Reed Switch

Reed Switch Magnet Interaction

Standex-Meder Electronics

This tutorial will define key terms for magnets and reed switches.  Additionally, it will describe how the positioning of the magnet’s north and south poles relative to the reed switch, produces different magnetic field arrays.  Understanding these magnetic field arrays will give insight into how the magnet and reed switch form their sensing function.
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ImageManufacturer Part NumberDescriptionAvailable QuantityBuy Now
SENSOR REED SPST-NO 1A 15W SMDMK23-35-B-2SENSOR REED SPST-NO 1A 15W SMD2945 - Immediate
SWITCH REED 24VDC 1W AXLORD211-1015SWITCH REED 24VDC 1W AXL6604 - Immediate
SENSOR REED SPST-NO 0.1A 1W SMDMK23-80-B-2SENSOR REED SPST-NO 0.1A 1W SMD4963 - Immediate
MAGNET PERM SMCO5 3.0X4.0MMSMCO5 3X4MMMAGNET PERM SMCO5 3.0X4.0MM3815 - Immediate
SWITCH REED 170VDC 10W AXLKSK-1A80-1015SWITCH REED 170VDC 10W AXL2483 - Immediate
SWITCH REED 24VDC 1W SMDORD213S-1-1015SWITCH REED 24VDC 1W SMD11527 - Immediate
SWITCH REED 60V 1W AXLKSK-1A04-1015SWITCH REED 60V 1W AXL1249 - Immediate
SENSOR REED SPST-NO 1A 10W SMDMK23-66-B-2SENSOR REED SPST-NO 1A 10W SMD8850 - Immediate
SENSOR REED SPST-NO 13.5MM SMDMK23-66-C-2SENSOR REED SPST-NO 13.5MM SMD5256 - Immediate
SWITCH REED 200VDC 10W AXLORD324-1015SWITCH REED 200VDC 10W AXL4004 - Immediate
SWITCH REED 100VDC 10W AXLORD228VL-1015SWITCH REED 100VDC 10W AXL2000 - Immediate
MAGNET PERM NDFEB 10.0X5.0X1.9MMNDFEB 10X5X1.9MMMAGNET PERM NDFEB 10.0X5.0X1.9MM1653 - Immediate
SWITCH REED 350V 50W AXIALORD229-2025SWITCH REED 350V 50W AXIAL7588 - Immediate
SWITCH REED 1000V 100W AXLKSK-1A85-3035SWITCH REED 1000V 100W AXL3560 - Immediate
REED SWITCH 175V 0.5AKSK-1C90F-2025REED SWITCH 175V 0.5A1078 - Immediate
MAGNET PERM NDFEB 6.0X10.0MMNDFEB 6X10MMMAGNET PERM NDFEB 6.0X10.0MM341 - Immediate
SENSOR REED SPST-NO 12MM SMDMK23-46-B-4SENSOR REED SPST-NO 12MM SMD4892 - Immediate
SWITCH REED 200V 10W AXLKSK-1A66/3-2030SWITCH REED 200V 10W AXL1028 - Immediate
SWITCH REED 100VDC 10W AXLORD228VL-1520SWITCH REED 100VDC 10W AXL2008 - Immediate
SWITCH REED 180VDC 10W AXLKSK-1A66-1015SWITCH REED 180VDC 10W AXL2966 - Immediate
SWITCH REED 200VDC 20W AXLKSK-1A35-1520SWITCH REED 200VDC 20W AXL2325 - Immediate
SWITCH REED 200VDC 10W AXLKSK-1A87-1015SWITCH REED 200VDC 10W AXL1161 - Immediate
SWITCH REED 350V 50W AXIALORD229-2530SWITCH REED 350V 50W AXIAL1716 - Immediate
REED SWITCH 100VDC 10W AXLORD311-1015REED SWITCH 100VDC 10W AXL1108 - Immediate
SWITCH REED 175VDC 10W AXLKSK-1C90F-1015SWITCH REED 175VDC 10W AXL1047 - Immediate
SWITCH REED 175VDC 10W AXLKSK-1C90F-1520SWITCH REED 175VDC 10W AXL190 - Immediate
SENOSR REED SPDT 0.5A 10W SMDMK23-90-C-2SENOSR REED SPDT 0.5A 10W SMD8303 - Immediate
SENSOR REED SPST-NO 12MM SMDMK23-46-B-2SENSOR REED SPST-NO 12MM SMD5000 - Immediate
SENSOR REED SPST-NO 10MM SMDMK23-87-C-2SENSOR REED SPST-NO 10MM SMD4985 - Immediate
SENSOR REED SPST-NO 1A 15W SMDMK23-35-B-4SENSOR REED SPST-NO 1A 15W SMD1306 - Immediate
SENSOR REED SPST-NO 0.4A 10W SMDMK23-87-B-2SENSOR REED SPST-NO 0.4A 10W SMD3866 - Immediate
SENSOR REED SPST-NO 7MM SMDMK23-80-C-2SENSOR REED SPST-NO 7MM SMD1193 - Immediate
SWITCH REED 30VDC 3WORT551-1015SWITCH REED 30VDC 3W717 - Immediate
SWITCH REED 200VDC 20W AXLKSK-1A35-1015SWITCH REED 200VDC 20W AXL602 - Immediate
MAGNET PERM ALNICO 2.5MM DRA4003004015MAGNET PERM ALNICO 2.5MM DRA488 - Immediate
MAGNET PERM ALNICO 4MMALNICO500 4X19MMMAGNET PERM ALNICO 4MM381 - Immediate
MAGNET PERM SMCO5 1.9MMSMCO5 1.9X3MMMAGNET PERM SMCO5 1.9MM477 - Immediate
SWITCH REED 24VDC 1W AXLORD213-1015SWITCH REED 24VDC 1W AXL1000 - Immediate
MAGNET 19MM X 3.2 X 3.2ALNICO500 19X3.2X3.2MMMAGNET 19MM X 3.2 X 3.2655 - Immediate
MAGNET PERM SMCO5 5.0X4.0MMSMCO5 5X4MMMAGNET PERM SMCO5 5.0X4.0MM368 - Immediate
MAGNET M04 IN SEALED PANEL SCREWM04MAGNET M04 IN SEALED PANEL SCREW586 - Immediate
MAGNET M13 SEALED PNL SCREW MNTM13MAGNET M13 SEALED PNL SCREW MNT277 - Immediate
SWITCH REED 200V 10W AXLKSK-1A66/3-1520SWITCH REED 200V 10W AXL998 - Immediate
REED SWITCH 200VDC 30W AXLORD312-1015REED SWITCH 200VDC 30W AXL658 - Immediate
SWITCH REED 180VDC 10W AXLKSK-1A66-1520SWITCH REED 180VDC 10W AXL965 - Immediate
SWITCH REED 24VDC 1W AXLORD213-1520SWITCH REED 24VDC 1W AXL837 - Immediate
REED SW 1000V 1.0AKSK-1A85-2030REED SW 1000V 1.0A376 - Immediate
SENSOR REED SWITCH 0.5A 250VKSK-1A52-2025SENSOR REED SWITCH 0.5A 250V563 - Immediate
MAGNET FLOATING MS01-PA BLACKMS01-PA/BLMAGNET FLOATING MS01-PA BLACK52 - Immediate
MAGNET FLOATING MS01-PPMS01-PPMAGNET FLOATING MS01-PP47 - Immediate
MAGNET PERM ALNICO 7.5MMALNICO500 7.5X27MMMAGNET PERM ALNICO 7.5MM183 - Immediate
SWITCH REED 200VDC 10W AXLKSK-1A87-1520SWITCH REED 200VDC 10W AXL585 - Immediate
SWITCH REED 170V 10W AXLKSK-1A80-1520SWITCH REED 170V 10W AXL424 - Immediate
SENSOR REED SPST-NO SHORT SMDMK23-35-D-2SENSOR REED SPST-NO SHORT SMD704 - Immediate
SWITCH REED 24VDC 1W AXLORD211-1520SWITCH REED 24VDC 1W AXL83 - Immediate
SWITCH REED 200V 10W AXLKSK-1A66/3-1015SWITCH REED 200V 10W AXL26 - Immediate
MAGNET M11/M8 THREADED 8MM CYLM11/M8MAGNET M11/M8 THREADED 8MM CYL23 - Immediate
SWITCH REED 200VDC 10W AXLKSK-1A66-2030SWITCH REED 200VDC 10W AXL0
SENSOR REED SPST-NO STRAIGHT SMDMK23-35-A-1SENSOR REED SPST-NO STRAIGHT SMD0
SENSOR REED SPST-NO STRAIGHT SMDMK23-35-B-1SENSOR REED SPST-NO STRAIGHT SMD0
SENSOR REED SPST-NO SHORT SMDMK23-35-C-2SENSOR REED SPST-NO SHORT SMD0
SENSOR REED SPST-NO 13.5MM SMDMK23-66-B-4SENSOR REED SPST-NO 13.5MM SMD0
SENSOR REED SPST-NO 10MM SMDMK23-87-B-4SENSOR REED SPST-NO 10MM SMD0
SWITCH REED 170VDC 10W AXLKSK-1A80-2030SWITCH REED 170VDC 10W AXL0
SWITCH REED 1000VDC 100W AXLKSK-1A85-3040SWITCH REED 1000VDC 100W AXL0
SWITCH REED 1000VDC 100W AXLKSK-1A85-2025SWITCH REED 1000VDC 100W AXL0
SWITCH REED 1000VDC 100W AXLKSK-1A85-2530SWITCH REED 1000VDC 100W AXL0
SENSOR REED SPST-NO 7MM SMDMK23-80-B-4SENSOR REED SPST-NO 7MM SMD0
SENSOR REED SPST-NO 21MM100W SMDMK23-85-D-2SENSOR REED SPST-NO 21MM100W SMD0
SENSOR REED SPDT-CHANGE SMDMK23-90-B-1SENSOR REED SPDT-CHANGE SMD0
SENSOR REED SPDT-CHANGE SMDMK23-90-B-2SENSOR REED SPDT-CHANGE SMD0
SENSOR REED SPDT-CHANGE SMDMK23-90-D-2SENSOR REED SPDT-CHANGE SMD0
ACTUATOR MAGNETIC FLAT PACKM13 MAGNETSACTUATOR MAGNETIC FLAT PACK0
MAGNET M05 IN SEALED PANEL SCREWM05MAGNET M05 IN SEALED PANEL SCREW0
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PTM Published on: 2012-03-21