DC12/24V SMD Strip

DC12/24V SMD strip refers to a type of LED strip that operates on a direct current (DC) power supply of either 12 volts (V) or 24 volts (V).

SMD (Surface Mount Device) refers to the packaging technology used for the individual LEDs on the strip. In SMD LED strips, the LEDs are mounted directly onto a flexible circuit board and connected in series or parallel configuration.

The DC voltage requirement of 12V or 24V indicates the specific power supply needed to operate the SMD strip. These voltage options are commonly used in low-voltage lighting systems for various applications, including residential, commercial, and automotive lighting.

The choice between a 12V or 24V SMD strip depends on several factors:

Power Supply: The selection of the appropriate voltage depends on the power supply available for the lighting system. If the existing power supply is 12V, a 12V SMD strip would be suitable. Similarly, if the power supply is 24V, a 24V SMD strip would be compatible.

Length and Brightness: Longer LED strip lengths generally require higher voltages to maintain consistent brightness throughout the entire length. If you need a longer strip with higher brightness levels, a 24V strip may be preferable as it can support longer runs without significant voltage drop.

Wiring Considerations: Higher voltage strips often have less voltage drop over extended distances, which means they can be installed further away from the power source without experiencing noticeable brightness reduction. This can simplify the wiring layout and reduce voltage drop-related issues.


1、Can 12V LED strip run on 24V?

Running a 12V LED strip on 24V can potentially damage the LED strip and result in permanent failure. LED strips are designed to operate within specific voltage ranges, and exceeding those limits can lead to overdriving the LEDs and causing them to burn out.

Here’s why using a higher voltage than the specified rating is not recommended:

Overvoltage Stress: Applying double the rated voltage can lead to excessive current flowing through the LED chips, generating excess heat and potentially damaging them. This can significantly reduce the lifespan of the LEDs or cause immediate failure.

Increased Heat Generation: LED strips are designed with specific electrical and thermal characteristics in mind. When operating at a higher voltage, the LEDs may generate more heat than they are designed to handle. This can result in overheating, reduced efficiency, and potential safety hazards.

Color and Brightness Variation: Overdriving LEDs can also impact their color accuracy and brightness. The LEDs may appear dimmer, have inconsistent illumination, or even emit different colors than intended.

To ensure proper operation and longevity of your LED strip, it’s crucial to use the correct voltage as specified by the manufacturer. If you have a 24V power supply and a 12V LED strip, you will need a step-down voltage converter (also known as a voltage regulator or transformer) to match the voltage requirements of the LED strip.

Using the appropriate power supply that matches the voltage requirements of the LED strip will help maintain its optimal performance, protect against damage, and ensure safe and reliable operation.

2、Which is better 12V or 24V LED strip?

The choice between a 12V or 24V LED strip depends on several factors, including the specific application and requirements. Here are some considerations to help you determine which option might be better for your situation:

Voltage Drop: Longer LED strip runs can experience voltage drop, where the brightness diminishes towards the end of the strip. Higher voltage strips, such as 24V, tend to have less voltage drop compared to 12V strips. If you need to cover longer distances or require uniform brightness throughout a lengthy installation, a 24V LED strip may be preferable.

Power Supply Availability: Consider the power supply options available to you. If you have a 12V power supply readily accessible, using a 12V LED strip would be more convenient. Similarly, if you have a 24V power supply on hand, opting for a 24V LED strip would be simpler.

Flexibility and Installation: 12V LED strips are generally more flexible due to the lower voltage requirement. They can be easier to bend around corners, maneuver through tight spaces, and conform to irregular shapes. If your installation requires a great deal of flexibility or involves intricate designs, a 12V LED strip might be more suitable.

Compatibility with Accessories: It’s important to consider the compatibility of accessories such as controllers, dimmers, and power supplies. Some accessories are designed specifically for either 12V or 24V LED strips, so ensure that your chosen voltage aligns with the accessories you plan to use.

Availability and Cost: In general, 12V LED strips are more widely available and tend to be more affordable compared to 24V strips. The popularity and prevalence of 12V systems result in a broader range of options and potentially lower costs.

3、What is the difference between dc12v and dc24v?

The main difference between DC12V and DC24V lies in the voltage level they represent:

Voltage Level: DC12V refers to a direct current (DC) electrical system operating at 12 volts, while DC24V represents a system operating at 24 volts. The voltage determines the amount of electrical potential or energy available for powering devices.

Power Handling Capacity: DC24V systems have twice the voltage of DC12V systems. As a result, DC24V systems generally have higher power handling capacity, allowing them to support more demanding applications that require greater wattage. This can be advantageous when driving longer LED strip runs, high-powered lights, or other devices with higher voltage requirements.

Voltage Drop: One significant advantage of DC24V systems is reduced voltage drop over extended distances compared to DC12V systems. Voltage drop occurs when there is a decrease in voltage along the length of a wire or circuit due to resistance. With a higher voltage level, DC24V systems experience less voltage drop, making them suitable for installations requiring long cable lengths or maintaining consistent brightness across extended LED strip runs.

Safety Considerations: In general, higher voltages can pose a slightly higher risk of electric shock. While both DC12V and DC24V are considered low-voltage systems, it’s important to handle electrical components and wiring with appropriate caution and adhere to electrical safety guidelines regardless of the voltage level.

Component Availability and Compatibility: DC12V systems are widely used and often more readily available compared to DC24V systems. There may be a broader range of components, such as power supplies, controllers, dimmers, and accessories specifically designed for DC12V applications. However, availability can vary depending on the specific industry or application.

When choosing between DC12V and DC24V, consider factors such as the power requirements of your devices, the distance over which the electrical current needs to travel, the specific application, and the availability of compatible components. It’s important to ensure that the chosen voltage aligns with the requirements of your devices and the electrical system you are working with.

4、What gauge wire for 24V LED strip?

The gauge (thickness) of wire you should use for a 24V LED strip depends on several factors, including the length of the wire run and the total current draw of the LED strip. Here are some general guidelines:

Current Draw: Determine the total current draw of your 24V LED strip. This information is typically specified by the manufacturer and is measured in amps (A). Make sure to consider the current requirements of the entire LED strip, including all segments if applicable.

Wire Length: Consider the distance between the LED strip and the power source. Longer wire runs can result in voltage drop, which can affect the performance of the LED strip. To minimize voltage drop, it’s generally recommended to use thicker wires for longer runs.

Wire Gauge: Based on the total current draw and wire length, refer to an ampacity chart or wire gauge table to determine the appropriate wire gauge. The ampacity chart will help you identify the minimum wire gauge required to safely carry the current without excessive voltage drop.

As a rough guideline, for shorter runs (up to a few meters), a 20 or 18 AWG (American Wire Gauge) wire may be sufficient, depending on the current draw. For longer runs or higher current loads, you might need thicker wires, such as 16 AWG or even 14 AWG, to minimize voltage drop.

Keep in mind that local electrical codes and regulations may also impose specific requirements for wire gauges in certain applications. It’s always advisable to consult with an electrician or refer to relevant standards and guidelines to ensure compliance and safety.

Additionally, when using wire for LED strip installations, consider using stranded copper wire instead of solid core wire. Stranded wire offers better flexibility, making it easier to work with and route around corners or within tight spaces.