24V DC LED strips: high density, CRI 98 and COB flip chip for professional installations without voltage drop
24V DC LED strips operate on 24V DC continuous voltage and allow considerably longer runs without any drop in light, because that 24V DC voltage keeps the luminous flux stable in professional linear lighting installations.
Why choose 24V DC LED strips over 12V
At equivalent power, doubling the supply voltage circulates half the current through the printed circuit, a circumstance that reduces heating and extends the usable run.
Greater length with no voltage drop
A 24V LED strip with no voltage drop maintains an identical illumination level from the first to the last metre, because the accumulated resistance is proportionally lower. The voltage drop length calculation rule determines that the 24V LED strip maximum length per run reaches 5 metres feeding from one end and 10 metres feeding simultaneously from both, a distribution that avoids perceptible drops in the final section.
Greater colour stability and efficiency
With less current circulating, the semiconductor junction operates at a lower temperature and the tonality remains stable. The choice of fixed colour temperature vs CCT depends on the application, since a 24V LED strip with selectable CCT covers a temperature range from warm white to cool white, approximately 2700 to 6500 kelvin.
High density SMD2835 models available
The high density SMD2835 LED chip constitutes the most widespread reference in professional installation, and a high density SMD2835 24V LED strip provides between 1680 and 2800 lumens per metre.
120 LED per metre for general use
The 120 diode model consumes 12 watts per metre, delivers 1680 lumens and allows sectioning every 5 centimetres, so it represents the most adjusted 24V LED strip price alternative in the range. The 24V LED strip 5 metres IP20 format is restricted to interior installations because its IP protection proves insufficient against dust and water.
182 and 238 LED per metre for maximum luminosity
The 24V LED strip with 238 LED per metre reaches 2800 lumens consuming 20 watts and permits sectioning every 2.5 centimetres, so whoever requires a 24V LED strip with high luminosity 14000lm must necessarily resort to that reference in a 5 metre reel.
| Model | Diodes/m | Consumption | Flux |
| SMD2835 | 120 | 12 W/m | 1680 lm/m |
| SMD2835 | 182 | 16 W/m | 2240 lm/m |
| SMD2835 | 238 | 20 W/m | 2800 lm/m |
| COB CRI 90 | 320 | 12 W/m | 1200 lm/m |
| CRI 98 | 140 | 11 W/m | 1600 lm/m |
COB 24V LED strips with continuous light and no dots
The COB flip chip continuous light eliminates the dotting characteristic of the SMD encapsulation, so that the COB 24V LED strip flip chip is perceived as a continuous luminous line even dispensing with the diffuser.
320 LED per metre flip chip
The COB 24V LED strip with 320 LED per metre provides 1200 lumens consuming 12 watts and is supplied in a 10 metre reel.
Applications in profiles and display cabinets
The aluminium profile thermal dissipation proves indispensable in COB configurations exceeding 12 watts per metre. In the LED strip installation of commercial display cabinets the profile conceals the solderless 24V LED strip connector, which interconnects sections without soldering and keeps the decorative lighting clean.
CRI 98 strips for maximum chromatic fidelity
The model with 140 diodes and 11 watts per metre reaches CRI 98 maximum chromatic fidelity providing 1600 lumens with a 180 degree aperture. It answers the search for 24V LED strip CRI98 Elite and constitutes the reference demanded by the lighting professional in museums and jewellers, while the 24V LED strip for high end kitchen furniture uses an identical configuration.
Compatible 24V power supplies
Every 24V LED strip power supply must be dimensioned 20 per cent above the real consumption, multiplying the installed metres by the watts of each metre and increasing that result. The GXtronic IP20 power supply of 100 watts feeds up to 4 metres of the 238 diode model, and no reference admits direct connection to 230 volts.
PWM and 0-10V dimming
The PWM 0-10V intensity regulation modifies the brightness by interrupting the supply thousands of times per second, a procedure that does not alter the perceived colour temperature. A PWM dimmable 24V LED strip requires a controller interposed between the supply and the strip, since the PWM controller regulation type constitutes the standard for fixed tonality strips. In a professional 24V LED strip pack it is advisable to maintain the same range.
Complete the installation with the 24V power supplies and with the LED aluminium profiles, which protect the strip and carry the heat away.
Frequently asked questions about 24V DC LED strips
How many metres of 24V LED strip can I connect to a 100W power supply?
With the 12 watt per metre reference you can feed approximately 6.5 metres respecting the 20 per cent margin. With the 20 watt configuration that limit descends to 4 metres.
What is the difference between COB and SMD 24V LED strip?
The COB incorporates the diodes beneath a continuous phosphor layer and generates no perceptible dots, whereas the SMD mounts separate encapsulations and provides greater performance in lumens per watt.
What CRI do I need to illuminate a jewellery display cabinet?
CRI 98 constitutes the adequate value because it reproduces reds and metallic highlights without appreciable deviation. The 140 diode model reaches that figure providing 1600 lumens per metre.
Do 24V LED strips need an aluminium profile?
Beyond 12 watts per metre it proves indispensable, because the aluminium evacuates the heat and keeps the luminous flux constant. Nor should you switch on LED strips while they are still coiled, because the accumulated heat cannot dissipate.
Can 24V LED strips be dimmed with a dimmer?
Yes, using a PWM controller interposed between the power supply and the strip. A 230 volt wall regulator connected directly to the supply may provoke flickering.