Send Inquiry

Request To Call Back

Unipolar Hall-Effect Switch

Get a Price/Quote

MOQ : 100 Pieces

Unipolar Hall-Effect Switch Specification

Efficacy
High Sensitivity

Ambient Temperature
-40C to +85C

Features
Unipolar latch-type magnetic threshold, Solid-state reliability

Starting Type
Automatic

Current Type
DC

Voltage
2.7V to 6V DC

Noise Level
Silent Operation

Sealed Type
Encapsulated

Standard
RoHS Compliant

Product Type
Unipolar Hall-Effect Switch

Protect Feature
Reverse Polarity Protection

Power
Low Power Consumption

Color
Black

Dimension (L*W*H)
3.7 x 4.8 x 1.5 mm

Weight
0.02 g

Mounting Type
Surface Mount

Life Span
>100,000 Operations

Operating Current
<5 mA

Suitable Applications
Contactless Switches, Proximity Sensing, Rotary Position Sensing

Material
Semiconductor

Temperature Stability
Excellent

Response Time
<1 s

Output Type
Digital (Open Drain or CMOS)

Package Type
SOT-23

Switching Magnetic Threshold
Typical South Pole, Bop 55 Gauss, Brp 25 Gauss

Pin Count
3

Unipolar Hall-Effect Switch Trade Information

Minimum Order Quantity
100 Pieces

Supply Ability
10000 Pieces Per Month

Delivery Time
7 Days

Main Export Market(s)
Asia, Australia, Central America, North America, South America, Eastern Europe, Western Europe, Middle East, Africa

About Unipolar Hall-Effect Switch

Technical details

Terminal configuration and functions

Teminal	TYPE	DESCRIPTION
Name	Number
	UA	SO
VDD	1	1	PWR
GND	2	2	Groung
OUT	3	3	Output

Absolute Maximum Ratings

over operating free-air temperature range

		MIN	MAX	UNIT
Power supply voltage	VDD	-0.5	30	V
Output terminal voltage	OUT	-0.5	40	V
Output terminal current sink	ISINK	0	30	mA
Operating junction temperature, TJ		-40	175	deg
Tstg		-65	150	deg
VESD	HBM ESD stress voltage	-4.0	4.0	kV
	MM ESD stress voltage	-400	400	V

Operating Parameters: TA = 25deg, VDD=2.75VDC.

Parameter	Symbol	Min	Typ	Max	Units
Operating Point	Bop	+85	110	135	Gs
Release Point	Brp	+65	85	105	Gs
Hysteresis	Bhys	20	25	30	Gs

Reliable and High-Sensitivity Magnetic Sensing

This switch delivers reliable detection through its high sensitivity to magnetic fields, activating at a typical South Pole threshold (Bop 55 Gauss). Its solid-state design and unipolar latch-type sensing ensure dependable performance in contactless applications, even in challenging environments.

Designed for Versatility and Easy Integration

Housed in a tiny, lightweight SOT-23 package (3.7 x 4.8 x 1.5 mm), the switch supports surface-mount installation, making it suitable for automated assembly lines and space-constrained designs. With a digital output compatible with both open drain and CMOS logic, it integrates easily into a wide range of circuitry.

Robust and Durable Build Quality

This Hall-effect switch is constructed from high-quality semiconductor materials, providing silent operation, encapsulated sealing, and protection from reverse polarity. Exceptional temperature stability and a lifespan exceeding 100,000 operations ensure longevity and performance in demanding industrial and commercial environments.

FAQs of Unipolar Hall-Effect Switch:

Q: How does the Unipolar Hall-Effect Switch work in proximity sensing applications?

A: The switch detects the presence of a magnetic field at a typical South Pole using sensitive semiconductor components. When the threshold (Bop 55 Gauss) is reached, the output toggles, making it ideal for contactless proximity sensing without physical wear.

Q: What are the benefits of using this switch compared to mechanical alternatives?

A: This solid-state device operates silently, offers a long life span (over 100,000 operations), excellent temperature stability, and requires low power. Unlike mechanical switches, there is no physical contact, ensuring higher reliability and reduced maintenance.

Q: When should I use the Unipolar Hall-Effect Switch in my designs?

A: Use this device when you need reliable, contactless magnetic detection, such as in rotary position sensing, proximity sensors, or contactless switches. It is particularly suited to environments requiring fast response and robust temperature performance.

Q: Where is this device typically installed within electronic systems?

A: Thanks to its compact SOT-23 surface-mount package, the switch is commonly installed on printed circuit boards within sensors, industrial controllers, or embedded systems where space is limited and reliability is required.

Q: What type of output does the switch provide and how is it connected?

A: This switch offers a digital output that can be configured as open drain or CMOS. It connects easily to microcontroller inputs or digital logic circuits, ensuring compatibility across standard electronic designs.

Q: How is reverse polarity protection implemented in this Hall-Effect switch?

A: The device incorporates built-in reverse polarity protection circuitry, preventing damage if supply voltage connections are accidentally reversed, which enhances component safety and system robustness.

Q: What is the process for integrating this switch into my application?

A: Integration involves surface mounting the device onto the PCB, connecting it to the power supply (2.76V DC), and interfacing the digital output to your logic or microcontroller input. Its standard pinout and RoHS compliance streamline PCB layout and assembly.

Tell us about your requirement