SS41F - Bipolar Hall Effect Latch Sensor

SS41F - Bipolar Hall Effect Latch Sensor

The SS41F is an integrated Bipolar Hall effect sensor. That’s nice but what does it do? Holding a magnet near the sensor will cause the output pin to toggle. This makes for a robust presence sensor. A reed sensor also works nicely, but can be limited by the glass encapsulation and size. A hall effect sensor is much smaller, but can handle less current than a reed switch.

The SS41F are small, versatile digital Hall-effect devices that are operated by the magnetic field from a permanent magnet or an electromagnet, and are designed to respond to alternating North and South poles. A built-in regulator provides enhanced stability of operation over 4.5 Vdc to 24 Vdc supply voltage range, and internal circuitry is designed to prevent sensor damage in case the supply voltage polarity is accidentally reversed. The open-collector sinking output voltage is easily interfaced with a wide variety of electronic circuits. The SS41F is factory tested at 25 °C [77 °F] and the SS41G is factory tested at both 25 °C [77 °F] and 125 °C [257 °F]

Features

• Small, leaded, flat TO-92-style package allows for a compact PCB layout
• Wide operating voltage range of 4.5 Vdc to 24 Vdc makes these sensors useable in a variety of applications
• Current consumption of only 5 mA max. at 4.5 Vdc for energy efficiency
• Bipolar magnetics for ring magnet applications with alternating North and South poles