ST21KMV2B

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Toggle switches are one of the most versatile and useful components in electronics. The ST21KMV2B is a toggle switch that is designed for a wide range of applications. It is a two-position switch that offers users the ability to control and toggle between two states in a circuit, making it a popular choice for electronic projects. This article will discuss the application fields and working principles of the ST21KMV2B.

The ST21KMV2B is a contactless, low profile toggle switch. It is a simple and reliable switching solution which is perfect for testing, monitoring, low-frequency signal control, and power on/off control operations. It has a contactless design which eliminates the need for traditional contact structures that experience wear, over time. This helps ensure a longer life-span and low maintenance costs.

The ST21KMV2B is available in a range of sizes and variations to suit different application requirements. It is also available in both SPDT (single-pole double-throw) and DPDT (double-pole double-throw) configurations. The switch has two positions and offers two distinct ratings. The first is a 30 VDC/50 mA rating for signal control, and the second is a 250 VAC/2 A rating for power applications. It has a tact switch actuator and is designed to operate within -10 to +85 °C.

In terms of performance, the ST21KMV2B offers a contact gap of 1 mm or less and can be actuated using a force from 0.2 to 0.35 N. The mechanical and electrical life of this switch can be up to 500K cycles, which is impressive considering its size. The contact resistance is typically less than 100 mΩ, while the operating temperature range can be extended to -30 to +105 °C with a partial reduction of some of the performance characteristics.

The working principle of the ST21KMV2B is relatively straightforward. When the switch is operated, the contactless magnet is actuated, which causes the magnetic flux formation and rotating arm to move, switching the switch’s pole. This results in either connecting or breaking the circuit, depending on the pole’s position. This type of switch is useful because it is extremely reliable and accurate, meaning that it can be used to control circuitry with ease and precision.

The ST21KMV2B has a wide range of applications across a variety of industries. It is commonly used in the medical, automotive, and industrial sectors. In the medical sector, the switch can be used for patient monitoring, medical instrument control, and various medical displays. In the automotive sector, it can be used for vehicle alarm systems and various power-related applications. In the industrial sector, it is often used for any type of switch operation, such as toggling between power sources or control of process solenoids.

In conclusion, the ST21KMV2B is an reliable and accurate toggle switch that can be used in a wide range of applications. Its contactless design and two distinct ratings make it an ideal solution for many types of switch operations. Its working principle is straightforward, making it an easy and efficient solution.

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