A Light Bar – Round Series, also known as a Round LED Light Bar or Circular LED Indicator, is an LED display component used for simple visual indication in electronic products, industrial equipment and control panels.
Unlike numeric displays, dot matrix displays or bar graph displays, a round light bar is mainly used to provide a clear illuminated circular indication. It helps communicate status, signal, operating mode, warning condition, equipment function or panel activity through a simple visual format.
Alfa Electronic Components supplies Round Series LED Light Bars for industrial electronics, embedded systems, machine panels, electronic instruments, control panels and custom LED display assemblies. The range includes multiple circular body sizes for different PCB layouts, panel openings and visibility requirements.
Round LED Indicator Format
The round format gives the indicator a clean, familiar and easily recognisable appearance on equipment panels. It is suitable where the product design needs a circular illuminated indicator instead of a square, rectangular, numeric or text-based display.
This format can be used to indicate:
- Power status
- Machine status
- Signal condition
- Operating mode
- Warning indication
- Active/inactive function
- Equipment condition
- Control panel status
- Process status
- User interface indication
The final indication style depends on the selected model, LED color, circuit design and panel arrangement.
Available Round Light Bar Sizes
The range includes nine body sizes:
- Ø 10 × 8 mm
- Ø 11.5 × 8 mm
- Ø 15 × 8 mm
- Ø 18 × 8 mm
- Ø 22 × 10 mm
- Ø 25 × 12 mm
- Ø 35 × 15.5 mm
- Ø 42 × 16.5 mm
- Ø 52 × 15 mm
The smaller sizes such as Ø 10 mm, Ø 11.5 mm and Ø 15 mm are suitable for compact PCB-mounted indicators and small equipment panels.
The medium sizes such as Ø 18 mm, Ø 22 mm and Ø 25 mm are suitable for control panels, electronic instruments and industrial equipment interfaces.
The larger sizes such as Ø 35 mm, Ø 42 mm and Ø 52 mm are useful where the indicator must be more visible or where a larger circular illuminated area is required.
Suitable for Status and Signal Indication
Round LED Light Bars are commonly used where a simple and highly visible indication is required without displaying numbers, letters or graphics. They are suitable for equipment status, signal condition, process indication, warning display and operator interface applications.
Their circular shape makes them useful for front-panel indicators, function indicators, signal lamps and compact status lights in industrial and electronic products.
PCB Mount Indicator Component
These light bars are suitable for PCB-mounted applications. The selected model should be checked against the PCB layout, enclosure design, front-panel opening and required visible area.
Because round light bars are often used for panel indication, buyers should confirm the diameter, depth, body size, visible display area, pinout, electrical connection, LED color and latest approved technical drawing before PCB design or production.
Suitable for Industrial and Electronic Indication
Round LED Light Bars are useful in industrial equipment, control panels, electronic instruments, power systems, machine interfaces, embedded products and custom LED indication panels.
They provide a simple, durable and effective visual indication method for applications where users need to identify status, signal or function quickly.
