Series:	HAL®
Packaging:	Tape & Box (TB)
Part Status:	Obsolete
Function:	Unipolar Switch
Technology:	Hall Effect
Polarization:	South Pole
Sensing Range:	42mT Trip, 18mT Release
Test Condition:	25°C
Voltage - Supply:	3.8 V ~ 24 V
Current - Supply (Max):	5.2mA
Current - Output (Max):	50mA
Output Type:	Open Drain
Features:	Temperature Compensated
Operating Temperature:	-20°C ~ 125°C (TA)
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package:	TO-92UA-6

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HAL101JQ-I Application Field and Working Principle

Introduction

The HAL101JQ-I is a magnetic switch whichconstructed with a solid state semiconductor protection and utilizes the Hall Effect principle.It is designed to give precise and reliable switching in response to small changes in external magnetic fields. With its low profile sealed package, it is suitable for use in harsh environments.

Application Field

The HAL101JQ-I is typically suitable for applications such as the detection of flow and air pressure,impact and vibration, door locks,water and liquid levels.The switch is designed to operate in harsh environments including high/low temperatures, shock and humidity. It has a wide temperature range from -40°C to +105°C. It also has a high sensitivity which gives a maximum SNR of-62 dB.

Working Principle

The HAL101JQ-I utilizes the Hall Effect principle in order to detect magnetic fields. The Hall Effect is based on the phenomenon of the charge carriers, typically electrons, exerting a force on the electric field inside a conductor in the presence of a magnetic field. It is this force that causes the Hall voltage to be created. This voltage is then used to create a voltage signal which is then used to detect the presence of the magnetic field.The sensing element of the HAL101JQ-I is a semiconductor, usually a silicon, that is placed between two electrodes. When the magnetic field is applied to the silicon, an electric current is generated, which creates a voltage that is applied to the output. If the applied voltage is greater than the threshold voltage of the output, the switch is activated.

Conclusion

The HAL101JQ-I is a magnetic switch which utilizes the Hall Effect principle in order to detect small changes in external magnetic fields and is suitable for harsh conditions. It is most commonly used in applications such as flow and air pressure detection, door locks, water and liquid levels, impact and vibration. This makes it a versatile tool that can greatly benefit any application that requires the detection of small magnetic fields.

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