Pushbutton Switches - Hall Effect

Image	Part Number	Description / PDF	Quantity	Rfq
	MML11KA3AAK Honeywell Sensing and Productivity Solutions	SWITCH PUSHBUTTON HALL EFFECT	0
	AML11FBE2EE Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML11GBE2EA Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML11LBE3EA Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML11FBB3EA Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML11GBB2EA Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML11EBA3EE Honeywell Sensing and Productivity Solutions	SWITCH PUSHBUTTON HALL EFFECT	0
	AML11GBB3EE Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML11JBB3EA Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML12CBE2EA Honeywell Sensing and Productivity Solutions	SWITCH PUSHBUTTON HALL EFFECT	0
	AML12JBC2EA Honeywell Sensing and Productivity Solutions	SWITCH PUSHBUTTON HALL EFFECT	0
	AML11JBE2EE Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML12CBF3EE Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML12CBH2EE Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML11CBE2EE Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML11MBE3EA Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML11BBA2EE Honeywell Sensing and Productivity Solutions	SWITCH PUSHBUTTON HALL EFFECT	0
	AML11JBA2EE Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML11CBE2EA Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0
	AML11MBB3EA Honeywell Sensing and Productivity Solutions	SWITCH PUSH HALL EFFECT 0.4V	0

Pushbutton Switches - Hall Effect

1. Overview

Hall Effect Pushbutton Switches are contactless magnetic sensing devices that activate electrical circuits through magnetic field detection. Unlike traditional mechanical switches, these solid-state components utilize the Hall Effect principle (discovered by Edwin Hall in 1879) to detect magnetic flux density changes. This technology enables wear-free operation, making them critical in applications requiring high reliability and long operational lifespans. Their importance in modern systems includes enabling touchless control interfaces, improving system durability in harsh environments, and supporting safety-critical applications through their inherent fail-safe design capabilities.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Unipolar Switch	Responds to single-polarity magnetic fields	Industrial automation sensors
Bipolar Switch	Requires alternating magnetic poles for activation	Rotary position monitoring
Latching Switch	Maintains state after magnetic field removal	Security system tamper detection
Omni-directional Switch	Responds to magnetic fields from any direction	Portable medical devices
Programmable Switch	Adjustable sensitivity and switching thresholds	Smart home automation systems

3. Structure and Components

Typical construction includes: - Hall Sensor IC: Semiconductor element with integrated signal conditioning - Permanent Magnet: Provides reference magnetic field (integral or external) - Actuator Mechanism: Magnetic field perturbation component (rotary/sliding) - Protective Housing: IP65+ rated thermoplastic or metal enclosure - Electrical Contacts: SMD or through-hole PCB termination options - Signal Conditioning Circuitry: Built-in hysteresis and noise filtering

4. Key Technical Specifications

Parameter	Typical Range	Importance
Operating Voltage	3-24 VDC	Determines power supply compatibility
Current Rating	10-500 mA	Dictates load capacity
Response Time	10-100 s	Critical for high-speed applications
Contact Resistance	0.1-1.0	Affects signal integrity
Operating Temperature	-40 C to +150 C	Environmental reliability
Mechanical Life	10 million+ cycles	Long-term durability metric

5. Application Fields

Industrial Automation: CNC machine controls, robotic grippers
Medical Equipment: MRI scanner interlocks, infusion pumps
Automotive Systems: Transmission shift selectors, door latch sensors
Consumer Electronics: Gaming console controllers, smart appliances
Aerospace: Flight control systems, avionics panels
Renewable Energy: Solar tracker positioning systems

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Omron	D2F-Hall Series	IP67 rating, 100 million cycles
TE Connectivity	MS Series Hall Switch	Automotive-grade (-40 C to +125 C)
Allegro Micro	A11XX Series	Programmable magnetic thresholds
C&K Components	VT8 Series	Hermetically sealed construction
Honeywell	FS Series	UL-certified hazardous location rating

7. Selection Guidelines

Key considerations: 1. Environmental Conditions: Temperature extremes, vibration levels, and exposure to contaminants 2. Electrical Requirements: Voltage/current compatibility and EMI/RFI immunity needs 3. Mechanical Interface: Actuator type (pushbutton/rotary) and mounting configuration 4. Agency Approvals: UL/CSA/CE certifications for regulatory compliance 5. Cost vs Performance: Balancing longevity requirements with budget constraints 6. Customization Options: Special coatings, connector types, or branding requirements

8. Industry Trends and Future Outlook

Current development trends include: - Miniaturization: Sub-10mm packages for wearable devices - Wireless Integration: Bluetooth-enabled switches for IoT applications - Multi-axis Sensing: 3D magnetic field detection for complex control systems - Energy Efficiency: Ultra-low power modes (<1 A quiescent current) - Smart Diagnostics: Built-in self-test and failure prediction algorithms - Material Innovation: Graphene-based Hall elements for improved sensitivity