semiconductor die that emits light when supplied with electricity. Each DIP LED is only capable of producing one color. That is why it is commonly combined with the other two differently colored DIP LEDs to achieve the RGB ( red, green , blue ) color scheme.

This type of LED produces around 4 lumens per single LED, and input power is 5V to 12V. The eam angle of DIP LED reaches 60 degree.

The DIP LED technology is suitable for harsh environments. It is protected with hard Epoxy case and a circuit board that gives additional resistance against impacts.

DIP LEDs are heavier than other LED types, making them unsuitable for LED displays with smaller pixels.

DIP LED can help you to save energy upto 80% compared to traditional lights like fluorescent bulbs.

DIP LED is commonly used as a light indicator for many electronics and home appliances like computers, television sets, dashboards etc. DIP LEDs are also used for decorative purposes.

SMD LED:

SMD stands for Surface Mounted Diode and are much smaller and efficient LEDs than DIP chips. They are popular due to their versatility and are typically mounted and soldered onto a circuit board. In an SMD module, the three colors of LED bulbs are encapsulated into one slim case which is directly soldered onto a circuit. The red, green and blue LEDs are visually regrouped into a single point, producing either the color black, or white. This point is either a circle or a square, which has a diameter of just a few millimeters. These modules can be made to as small as 1mm in size. 

 

Because these diodes are mounted onto only one surface on the board, they are small and can be placed closer together. Closer placement results in a much higher resolution as compared to DIP modules.

It can produce 50-100 lumens per watt.

SMD LEDs are labelled with 4 digit number. And number represents size of LED. First 2 digit refer to LED module length, last  2 digits refer to the height. Measurement are 10th of the millimetre. SMD 3535 measures 3.5mm(L) x 3.5mm(H).

SMD LEDs are flat that allows you to have a light & nice looking appearance.

SMD modules are lightweight, have a much wider viewing angle and are more energy efficient.

SMD requires a circuit for each diode included in the chip.

Combination of LEDs over small area also produces certain amount of heat, to maintain long life of LEDs this heat has to be dissipated.

COB LED:

COB (Chip On Board) LED has 3 LED chips (each RGB color) directly soldered on an LED substrate. Multiple LEDs embed within the inner substrate to produce one LED module.

With COB package design, LED chip looks like one LED lighting panel rather than multiple LED lights put together. COB LED chips can occupy less space but still achieve highest potential.

The COB technology offers higher reliability, as process does not require any supports and brackets, which as a result reduces failure. The COBLED display is more resistant to humidity, dust, rust, & moisture.

COB LED supports direct attachment to heat sink, without attaching to PCB circuit board, results in better heat dissipation.

COB chips can offer a much higher amount of lumens, often be well over 100 per watt.

COB LEDs offer a wide range of applications, various lamps such as street lights, downlights, spotlights, and other electronic devices such as cameras and smartphones.

Overall, the COB LEDs have high power light-emitting diodes, which give you higher  light efficacy and lighting effect. Overtime, there is minimal light loss as COB LEDs do not need the other lenses and packaging style.

The COB LED’s color uniformity is less than that of the SMD LED.

Since the creation of the COB chips, a variant has appeared called MCOB or “Multiple Chip On Board”. It is multiple COB chips together in series.


 



 


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