Reed Switches

Littelfuse Reed Switches are ideal for battery-powered applications and automotive safety products. Reed switches have two ferromagnetic blades contained within a tubular glass envelope that is hermetically sealed at each end. Switches are activated by a permanent magnet or an electromagnet, and the reed switch and magnetic field combination is commonly known as the "magnetic circuit."

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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Switch Type
Contact Form
Operate Range
Voltage Rating AC
Color
Mounting Style
Termination Style
Packaging
Littelfuse Magnetic/Reed Switches NO 20-25AT 5mm Overmolded Sensor
Datasheet
1,259In Stock
Min.: 1
Mult.: 1
Reel: 1,500

Miniature SPST 20 AT to 25 AT 140 VAC Black PCB Mount Gull Wing Lead Reel, Cut Tape
Littelfuse Magnetic/Reed Switches SUB-MIN OVERMOLD REED SWT GULL
Datasheet
1,398In Stock
4,500Expected 22/07/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

Sub-Miniature SPST 20 AT to 25 AT 140 VAC Black SMD/SMT Gull Wing Lead Reel, Cut Tape, MouseReel
Littelfuse Magnetic/Reed Switches 75-80AT CO 500V 30W 39.7MM REED
Datasheet
141In Stock
1,000Expected 22/05/2026
Min.: 1
Mult.: 1

Reed SPDT 75 AT to 80 AT Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches FLEX-14-20-25
Datasheet
885In Stock
1,000Expected 07/04/2026
Min.: 1
Mult.: 1

Sub-Miniature SPST 20 AT to 25 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches FLEX-14-25-30
Datasheet
51In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 20 AT to 25 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches SWITCH REED
Datasheet
1,097In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 10 AT to 15 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches SWITCH REED
Datasheet
1,900In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 15 AT to 20 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches HA15-2 17-23
Datasheet
1,046In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 17 AT to 23 AT 265 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches 14mm SPST-NO 10-15AT
Datasheet
906In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 10 AT to 30 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches SWITCH REED
Datasheet
740In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 12 AT to 23 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MDCG-4 5265 17-28 RDSW
Datasheet
981In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 17 AT to 28 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches SWITCH REED
Datasheet
51In Stock
4,000On Order
Min.: 1
Mult.: 1

Miniature SPDT 15 AT to 20 AT 120 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MDRR-DT 1156 20-25 F
Datasheet
105In Stock
1,000Expected 22/09/2026
Min.: 1
Mult.: 1

Miniature SPDT 20 AT to 25 AT 120 VAC Clear PCB Mount SMD/SMT Bulk
Littelfuse Magnetic/Reed Switches MDSM-10R 5431 10-15
Datasheet
661In Stock
3,000Expected 10/08/2026
Min.: 1
Mult.: 1
Reel: 3,000

Sub-Miniature SPST 10 AT to 15 AT 140 VAC Clear PCB Mount Axial Reel, Cut Tape
Littelfuse Magnetic/Reed Switches MDSR-10 10-15
Datasheet
1,621In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 10 AT to 15 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches SPST 140VAC, 15 AT-20 AT Range
Datasheet
1,812In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 15 AT to 20 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MDSR-7 15-20
Datasheet
Lead-Time 14 Weeks
Min.: 1
Mult.: 1

Sub-Miniature SPST 15 AT to 20 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches SWITCH REED
Datasheet
1,658In Stock
Min.: 1
Mult.: 1

Miniature SPST 17 AT to 23 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MLRR-3 22-28
Datasheet
936In Stock
Min.: 1
Mult.: 1

Miniature SPST 22 AT to 28 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MLRR-3 27-33
Datasheet
988In Stock
Min.: 1
Mult.: 1

Miniature SPST 27 AT to 33 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MLRR-3 32-38
Datasheet
221In Stock
Min.: 1
Mult.: 1

Miniature SPST 32 AT to 38 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MLRR-4 17-23
Datasheet
1,028In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 17 AT to 23 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MLRR-4 27-33
Datasheet
701In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 27 AT to 33 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches NO 37-43AT
Datasheet
635In Stock
Min.: 1
Mult.: 1

Miniature SPST 37 AT to 43 AT 265 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches 32-38AT NO 100V 10W 19.7MM REED
Datasheet
8In Stock
1,000Expected 10/08/2026
Min.: 1
Mult.: 1

Miniature SPST 32 AT to 38 AT Clear PCB Mount Axial Bulk