Microminiature SMT top actuated switch designed for durability and reliability
Ideal for industrial, medical, and automotive applications
Ultra-low current capabilities suitable for sensitive electronic circuits
Excellent tactile feedback with a small footprint
Available with 4 actuation forces
IP40 rated for environmental protection
Electrical Characteristics
Maximum Power
1 VA (Silver contacts), 0.2 VA (Gold contacts)
Maximum Voltage
32 VDC
Minimum Voltage
20 mVDC
Maximum Current
50 mA (Silver), 10 mA (Gold)
Minimum Current
1 mA (standard), 1µA at 1.8 VDC for ULC version
Dielectric Strength
≥ 250 Vrms
Contact Resistance
≤ 100 mΩ
Insulation Resistance
≥ 1 GΩ
Bounce Time
≤ 3 ms
Environmental Characteristics
Operating Temperature
-40°C to 85°C (Silver contacts), -40°C to 125°C (Gold contacts)
Storage Temperature
-55°C to 85°C (Silver contacts), -55°C to 125°C (Gold contacts)
Mechanical Characteristics
Operation Force
1.2 N (120 g), 2.0 N (200 g), 3.0 N (300 g), 4.0 N (400 g)
Operation Life
Up to 300,000 cycles depending on model
Travel
0.20 mm to 0.30 mm
Additional Details
Available with ground pin (G) or no ground pin (NG) options
Lead-free compatible versions (LFS for silver plated, LFG for gold plated)
Suitable for applications requiring high durability and tactile feedback
Note
Specifications are subject to change without notice. For specific or custom configurations, please consult the Littelfuse / C&K customer service. The datasheet can be downloaded here.
Disclaimer
This datasheet does not provide enough information for applications that require a certain level of quality or safety such as automotive, medical systems, or safety equipment. Please contact customer service for the contractual specification package.
For more details, please search the internet for the part number Y78B44110FP.
{"id":10027968266557,"title":"Y78B44110FP","handle":"y78b44110fp","description":"\u003ch3\u003eY78B44110FP Tactile Switches Tact - Littelfuse \/ C\u0026amp;K Components\u003c\/h3\u003e\n\u003cp\u003ePart Number: Y78B44110FP\u003c\/p\u003e\n\u003cp\u003eManufacturer: Littelfuse \/ C\u0026amp;K Components\u003c\/p\u003e\n\u003cp\u003eCountry of Origin: France (FR)\u003c\/p\u003e\n\u003cp\u003eUnit of Measure (UOM): Each (EA)\u003c\/p\u003e\n\u003cp\u003eECCN: EAR99\u003c\/p\u003e\n\u003cp\u003ePackage Type: Tape\u003c\/p\u003e\n\u003cp\u003eDatasheet: \u003ca href=\"https:\/\/ckswitches.com\/media\/1480\/kmr4.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMicrominiature SMT top actuated switch designed for durability and reliability\u003c\/li\u003e\n \u003cli\u003eIdeal for industrial, medical, and automotive applications\u003c\/li\u003e\n \u003cli\u003eUltra-low current capabilities suitable for sensitive electronic circuits\u003c\/li\u003e\n \u003cli\u003eExcellent tactile feedback with a small footprint\u003c\/li\u003e\n \u003cli\u003eAvailable with 4 actuation forces\u003c\/li\u003e\n \u003cli\u003eIP40 rated for environmental protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical Characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eMaximum Power\u003c\/th\u003e\n \u003ctd\u003e1 VA (Silver contacts), 0.2 VA (Gold contacts)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMaximum Voltage\u003c\/th\u003e\n \u003ctd\u003e32 VDC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMinimum Voltage\u003c\/th\u003e\n \u003ctd\u003e20 mVDC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMaximum Current\u003c\/th\u003e\n \u003ctd\u003e50 mA (Silver), 10 mA (Gold)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMinimum Current\u003c\/th\u003e\n \u003ctd\u003e1 mA (standard), 1µA at 1.8 VDC for ULC version\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eDielectric Strength\u003c\/th\u003e\n \u003ctd\u003e≥ 250 Vrms\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eContact Resistance\u003c\/th\u003e\n \u003ctd\u003e≤ 100 mΩ\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInsulation Resistance\u003c\/th\u003e\n \u003ctd\u003e≥ 1 GΩ\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBounce Time\u003c\/th\u003e\n \u003ctd\u003e≤ 3 ms\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eEnvironmental Characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating Temperature\u003c\/th\u003e\n \u003ctd\u003e-40°C to 85°C (Silver contacts), -40°C to 125°C (Gold contacts)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eStorage Temperature\u003c\/th\u003e\n \u003ctd\u003e-55°C to 85°C (Silver contacts), -55°C to 125°C (Gold contacts)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMechanical Characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eOperation Force\u003c\/th\u003e\n \u003ctd\u003e1.2 N (120 g), 2.0 N (200 g), 3.0 N (300 g), 4.0 N (400 g)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperation Life\u003c\/th\u003e\n \u003ctd\u003eUp to 300,000 cycles depending on model\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTravel\u003c\/th\u003e\n \u003ctd\u003e0.20 mm to 0.30 mm\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eAvailable with ground pin (G) or no ground pin (NG) options\u003c\/li\u003e\n \u003cli\u003eLead-free compatible versions (LFS for silver plated, LFG for gold plated)\u003c\/li\u003e\n \u003cli\u003eSuitable for applications requiring high durability and tactile feedback\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eSpecifications are subject to change without notice. For specific or custom configurations, please consult the Littelfuse \/ C\u0026amp;K customer service. The datasheet can be downloaded \u003ca href=\"https:\/\/ckswitches.com\/media\/1480\/kmr4.pdf\" target=\"_blank\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eDisclaimer\u003c\/h3\u003e\n\u003cp\u003eThis datasheet does not provide enough information for applications that require a certain level of quality or safety such as automotive, medical systems, or safety equipment. Please contact customer service for the contractual specification package.\u003c\/p\u003e\n\n\u003cp\u003eFor more details, please search the internet for the part number \u003cstrong\u003eY78B44110FP\u003c\/strong\u003e.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-16T05:20:46+05:30","created_at":"2025-08-16T05:20:46+05:30","vendor":"Waldom Electonics","type":"","tags":["IMPORT_CSV","IMPORT_PT2","LITTE-CKCO","Switch","WLDM"],"price":3271,"price_min":3271,"price_max":3271,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50626367848765,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"Y78B44110FP","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Y78B44110FP","public_title":null,"options":["Default Title"],"price":3271,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"Y78B44110FP","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/11132755.png?v=1755301849"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11132755.png?v=1755301849","options":["Title"],"media":[{"alt":null,"id":45862580420925,"position":1,"preview_image":{"aspect_ratio":1.0,"height":400,"width":400,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11132755.png?v=1755301849"},"aspect_ratio":1.0,"height":400,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11132755.png?v=1755301849","width":400}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eY78B44110FP Tactile Switches Tact - Littelfuse \/ C\u0026amp;K Components\u003c\/h3\u003e\n\u003cp\u003ePart Number: Y78B44110FP\u003c\/p\u003e\n\u003cp\u003eManufacturer: Littelfuse \/ C\u0026amp;K Components\u003c\/p\u003e\n\u003cp\u003eCountry of Origin: France (FR)\u003c\/p\u003e\n\u003cp\u003eUnit of Measure (UOM): Each (EA)\u003c\/p\u003e\n\u003cp\u003eECCN: EAR99\u003c\/p\u003e\n\u003cp\u003ePackage Type: Tape\u003c\/p\u003e\n\u003cp\u003eDatasheet: \u003ca href=\"https:\/\/ckswitches.com\/media\/1480\/kmr4.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMicrominiature SMT top actuated switch designed for durability and reliability\u003c\/li\u003e\n \u003cli\u003eIdeal for industrial, medical, and automotive applications\u003c\/li\u003e\n \u003cli\u003eUltra-low current capabilities suitable for sensitive electronic circuits\u003c\/li\u003e\n \u003cli\u003eExcellent tactile feedback with a small footprint\u003c\/li\u003e\n \u003cli\u003eAvailable with 4 actuation forces\u003c\/li\u003e\n \u003cli\u003eIP40 rated for environmental protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical Characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eMaximum Power\u003c\/th\u003e\n \u003ctd\u003e1 VA (Silver contacts), 0.2 VA (Gold contacts)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMaximum Voltage\u003c\/th\u003e\n \u003ctd\u003e32 VDC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMinimum Voltage\u003c\/th\u003e\n \u003ctd\u003e20 mVDC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMaximum Current\u003c\/th\u003e\n \u003ctd\u003e50 mA (Silver), 10 mA (Gold)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMinimum Current\u003c\/th\u003e\n \u003ctd\u003e1 mA (standard), 1µA at 1.8 VDC for ULC version\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eDielectric Strength\u003c\/th\u003e\n \u003ctd\u003e≥ 250 Vrms\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eContact Resistance\u003c\/th\u003e\n \u003ctd\u003e≤ 100 mΩ\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInsulation Resistance\u003c\/th\u003e\n \u003ctd\u003e≥ 1 GΩ\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBounce Time\u003c\/th\u003e\n \u003ctd\u003e≤ 3 ms\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eEnvironmental Characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating Temperature\u003c\/th\u003e\n \u003ctd\u003e-40°C to 85°C (Silver contacts), -40°C to 125°C (Gold contacts)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eStorage Temperature\u003c\/th\u003e\n \u003ctd\u003e-55°C to 85°C (Silver contacts), -55°C to 125°C (Gold contacts)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMechanical Characteristics\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eOperation Force\u003c\/th\u003e\n \u003ctd\u003e1.2 N (120 g), 2.0 N (200 g), 3.0 N (300 g), 4.0 N (400 g)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperation Life\u003c\/th\u003e\n \u003ctd\u003eUp to 300,000 cycles depending on model\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTravel\u003c\/th\u003e\n \u003ctd\u003e0.20 mm to 0.30 mm\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eAvailable with ground pin (G) or no ground pin (NG) options\u003c\/li\u003e\n \u003cli\u003eLead-free compatible versions (LFS for silver plated, LFG for gold plated)\u003c\/li\u003e\n \u003cli\u003eSuitable for applications requiring high durability and tactile feedback\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eSpecifications are subject to change without notice. For specific or custom configurations, please consult the Littelfuse \/ C\u0026amp;K customer service. The datasheet can be downloaded \u003ca href=\"https:\/\/ckswitches.com\/media\/1480\/kmr4.pdf\" target=\"_blank\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eDisclaimer\u003c\/h3\u003e\n\u003cp\u003eThis datasheet does not provide enough information for applications that require a certain level of quality or safety such as automotive, medical systems, or safety equipment. Please contact customer service for the contractual specification package.\u003c\/p\u003e\n\n\u003cp\u003eFor more details, please search the internet for the part number \u003cstrong\u003eY78B44110FP\u003c\/strong\u003e.\u003c\/p\u003e\u003cbr\u003e"}
