What are Circuit Board Indicator LEDs?
Circuit Board Indicator LEDs are small components that use light to indicate the operational status of an electronic circuit.
It displays information such as device operation status or error occurrence through light color and flashing patterns. This allows the status of complex electronic devices to be intuitively grasped at a glance. It is composed of a light-emitting diode (LED), a semiconductor device that emits light when electricity flows through it, and is typically used by soldering it directly onto a printed circuit board.
Various color patterns, such as red and green, are commercially available. These color differences are used to clearly distinguish states. For example, green might indicate normal operation or power on, while red might signal an error or warning. Shapes vary widely, including round and chip types, allowing selection of the optimal product based on device design and available PCB space.
Applications of Circuit Board Indicator LEDs
Circuit board indicator LEDs are used in applications such as
1. Information and Communication Equipment
Used in information and communication fields like servers and network equipment. In servers and storage devices operating in data centers, LED flashes indicate hard disk access status or network communication status. This allows visual monitoring that the equipment is processing data normally. Multiple LEDs arranged like a bar graph are also used to display battery level or signal strength in stages.
2. Home Appliances
Used in power indicator lights for televisions and computers. A red light indicates standby mode, while green or blue lights show the device is powered on at a glance. Wireless routers use multiple flashing LEDs to indicate the status of individual functions like internet connectivity or wireless communication.
3. Industrial Equipment
This product is also indispensable in industrial equipment. Control panels managing production lines and various sensors incorporate green LEDs indicating normal operation and red LEDs signaling abnormalities. Observing these lights allows for quick status checks of widely dispersed equipment, even from a distance.