Hall sensor Honeywell SS495A, bipolar analog, supply 4.5–10.5 V DC, sensitivity range ±0.067 T

Honeywell SS495A is a bipolar analog Hall-effect sensor that delivers an output voltage proportional to the magnetic flux density within a specified sensitivity range of ±0.067 tesla. Designed for operation from 4.5 to 10.5 V DC, the SS495A provides a compact PCB-mountable solution for magnetic field detection in position sensing, proximity detection, current measurement and encoder systems. The device’s analog voltage output allows straightforward interfacing with microcontrollers, ADCs and analog signal chains.

Advantages

The SS495A offers stable analog output across the bipolar sensing range, enabling detection of both polarities of magnetic fields without digital switching. Its specified supply range of 4.5–10.5 V DC supports a variety of common system voltages. The sensor’s compact package and PCB-friendly pinout simplify integration into existing designs and prototypes. The continuous analog output is suitable for applications requiring proportional feedback rather than simple on/off detection.

Suitable for

• Position sensing for brushless motors, actuators and linear slides
• Proximity detection and magnetic limit switches
• Current sensing when combined with a conductor loop or magnetic concentrator
• Rotary encoders and speed measurement with magnetic targets
• Hobby electronics, industrial control boards and sensor modules

Key specifications

• Bipolar analog Hall-effect sensing
• Sensitivity range: ±0.067 tesla (−0.067 to +0.067 T)
• Supply voltage range: 4.5–10.5 V DC
• Voltage output proportional to magnetic flux density
• PCB-mountable package with standard pinout for integration
• Suitable for direct analog interfacing with ADCs and microcontrollers

How to use

Provide a stable DC supply within the 4.5–10.5 V range and connect the sensor according to the manufacturer’s pinout: supply, ground and analog output. Place the sensor on the PCB or module so its sensing axis aligns with the expected magnetic field direction. Measure the output voltage with an ADC or voltmeter; the output shifts proportionally when exposed to north or south magnetic poles within the ±0.067 T range. For calibration, record output voltages with known magnetic field strengths or known reference positions and map them to the application’s required units.

Recommendations

Use decoupling capacitors close to the sensor supply pins to reduce noise and ensure stable analog readings. Maintain consistent sensor orientation relative to magnetic targets and avoid nearby ferrous components that can distort the field. For higher accuracy in current sensing or weak-field detection, consider magnetic concentrators or flux guides to increase the effective field at the sensor.