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When buying COB LED strip lights from a China LED strip light manufacturer, many are familiar with both COB LED strips and standard LED strips, but few truly understand their differences and benefits. KayTai can assist in choosing the ideal type of lighting to meet the needs of your project — our staff has all of the knowledge about COB and SMD LEDs needed for selection. See our SMD LED guide and the COB LED trakovi catalog for more.
Article Guide
1. Differences Between COB and SMD LED Strips
The COB chip connects directly to a PCB board, eliminating lamp bead frames, solder points and golden wires found in traditional SMDs. What are COB LEDs? COBs (also referred to as flip-chips) are LEDs in which their chip is directly attached to a PCB board for maximum flexibility and space efficiency.
What are the advantages of COB? There are various advantages associated with using a COB:
Even Light Source
COB LED strips feature an even light source, unlike the bright dots you find with SMD strips, meaning their light will not be as harsh on the eyes. Normal SMD flex strip hotspots are visible to the naked eye when light is near to or on top of their surfaces. Conversely, the COB strip emits an attractive yet steady light source all along its length.
Greater Flexibility
COB strips offer greater flexibility due to their small size and uniform light distribution. As these light strips will not pop out as often, COB strips make for easy placement into tight spaces.
Greater Stability
COB strips employ three chips that operate in series: two parallel chips in each group and a final group arranged so as to produce light even if two or three fail.
Wide Emitting Angle
COB LED lights illuminate a wider area than SMD strip lights due to a 180-degree beam angle, as opposed to 120 degrees for SMD strip lights.
COB strips are perfect when: you cannot conceal the strip easily; light bars should be placed no further than 2 feet from any illuminated surface; granite and glass surfaces present the ideal opportunities; or apply the neon effect wherever it suits.
2. Advantages of Tunable White LED Lighting
No matter where you install LED lights, eventually it is beneficial to modify their settings based on your individual moods — cooler lights may help enliven daytime activity while warmer hues will help relax you at nighttime. Lighting controls are useful tools, as they give users more options to control lighting in different ways.
Circadian Rhythm
Your circadian rhythm is your body clock; your body knows when and how to wake up and rest. Cool and warm LED lighting can help regulate this rhythm — choose bluish white light during the daytime for work purposes, or warm, soft illumination after sundown for relaxation and sleep.
Cost-Effective and Attractive
Tunable white LEDs are both cost-effective and visually pleasing, boasting excellent quality for less money.
Increase Productivity
Their bluish-white light creates an engaging work and study environment for employees and students alike.
Create a Peaceful Environment
Restaurants can use warm lighting to create an ambiance conducive to relaxation. In hospitals, warm lighting can help patients feel more at ease and sleepy.
3. What Is SMD (Surface-Mounted Device)?
An SMD is a surface-mounted package containing an LED. SMD LED packages consist of a plastic case containing both phosphor material and an LED chip made from a semiconductor material that emits blue light, while some of this light is converted to green and red wavelengths by the phosphor material in order to produce white light from these combinations.
Higher Power and Efficiency
SMD LED strips come in an assortment of power options from 5W–40W. Some can produce up to 180lm/W.
Extended Lifespan
SMD LEDs typically last over 100,000 hours — twice that of their COB counterparts. SMDs come with money-back guarantees, while COB LEDs do not. Furthermore, an LM80 report is usually provided.
Wide CCT Selection
SMDs come with an impressive selection of CCT (Kelvin temperature). Their 1800K and 2000K varieties are popular choices; other available levels include 2200K, 2440K, 2670K, 3000K, 3500K, 4000K, 5000K and 6000K.
CCT & SDCM
SMDs keep excellent color consistency that can reach up to three SDCM.
Improved CRI Ratings
A COB can achieve CRI ratings of 90+, while SMDs may reach 95+.
Heavy Copper PCB
SMD LEDs are more resilient due to the 3oz copper present on printed circuit boards.
4. Disadvantages of SMD LEDs
Narrow Beam Angle
SMDs tend to produce narrower beam angles compared to COBs.
Hot Spot
A standard 60/120 LED/m strip will display a visible spot.
5. COB LED Strip Color Options
Color choices of COB LED strips for LED lighting applications range from white and red/green, through blue/yellow/orange, to RGBWWW (red-green-blue) with CRI greater than 90 and various color temperatures (2700K and 3000K).
6. IP-Rated COB LED Strips
IP20 – No Waterproofing
This lamp should only be used indoors; for example, in your living room, bedroom or cabinet.
Silicone Sleeve IP65
These COB LED strips feature an IP65 waterproof rating, making them suitable for outdoor use in damp locations without risking submersion in water.
IP68 Silicone Sleeve + Silica Gel
This COB LED light features an IP68 silicone sleeve filled with silica gel for submergibility into water environments.
7. Can COB LED Strips Be Dimmed?
As with regular SMD strips, COB LED strips can also be dimmed by using DALI or Triac dimming supplies and/or 0-10V power supplies to dim them.
8. COB LED Strips: Alternative Solutions
There are other available alternatives to COB strips. KayTai offers high-density LED strip light options with up to 700 LEDs/meter density for optimal output. LED profiles can help enhance the SMD LED strip lighting effect by acting as diffusers to minimize unwanted lighting dots. They are also great at dust prevention and heat dissipation — while even helping extend their lifespan! See our LED aluminum profile buying guide.
Our thoughts on COB LED strips: for creating light effects without hot spots, COB LEDs may be your ideal solution. SMDs offer brighter lights with more consistent hues but tend to last longer due to being made up of multiple lights in a series.
9. Conclusion
Before selecting an LED manufacturer, it is essential that you consider several criteria when making your selection. Look for companies offering top-quality products at fair prices while providing outstanding customer support — this way your LED manufacturer can meet all of your lighting needs! KayTai offers superior LED strip lights. Our focus lies on helping our clients reduce costs while offering the best support possible.
COB or SMD? We’ll Help You Choose
Tell us your project needs — brightness, beam angle and budget — and our team will recommend the ideal COB or SMD strip with factory-direct pricing.
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