Proximity Sensors – Mouser Puerto Rico

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59040 Reed Sensors

Littelfuse 59040 Reed Sensors are small, cylindrical reed sensors 31.0mm (1.22") long that press into a 9.5mm (.375") diameter hole with a choice of normally open, normally closed, or change-over contacts. Littelfuse 59040 is capable of switching up to 200V_DC at 10W contact rating. An extensive range of sensitivity with a specified cable length is available. The housing color is white. It has three crush ribs along the length of the capsule that allow a firm and fixed press-fit. 59040 is well-suited for use in a wide range of industrial, appliances, or IoT proximity sensing applications. It functions best with a 57040 actuator.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Sensing Method	Sensing Distance	Mounting Style	Output Configuration
Proximity Sensors NO 12-18AT Untinned Leads 59040-1-S-02-F Littelfuse 1: $3.37 A tariff of 35% may be applied if shipping to the United States. 372In Stock	Mfr. Part # 59040-1-S-02-F Mouser Part # 934-59040-1-S-02-F	Littelfuse	Proximity Sensors NO 12-18AT Untinned Leads Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	372In Stock	$3.37 $3.01 $2.88 $2.73 View $2.62 $2.51 $2.31 $2.24 $2.22 A tariff of 35% may be applied if shipping to the United States.	Min.: 1 Mult.: 1	Magnetic	25 mm	Wire	SPST-NO
Proximity Sensors NO 12-18AT Tinned Leads 59040-1-S-02-A Littelfuse 1: $3.52 A tariff of 10% may be applied if shipping to the United States. 461In Stock 1,600Expected 10/8/2026	Mfr. Part # 59040-1-S-02-A Mouser Part # 934-59040-1-S-02-A	Littelfuse	Proximity Sensors NO 12-18AT Tinned Leads Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	461In Stock 1,600Expected 10/8/2026	$3.52 $3.16 $3.02 $2.86 View $2.74 $2.63 $2.49 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1	Magnetic	25 mm	Wire	SPST-NO
Proximity Sensors NO 17-23AT Untinned Leads 59040-1-T-02-F Littelfuse 1: $3.37 A tariff of 10% may be applied if shipping to the United States. 15In Stock 500Expected 10/8/2026	Mfr. Part # 59040-1-T-02-F Mouser Part # 934-59040-1-T-02-F	Littelfuse	Proximity Sensors NO 17-23AT Untinned Leads Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	15In Stock 500Expected 10/8/2026	$3.37 $3.01 $2.88 $2.73 View $2.62 $2.51 $2.37 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1	Magnetic	21.2 mm	Wire	SPST-NO
Proximity Sensors NO 22-28AT Tinned Leads 59040-1-U-02-A Littelfuse 1: $4.23 A tariff of 10% may be applied if shipping to the United States. 33In Stock 500Expected 10/8/2026	Mfr. Part # 59040-1-U-02-A Mouser Part # 934-59040-1-U-02-A	Littelfuse	Proximity Sensors NO 22-28AT Tinned Leads Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	33In Stock 500Expected 10/8/2026	$4.23 $3.79 $3.62 $3.43 View $2.74 $2.63 $2.49 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1	Magnetic	17.9 mm	Wire	SPST-NO
Proximity Sensors NC 15-20AT Tinned Leads 59040-4-S-02-A Littelfuse 1: $7.45 A tariff of 35% may be applied if shipping to the United States. 14In Stock 1,000On Order	Mfr. Part # 59040-4-S-02-A Mouser Part # 934-59040-4-S-02-A	Littelfuse	Proximity Sensors NC 15-20AT Tinned Leads Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	14In Stock 1,000On Order On Order Ship Dates Mfr. #: 59040-4-S-02-A Stock: 14 Can Ship Immediately On Order: 500 Expected 1/4/2027 500 Expected 4/15/2027 Factory Lead-Time: 31 Weeks	$7.45 $6.11 $5.67 $5.36 View $5.03 $4.40 A tariff of 35% may be applied if shipping to the United States.	Min.: 1 Mult.: 1	Magnetic	21 mm	Wire	SPST-NC
Proximity Sensors NO 12-18AT JST typeXHP 2.5pitch 59040-1-S-02-E Littelfuse 500: $2.70 A tariff of 8% may be applied if shipping to the United States. Non-Stocked Lead-Time 16 Weeks	Mfr. Part # 59040-1-S-02-E Mouser Part # 934-59040-1-S-02-E	Littelfuse	Proximity Sensors NO 12-18AT JST typeXHP 2.5pitch Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	Non-Stocked Lead-Time 16 Weeks	$2.70 A tariff of 8% may be applied if shipping to the United States.	Min.: 500 Mult.: 100	Magnetic	25 mm	Wire	SPST-NO
Proximity Sensors NO 17-23AT Tinned Leads 59040-1-T-02-A Littelfuse 1: $3.52 A tariff of 32% may be applied if shipping to the United States. Non-Stocked Lead-Time 16 Weeks	Mfr. Part # 59040-1-T-02-A Mouser Part # 934-59040-1-T-02-A	Littelfuse	Proximity Sensors NO 17-23AT Tinned Leads Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	Non-Stocked Lead-Time 16 Weeks	$3.52 $3.16 $3.02 $2.86 View $2.74 $2.63 $2.49 A tariff of 32% may be applied if shipping to the United States.	Min.: 1 Mult.: 1	Magnetic	21.2 mm	Wire	SPST-NO
Proximity Sensors CO 15-20AT Tinned Leads 59040-3-S-02-A Littelfuse 500: $4.71 A tariff of 8% may be applied if shipping to the United States. Non-Stocked Lead-Time 27 Weeks	Mfr. Part # 59040-3-S-02-A Mouser Part # 934-59040-3-S-02-A	Littelfuse	Proximity Sensors CO 15-20AT Tinned Leads Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	Non-Stocked Lead-Time 27 Weeks	$4.71 A tariff of 8% may be applied if shipping to the United States.	Min.: 500 Mult.: 100	Magnetic	21 mm	Wire	SPDT-CO
Proximity Sensors CO 20-25AT Tinned Leads 59040-3-T-02-A Littelfuse 500: $4.71 A tariff of 10% may be applied if shipping to the United States. Non-Stocked Lead-Time 16 Weeks	Mfr. Part # 59040-3-T-02-A Mouser Part # 934-59040-3-T-02-A	Littelfuse	Proximity Sensors CO 20-25AT Tinned Leads Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	Non-Stocked Lead-Time 16 Weeks	$4.71 A tariff of 10% may be applied if shipping to the United States.	Min.: 500 Mult.: 100	Magnetic	18.4 mm	Wire	SPDT-CO
Proximity Sensors CO 25-30AT Tinned Leads 59040-3-U-02-A Littelfuse 500: $4.71 A tariff of 10% may be applied if shipping to the United States. Non-Stocked Lead-Time 16 Weeks	Mfr. Part # 59040-3-U-02-A Mouser Part # 934-59040-3-U-02-A	Littelfuse	Proximity Sensors CO 25-30AT Tinned Leads Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	Non-Stocked Lead-Time 16 Weeks	$4.71 A tariff of 10% may be applied if shipping to the United States.	Min.: 500 Mult.: 100	Magnetic	17 mm	Wire	SPDT-CO
Proximity Sensors NC 20-25AT Tinned Leads 59040-4-T-02-A Littelfuse 500: $4.40 A tariff of 32% may be applied if shipping to the United States. Non-Stocked Lead-Time 16 Weeks	Mfr. Part # 59040-4-T-02-A Mouser Part # 934-59040-4-T-02-A	Littelfuse	Proximity Sensors NC 20-25AT Tinned Leads Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	Non-Stocked Lead-Time 16 Weeks	$4.40 A tariff of 32% may be applied if shipping to the United States.	Min.: 500 Mult.: 100	Magnetic	18.4 mm	Wire	SPST-NC
Proximity Sensors NC 25-30AT Tinned Leads 59040-4-U-02-A Littelfuse 1: $5.82 A tariff of 10% may be applied if shipping to the United States. Non-Stocked Lead-Time 16 Weeks	Mfr. Part # 59040-4-U-02-A Mouser Part # 934-59040-4-U-02-A	Littelfuse	Proximity Sensors NC 25-30AT Tinned Leads Learn More about Littelfuse hamlin 59040 firecracker sensors	Datasheet	Non-Stocked Lead-Time 16 Weeks	$5.82 $5.25 $5.03 $4.78 View $4.60 $4.43 $4.40 A tariff of 10% may be applied if shipping to the United States.	Min.: 1 Mult.: 1	Magnetic	17 mm	Wire	SPST-NC

59040 Reed Sensors

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