APB2012SURKCGKC is a type of LED indicator in the discrete category. It is used as an alternative to traditional indicators, as it is a lower cost, as well as having a longer life-span for the device. The device has two parts: an integrated circuit (IC) and an LED array board. The board contains a number of LEDs arranged around the perimeter of the board. These LEDs are connected in a serial fashion, where the output of one LED is connected to the input of the next LED. The connection is then bridged to the IC which is used to control the brightness of the LEDs.

The APB2012SURKCGKC has a number of applications. It is often used as a general purpose indicator, such as for system status, alert messages, and the like. It can also be used as a signal-strength indicator, where it notifies the user of the signal strength of a particular device or network connection. It is also used in many audio applications such as guitar amplifiers, equalizers, and so forth. As the device is discrete, it has no moving parts and is therefore quite durable.

The working principle behind the APB2012SURKCGKC is fairly simple. The LED array is connected in series to the IC and arranged in an arch, so that they are evenly spaced apart. When an input signal is sent into the IC, each LED is illuminated according to the signal\'s strength. The IC will then regulate the brightness of each LED based on the signal\'s strength. The LEDs can also be switched on and off for a blink effect, which is helpful for indicating different types of error conditions.

The APB2012SURKCGKC is a great low cost and long lasting LED indicator that is quite versatile in its range of applications. It is particularly useful for applications such as signal strength indicators or alert messages, as it can be programmed to produce a wide range of signals or messages. It is also easy to use and requires no extra components, making it an ideal choice for people looking for a reliable and cost-effective LED indicator.