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Where are SMD LEDs used?

May. 06, 2024

SMD VS COB LED: what are their differences - COLBOR

LED lights come in a variety of types. Among them, COB and SMD LED gain great popularity. And here comes the question, SMD VS COB LED, what are the differences?

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Key difference in SMD and COB LED components

*SMD LED construction

SMD LED, which stands for Surface Mounted Device LED, is the most common LED in the market. The LED chip is permanently fused to a printed circuit board, making it a versatile electronic component. It finds application in light bulbs, string lights, and even phone notification lights.

SMD LED chips vary in size. For instance, the SMD LED 5050 is 5mm wide, while the SMD 3528 is 3.5mm wide. Thus, SMD chips are compact and resemble flat, square computer chips.

*COB LED construction

COB, or Chip On Board, LED technology represents a recent advancement in LED lighting, promoting more effective energy use. Similar to SMD chips, COB has several diodes on the same surface but features more diodes, typically nine or more. This configuration gives COB LEDs a panel-like appearance, with only one circuit and two contacts.

Other differences in characteristics

Brightness

When comparing SMD and COB LEDs in terms of brightness, the difference lies in the lumen output. While LED lights generally offer brighter illumination compared to other light sources, the specific lumen output varies between different LED types. COB LEDs typically provide at least 80 lumens per watt, whereas SMD LEDs range from 50 to 100 lumens per watt.

Energy efficiency

Both SMD and COB LEDs are highly energy-efficient, making them popular for their cost-saving benefits compared to traditional filament bulbs. However, energy efficiency depends on the lumens used: the higher the lumen output, the greater the energy efficiency.

Color temperature

SMD LEDs are more adaptable and offer a wider range of color and color temperature options. By using different primary colors—red, green, or blue—SMD LEDs can create a varied color palette. In contrast, COB LEDs are limited in color modification but provide more stable lighting with a single color and temperature.

Quality of light

The quality of light differs between SMD and COB LEDs due to their diode configurations. SMD LEDs can produce a glare and are suited for point lighting. Conversely, COB LEDs emit uniform, glare-free light with a wide-angle beam, making them ideal for surface lighting applications.

Cost

The cost of SMD and COB LED technologies varies based on manufacturing processes. Generally, SMD LEDs have higher production costs due to more complex labor and manufacturing requirements. COB LEDs save roughly 5% on manufacturing costs because of simpler production processes.

Table: Differences to consider when deciding which to use

Type

Brightness

Color temperature

Using

Cost

COB

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≥80 lumen per watt

Unchangeable

Surface light

5% less

SMD

50 to 100 lumen per watt

Changeable

Point light

Higher

When to use: the difference determines

LED lights play an important part in our daily life, especially in photography and architectural lighting. When deciding between SMD and COB LEDs, which one is more suitable? Let’s explore.

Photography

COB LEDs are commonly used in LED video lights for photography due to their luminous uniformity and wide beam angle. For instance, the COLBOR CL100 is a 100W COB LED light that provides consistent output in bi-color temperature, ideal for reducing setup time and ensuring high-quality mobile filming.

Architecture

In architectural lighting, COB LED chips are used in complex lighting applications for better beam angles and aesthetics. SMD LEDs, on the other hand, are used in general lighting fixtures like diffused panel lights, offering versatile lighting solutions.

Conclusion

The differences between SMD and COB LEDs include brightness, color temperature, and manufacturing costs. Understanding these distinctions will help you select the ideal LED light for video shooting and other uses.

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