AH1803-SNG-7

Magnetic sensors and switches (solid state) are versatile components of many electrical and electronic systems, used for a variety of functions such as sensing, detection and control. The AH1803-SNG-7 is an example of such a device, and this article examines its application field and working principle.

The AH1803-SNG-7 is a unipolar Hall effect switch with a magnetic sensitivity of 20mV/AT. It is a compact size device (3mm x 3mm) and has a high temperature range of up to 150°C. These characteristics make it well suited to applications such as non-contact current sensing, motor control, and position and speed sensing systems, among others.

The AH1803-SNG-7 features a low on-resistance of 2.6Ω, high reliability with a guaranteed lifetime of 500,000 cycles, and a wide range of turn-on and turn-off magnetic thresholds. The device is also available in different package styles, including a surface mount version.

The operation of the AH1803-SNG-7 is based on the Hall effect, which is the tendency of a current-carrying conductor to generate a magnetic field around it. This magnetic field can be detected by a Hall effect sensor which consists of a thin conducting material sandwiched between two magnets. This sensor provides a constant and linear output voltage in response to changing magnetic fields.

In the case of the AH1803-SNG-7, the Hall effect sensor is mounted inside the device. When the magnetic field crosses a particular threshold, the sensor detects the field and the switch sees this field as an input signal. This input signal triggers the output of the device, switching it on or off depending on the magnitude of the applied field.

The AH1803-SNG-7 is an ideal choice for applications requiring sensing of magnetic fields, detection of changes in magnetic field orientation, and remote control of electrical devices. It offers high reliability and accuracy in a wide range of temperature and operating environments, making it suitable for use in various industrial, automotive, and consumer applications. The device’s small package size and low power consumption also make it an attractive choice for applications where space and energy management are important considerations.