Form A is a single-pole, single-throw (SPST) normally open switch. Form C is a single-pole, double-throw (SPDT) switch that provides both normally open and normally closed contacts.
Magnetic Reed Switches Component Intelligence
Non-contact switching solutions for hermetic and high-reliability applications.
What are Magnetic Reed Switches components?
Magnetic reed switches are hermetically sealed, non-contact devices that actuate when exposed to a magnetic field. They are ideal for harsh environments where dust, moisture, or explosive gases are present, offering high reliability and zero power consumption in standby.
How to Choose Magnetic Reed Switches Components
Selecting the right reed switch requires balancing physical dimensions with electrical load requirements and magnetic sensitivity.
Sensitivity (AT)
Ampere-turn (AT) ratings define the magnetic field strength required to close the switch. Match this to your magnet's flux density.
Contact Configuration
Choose between Form A (SPST-NO), Form B (SPST-NC), or Form C (SPDT) based on your logic state requirements.
Load Characteristics
Reed switches are sensitive to inrush currents. Ensure the switch rating accounts for capacitive or inductive loads to prevent contact welding.
Package & Mounting
Select between surface mount, through-hole, or cylindrical housing styles based on your PCB or enclosure constraints.
Hermetic Integrity
Verify the glass-to-metal seal quality if the switch will be exposed to extreme thermal cycling or corrosive atmospheres.
Popular Magnetic Reed Switches Components
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