Littelfuse, Inc. Datasheets for Reed Switches

Reed switches are magnetically actuated switches. They are typically manufactured with two ferromagnetic reeds (contact blades), which are sealed in a glass capsule. In the presence of a magnet, the blades (contacts) close. 
Reed Switches: Learn more

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Product Name Notes
Reed Sensors -- 59030-1-S
Reed Sensors -- 59030-1-T
Reed Sensors -- 59030-1-U
Reed Sensors -- 59030-1-V
Reed Sensors -- 59030-2-T
Reed Sensors -- 59030-2-U
Reed Sensors -- 59030-2-V
Reed Sensors -- 59030-3-S
Reed Sensors -- 59030-3-T
Reed Sensors -- 59030-3-U
Reed Sensors -- 59030-4-S
Reed Sensors -- 59030-4-T
Reed Sensors -- 59030-4-U
A cylindrical reed sensor 38.1mm x 6.22mm (1.50" x 0.245") with a choice of normally open, normally closed or changeover contacts. Capable of switching up to 265Vac/300Vdc at 10VA. Available...
Reed Sensors -- 59145-1-S
Reed Sensors -- 59145-1-T
Reed Sensors -- 59145-1-U
Reed Sensors -- 59145-1-V
Reed Sensors -- 59145-2-T
Reed Sensors -- 59145-2-U
Reed Sensors -- 59145-2-V
Reed Sensors -- 59145-3-S
Reed Sensors -- 59145-3-T
Reed Sensors -- 59145-3-U
Reed Sensors -- 59145-4-S
Reed Sensors -- 59145-4-T
Reed Sensors -- 59145-4-U
Reed Sensors -- 59150-1-S
Reed Sensors -- 59150-1-T
Reed Sensors -- 59150-1-U
Reed Sensors -- 59150-1-V
Reed Sensors -- 59150-2-T
Reed Sensors -- 59150-2-U
Reed Sensors -- 59150-2-V
Reed Sensors -- 59150-3-S
Reed Sensors -- 59150-3-T
Reed Sensors -- 59150-3-U
Reed Sensors -- 59150-4-S
Reed Sensors -- 59150-4-T
Reed Sensors -- 59150-4-U
A flange mount reed sensor 28.57mm x 19.05mm x 6.35mm (1.125" x 0.750" x 0.259") with a choice of normally open, normally open high-voltage, normally closed or changeover contacts. Its...
Reed Sensors -- 59105-1-S
Reed Sensors -- 59105-1-T
Reed Sensors -- 59105-1-U
Reed Sensors -- 59105-1-V
Reed Sensors -- 59105-2-T
Reed Sensors -- 59105-2-U
Reed Sensors -- 59105-2-V
Reed Sensors -- 59105-4-S
Reed Sensors -- 59105-4-T
Reed Sensors -- 59105-4-U
A flange mount reed sensor 28.57mm x 19.05mm x 6.35mm (1.125" x 0.750" x 0.259") with an integral two-pin connector. Choice of normally open, normally open high-voltage or normally closed...
Reed Sensors -- 59125-1-S
Reed Sensors -- 59125-1-T
Reed Sensors -- 59125-1-U
Reed Sensors -- 59125-1-V
Reed Sensors -- 59125-2-T
Reed Sensors -- 59125-2-U
Reed Sensors -- 59125-2-V
Reed Sensors -- 59125-4-S
Reed Sensors -- 59125-4-T
Reed Sensors -- 59125-4-U
A flange mount reed sensor 28.57mm x 19.05mm x 6.35mm (1.125" x 0.750" x 0.259") with integral terminal pins. Choice of normally open, normally open high-voltage or normally closed contacts.
Reed Sensors -- 59135-1-S
Reed Sensors -- 59135-1-T
Reed Sensors -- 59135-1-U
Reed Sensors -- 59135-1-V
Reed Sensors -- 59135-2-T
Reed Sensors -- 59135-2-U
Reed Sensors -- 59135-2-V
Reed Sensors -- 59135-3-S
Reed Sensors -- 59135-3-T
Reed Sensors -- 59135-3-U
Reed Sensors -- 59135-4-S
Reed Sensors -- 59135-4-T
Reed Sensors -- 59135-4-U
A high temperature flange mount reed sensor 28.57mm x 19.05mm x 6.35mm (1.125" x 0.750" x 0.259") with a choice of normally open, normally open high-voltage, normally closed or changeover...
Reed Sensors -- 59300-00-00 A magnetically operated level sensor to be used with a float magnet (not provided). Provided with normally open contacts. Capable of switching up to 200Vdc at 10W. Ideally suited for...
Reed Sensors -- 59251-1-S A magnetically operated push button sensor with simple push-fit clip mounting. It has a large integral dome and its normally open contacts actuate when the dome is depressed. Switches up...
Reed Sensors -- 59250-1-S A magnetically operated push button sensor with simple push-fit clip mounting. Normally open contacts actuate when the plunger is depressed. Switches up to 200Vdc at 10W. It has an integral...
Reed Sensors -- 59140-1-S
Reed Sensors -- 59140-1-T
Reed Sensors -- 59140-1-U
Reed Sensors -- 59140-1-V
Reed Sensors -- 59140-2-T
Reed Sensors -- 59140-2-U
Reed Sensors -- 59140-2-V
Reed Sensors -- 59140-3-S
Reed Sensors -- 59140-3-T
Reed Sensors -- 59140-3-U
Reed Sensors -- 59140-4-S
Reed Sensors -- 59140-4-T
Reed Sensors -- 59140-4-U
Reed Sensors -- 59141-1-S
Reed Sensors -- 59141-1-T
Reed Sensors -- 59141-1-U
Reed Sensors -- 59141-1-V
Reed Sensors -- 59141-2-T
Reed Sensors -- 59141-2-U
Reed Sensors -- 59141-2-V
Reed Sensors -- 59141-3-S
Reed Sensors -- 59141-3-T
Reed Sensors -- 59141-3-U
Reed Sensors -- 59141-4-S
Reed Sensors -- 59141-4-T
Reed Sensors -- 59141-4-U
A miniature flange mount reed sensor occupying only 3.22cm2 (0.500in2) board space with a choice of normally open, normally open high-voltage, normally closed or changeover contacts. Its...
Reed Switches -- 59166-1-S-00-C
Reed Switches -- 59166-1-S-00-D
Reed Switches -- 59166-1-T-00-C
Reed Switches -- 59166-1-T-00-D
Reed Switches -- 59166-1-U-00-C
Reed Switches -- 59166-1-U-00-D
A miniature overmolded reed sensor 16.00mm x 2.40mm x 2.40mm (0.630" x 0.094" x 0.094") with straight or gull-wing leads. Provided with normally open contacts. Capable of switching up to...
Reed Switches -- 59165-1-S-00-A
Reed Switches -- 59165-1-S-00-B
Reed Switches -- 59165-1-S-00-C
Reed Switches -- 59165-1-S-00-D
Reed Switches -- 59165-1-T-00-A
Reed Switches -- 59165-1-T-00-B
Reed Switches -- 59165-1-T-00-C
Reed Switches -- 59165-1-T-00-D
Reed Switches -- 59165-1-U-00-A
Reed Switches -- 59165-1-U-00-B
Reed Switches -- 59165-1-U-00-C
Reed Switches -- 59165-1-U-00-D
A miniature overmolded reed sensor 16.00mm x 2.41mm x 2.41mm (0.630" x 0.095" x 0.095") with straight, staple-form, or gull-wing leads. Provided with normally open contacts. Capable of switching up...
Reed Sensors -- 59020-1-S
Reed Sensors -- 59020-1-T
A miniature, cylindrical reed sensor 15.24mm x 5.10mm (0.600" x 0.201") with a normally open contact. Capable of switching up to 170Vdc at 10W. Available with a range of sensitivity,...
Reed Sensors -- 59021-1-S
Reed Sensors -- 59021-1-T
A miniature, cylindrical reed sensor with a robust aluminum body 15.24mm x 5.10mm (0.600" x 0.201") with a normally open contact. Capable of switching up to 170Vdc at 10W. Available...
Reed Switches -- 59045-1-S-00-0
Reed Switches -- 59045-1-T-00-0
Reed Switches -- 59045-1-U-00-0
A miniature, PCB mount reed switch 17.78mm x 4.32mm x 3.30mm (0.700" x 0.170" x 0.130") with a normally open contact. Contains molded stand-offs to allow board washing. Available with...
Reed Sensors -- 59085-1-T
Reed Sensors -- 59085-3-T
Reed Sensors -- 59085-4-T
Reed Sensors -- 59085-5-T
Reed Sensors -- 59086-1-T
Reed Sensors -- 59086-3-T
Reed Sensors -- 59086-4-T
Reed Sensors -- 59086-5-T
A reed sensor with integral actuator magnet. Actuation occurs when a suitable vane passes through the slot between the magnet and reed switch. Choice of normally open, normally closed, high-voltage...
Reed Sensors -- 59090-3-T
Reed Sensors -- 59090-4-T
Reed Sensors -- 59090-5-T
A robust reed sensor with integral actuator magnet. Actuation occurs when a suitable vane passes through the slot between the magnet and reed switch. Choice of normally closed, high-voltage normally...
Reed Sensors -- 59075-1-S
Reed Sensors -- 59075-1-T
Reed Sensors -- 59075-1-U
Reed Sensors -- 59075-1-V
Reed Sensors -- 59075-2-T
Reed Sensors -- 59075-2-U
Reed Sensors -- 59075-2-V
Reed Sensors -- 59075-3-S
Reed Sensors -- 59075-3-T
Reed Sensors -- 59075-3-U
Reed Sensors -- 59075-4-S
Reed Sensors -- 59075-4-T
Reed Sensors -- 59075-4-U
A robust stainless steel barrel sensor with an M12 x 1mm pitch thread, 46mm (1.810") long with a choice of normally open, normally open high-voltage, normally closed or changeover contacts.
Reed Sensors -- 59210-4-T A small lever arm reed sensor in a clip mounting frame with low operating force and an integral 2-pin connector. Provided with normally closed contacts. Capable of switching up to...
Reed Sensors -- 59630-1-T
Reed Sensors -- 59630-2-T
Reed Sensors -- 59630-3-T
Reed Sensors -- 59630-4-T
A small sensor with integral float actuator and an M8 x 1.25mm pitch thread with a choice of normally open, normally open high-voltage, normally closed or change-over contacts. Capable of...
Reed Sensors -- 59022-1-S
Reed Sensors -- 59022-1-T
Reed Sensors -- 59022-1-U
Reed Sensors -- 59022-3-S
Reed Sensors -- 59022-3-T
Reed Sensors -- 59022-3-U
Reed Sensors -- 59022-4-S
Reed Sensors -- 59022-4-T
Reed Sensors -- 59022-4-U
A small, cylindrical reed sensor 25.4mm (L) x 5.80mm (Dia.) (1.00" x 0.228") with a choice of normally open, normally closed or change-over contacts. Capable of switching up to 300Vdc...
Reed Sensors -- 59025-1-S
Reed Sensors -- 59025-1-T
Reed Sensors -- 59025-1-U
Reed Sensors -- 59025-1-V
Reed Sensors -- 59025-2-S
Reed Sensors -- 59025-2-T
Reed Sensors -- 59025-2-U
Reed Sensors -- 59025-2-V
Reed Sensors -- 59025-3-S
Reed Sensors -- 59025-3-T
Reed Sensors -- 59025-3-U
Reed Sensors -- 59025-4-S
Reed Sensors -- 59025-4-T
Reed Sensors -- 59025-4-U
A small, cylindrical reed sensor 25.4mm x 6.22mm (1.00" x 0.245") with a choice of normally open, normally closed or changeover contacts. Capable of switching up to 265Vac/300Vdc at 10VA.
Reed Switches -- 59050-1-S-00-0
Reed Switches -- 59050-1-T-00-0
Reed Switches -- 59050-1-U-00-0
Reed Switches -- 59050-2-T-00-0
Reed Switches -- 59050-2-U-00-0
A small, PCB mount reed switch 22.86mm x 6.73mm x 4.57mm (0.900" x 0.265" x 0.180") with a choice of normally open, normally closed or changeover contacts. Contains molded stand-offs...
Reed Sensors -- 59065-1-S
Reed Sensors -- 59065-1-T
Reed Sensors -- 59065-1-U
Reed Sensors -- 59065-1-V
Reed Sensors -- 59065-2-T
Reed Sensors -- 59065-2-U
Reed Sensors -- 59065-2-V
Reed Sensors -- 59065-3-S
Reed Sensors -- 59065-3-T
Reed Sensors -- 59065-3-U
Reed Sensors -- 59065-4-S
Reed Sensors -- 59065-4-T
Reed Sensors -- 59065-4-U
A small, plastic barrel sensor with a 5/16" x 24 thread, 38.1mm (1.500") long with a choice of normally open, normally open high-voltage, normally closed or changeover contacts. Capable of...
Reed Sensors -- 59070-1-S
Reed Sensors -- 59070-1-T
Reed Sensors -- 59070-1-U
Reed Sensors -- 59070-1-V
Reed Sensors -- 59070-2-T
Reed Sensors -- 59070-2-U
Reed Sensors -- 59070-2-V
Reed Sensors -- 59070-3-S
Reed Sensors -- 59070-3-T
Reed Sensors -- 59070-3-U
Reed Sensors -- 59070-4-S
Reed Sensors -- 59070-4-T
Reed Sensors -- 59070-4-U
A small, plastic barrel sensor with an M8 x 1.25mm pitch thread, 38.1mm (1.500") long with a choice of normally open, normally open high-voltage, normally closed or changeover contacts. Capable...
Reed Sensors -- 59060-1-S
Reed Sensors -- 59060-1-T
Reed Sensors -- 59060-1-U
Reed Sensors -- 59060-1-V
Reed Sensors -- 59060-2-T
Reed Sensors -- 59060-2-U
Reed Sensors -- 59060-2-V
Reed Sensors -- 59060-3-S
Reed Sensors -- 59060-3-T
Reed Sensors -- 59060-3-U
Reed Sensors -- 59060-4-S
Reed Sensors -- 59060-4-T
Reed Sensors -- 59060-4-U
A small, stainless steel barrel sensor with an M8 x 1.25mm pitch thread, 36mm (1.420") long with a choice of normally open, normally open high-voltage, normally closed or changeover contacts.
Reed Switches -- DRR-129-42-48
Reed Switches -- DRR-129-42-53
Reed Switches -- DRR-129-42-83
Reed Switches -- DRR-129-47-53
Reed Switches -- DRR-129-47-58
Reed Switches -- DRR-129-47-68
Reed Switches -- DRR-129-57-63
Reed Switches -- DRR-129-57-68
A standard, normally open switch with a 50.80mm long x 5.25mm diameter (2.000" x .207") glass envelope, capable of high voltage and power switching up to 400Vdc at 100W. It...
Reed Switches -- 59170-1-S-00-A
Reed Switches -- 59170-1-S-00-C
Reed Switches -- 59170-1-S-00-D
Reed Switches -- 59170-1-T-00-A
Reed Switches -- 59170-1-T-00-C
Reed Switches -- 59170-1-T-00-D
Reed Switches -- 59170-1-U-00-A
Reed Switches -- 59170-1-U-00-C
Reed Switches -- 59170-1-U-00-D
A sub-miniature overmolded reed sensor 11.43mm x 2.29mm x 2.29mm (0.450" x 0.090" x 0.090") with either straight or gull-wing leads. Provided with normally open contacts. Capable of switching up...
Reed Sensors -- 59010-1-S
Reed Sensors -- 59010-1-T
A sub-miniature, cylindrical reed sensor 9.0mm x 3.0mm (0.354" x 0.118") with a normally open contact. Capable of switching up to 170Vdc at 10W. Available with a range of sensitivity,...
Reed Sensors -- 59040-1-S
Reed Sensors -- 59040-1-T
Reed Sensors -- 59040-1-U
Reed Sensors -- 59040-3-S
Reed Sensors -- 59040-3-T
Reed Sensors -- 59040-3-U
Reed Sensors -- 59040-4-S
Reed Sensors -- 59040-4-T
Reed Sensors -- 59040-4-U
The 59040 Press-Fit Firecracker Reed Sensor is a small, cylindrical reed sensor 31.0mm (1.22”) long that presses into a 9.5mm (.375”) diameter hole with a choice of normally open, normally...

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