But the difference between LED light COB and SMD is that COB LEDs have more diodes. … COB is known for better lumen-per-watt ratios and heat efficiency. This has a lot to do with the design of COB LEDs, and the cooling ceramic substrate of the chips.
Why are COB LEDs better?
Advantages Of COB LED Chips
These are the biggest advantages of COB LEDs for growing: Higher light density: many small diodes in a tight space makes for a much higher light density, meaning you need less space to produce more light.
What is the difference between LED and cob?
The SMD LED light source is a single patch LED lamp bead with a light-emitting diode directly attached to the surface. COB LED light source packaging technology is a direct chip package on the board, COB has improved light efficiency, improved glare effect of LED lights, and reduced light loss.
Are cob grow lights better?
Better light spread: since COBs are usually placed fairly far apart on large fixtures, they cover the plants below more evenly than a smaller light fixture that has to spread out from a central point. Efficiency: COBs give you more power per input watt and also product less heat.
What does COB mean on LED lights?
Relatively new to the LED market, chip on board (COB) LEDs offer many advantages over the standard options. COB LEDs are basically multiple LED chips (typically nine or more) bonded directly to a substrate by the manufacturer to form a single module.
Which is better Cree or COB LED?
The CREE LED lighting system has a larger size and a PCB area that is wider than its COB counterpart. Both of the LEDs generate large quantities of heat when they are both being used. … By being wider and bigger, CREE can dissipate a higher volume of heat into its environment. This simply means that it is longer-lasting.
How long do COB LEDs last?
Even if the initial investment is higher, a quality LED fixture will last AT LEAST 30,000 hours. So it’ll pay itself off over time.
Do COB LED need heatsink?
In the case of COB LEDs, it is possible to directly attach a COB LED to a heat sink (see Figure 2). As a result, COB LEDs do not require PCBs in order to install LEDs into a luminaire and the subsequent reflow process is no longer necessary.
What is COB LED chip?
Chip-on-Board or “COB” refers to the mounting of a bare LED chip in direct contact with a substrate (such as silicon carbide or sapphire) to produce LED arrays. COB LEDs have a number of advantages over older LED technologies, such as Surface Mounted Device (“SMD”) LEDs or Dual In-line Package (“DIP”) LEDs.
Which is better SMD or LED?
One of the biggest improvements is that SMD spotlights offer a higher lumen output for a lower energy consumption – making them more powerful and energy efficient than older LED lights. This is because they work on the principle that fewer and larger SMD LEDs produce a greater lumen output.
How hot do COB lights get?
The only data sheet I can find for these generic Chinese LED’s shows a max temp of 80 Deg C (176 F). I’m getting temps far higher than that. Possibly the LED’s are really efficient and pump out most of their power as light. Maybe I should be asking what the efficiency of an LED is.
Are COB LED lights dimmable?
Dim-to-Warm is COB LED which works like halogen lamp when dimmed. Its specialty is that when you dim it the color temperature gets warmer. Usually dimming does not affect the color temperature of the LED. … It’s perfect for space where you want to have dimmed and warm toned atmospheric lighting.
How far should my LED grow light be from my plant?
During the flowering stage LED Grow lights should be located between 16-36 inches from the plant canopy. Moving the grow light closer will increase the light intensity which can maximize photosynthesis.
Do COB LEDs need drivers?
To do it correctly, you use a constant current driver for each CoB or get as driver that with a high enough voltage (e.g. 80v or more) to drive them all in series with one driver. … Your supply is a constant voltage supply. They do not work well with LEDs.
Which brand of LED lights are the best?
The Best LED Light Bulbs on Amazon, According to Hyperenthusiastic Reviewers
- Sunco Lighting 6W Dimmable G25 LED Vanity Light Bulb Warm White 3000K (10 Pack) …
- AmazonBasics 25 Watt Equivalent, Clear, Non-Dimmable, A19 LED Light Bulb, 6-Pack. …
- Philips Hue A19 LED Smart Bulb.
9 апр. 2020 г.
How do you test a COB LED?
- Plug your black lead into the common input, and plug your red lead into the input marked with a “V” (voltage), “Ω” (resistance), or ANYTHING but an “A”. The input marked “A” is for measuring amperage, or current. …
- Switch your dial to DC Voltage, which is what LED drivers put out.
4 нояб. 2016 г.