CK KSR221GLFS Tactile Switch - Sub Min Tact SMT Switch
Introducing the CK KSR221GLFS, a high-quality tactile switch manufactured by Littelfuse / C&K COMPONENTS. Designed for precision and reliability, this subminiature SMT tactile switch is ideal for industrial, medical, and automotive applications requiring emergency stop functionality. The switch features a rubber actuator and is RoHS compliant, ensuring environmental safety and compatibility.
Detect type available for enhanced safety applications
Rubber actuator for durability and tactile feedback
RoHS compliant and environmentally friendly
Suitable for industrial electronics, smart meters, transportation, and medical equipment
IP50 sealed for protection against dust and moisture
Electrical & Mechanical Specifications:
Part Number
Operating Force (N)
Operating Life (operations)
Travel (mm)
KSR211G LFS / KSR213G LFG
1.5 to 1.85 (185) to 2.2
100,000
0.25 ± 0.15
KSR221G LFS / KSR223G LFG
1.9 to 2.25 (225) to 2.6
100,000
0.3 ± 0.15
KSR231G LFS / KSR233G LFG
2.25 to 3.00 (300) to 3.75
100,000
0.35 ± 0.15
KSR251G LFS / KSR253G LFG
3.4 to 4.50 (450) to 5.6
100,000
0.5 ± 0.15
KSR214G LFG
1.5 to 1.85 (185) to 2.2
200,000
0.25 ± 0.15
KSR224G LFG
1.9 to 2.25 (225) to 2.6
200,000
0.3 ± 0.15
KSR234G LFG
2.25 to 3.00 (300) to 3.75
200,000
0.35 ± 0.15
KSR254G LFG
3.4 to 4.50 (450) to 5.6
200,000
0.5 ± 0.15
Environmental Characteristics:
Operating Temperature
Silver
Gold
-40˚C to 85˚C
-40˚C to 125˚C
-40˚C to 125˚C
Storage Temperature
Silver
Gold
-55˚C to 85˚C
-55˚C to 125˚C
-55˚C to 125˚C
For more detailed specifications, please refer to the datasheet.
Note: This product is RoHS compliant and suitable for industrial electronics, medical equipment, and transportation applications. For custom options or specific requirements, contact your Littelfuse / C&K representative.
Disclaimer: Specifications are subject to change without notice. Please evaluate the product for your specific application.
{"id":10027687641405,"title":"KSR221GLFS","handle":"ksr221glfs","description":"\u003ch3\u003eCK KSR221GLFS Tactile Switch - Sub Min Tact SMT Switch\u003c\/h3\u003e\n\u003cp\u003eIntroducing the CK KSR221GLFS, a high-quality tactile switch manufactured by Littelfuse \/ C\u0026amp;K COMPONENTS. Designed for precision and reliability, this subminiature SMT tactile switch is ideal for industrial, medical, and automotive applications requiring emergency stop functionality. The switch features a rubber actuator and is RoHS compliant, ensuring environmental safety and compatibility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e KSR221GLFS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Littelfuse \/ C\u0026amp;K COMPONENTS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e France (FR)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e Each (EA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Reel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/ckswitches.com\/media\/1466\/ksr.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures \u0026amp; Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDetect type available for enhanced safety applications\u003c\/li\u003e\n\u003cli\u003eRubber actuator for durability and tactile feedback\u003c\/li\u003e\n\u003cli\u003eRoHS compliant and environmentally friendly\u003c\/li\u003e\n\u003cli\u003eSuitable for industrial electronics, smart meters, transportation, and medical equipment\u003c\/li\u003e\n\u003cli\u003eIP50 sealed for protection against dust and moisture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical \u0026amp; Mechanical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eOperating Force (N)\u003c\/th\u003e\n\u003cth\u003eOperating Life (operations)\u003c\/th\u003e\n\u003cth\u003eTravel (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR211G LFS \/ KSR213G LFG\u003c\/td\u003e\n\u003ctd\u003e1.5 to 1.85 (185) to 2.2\u003c\/td\u003e\n\u003ctd\u003e100,000\u003c\/td\u003e\n\u003ctd\u003e0.25 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR221G LFS \/ KSR223G LFG\u003c\/td\u003e\n\u003ctd\u003e1.9 to 2.25 (225) to 2.6\u003c\/td\u003e\n\u003ctd\u003e100,000\u003c\/td\u003e\n\u003ctd\u003e0.3 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR231G LFS \/ KSR233G LFG\u003c\/td\u003e\n\u003ctd\u003e2.25 to 3.00 (300) to 3.75\u003c\/td\u003e\n\u003ctd\u003e100,000\u003c\/td\u003e\n\u003ctd\u003e0.35 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR251G LFS \/ KSR253G LFG\u003c\/td\u003e\n\u003ctd\u003e3.4 to 4.50 (450) to 5.6\u003c\/td\u003e\n\u003ctd\u003e100,000\u003c\/td\u003e\n\u003ctd\u003e0.5 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR214G LFG\u003c\/td\u003e\n\u003ctd\u003e1.5 to 1.85 (185) to 2.2\u003c\/td\u003e\n\u003ctd\u003e200,000\u003c\/td\u003e\n\u003ctd\u003e0.25 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR224G LFG\u003c\/td\u003e\n\u003ctd\u003e1.9 to 2.25 (225) to 2.6\u003c\/td\u003e\n\u003ctd\u003e200,000\u003c\/td\u003e\n\u003ctd\u003e0.3 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR234G LFG\u003c\/td\u003e\n\u003ctd\u003e2.25 to 3.00 (300) to 3.75\u003c\/td\u003e\n\u003ctd\u003e200,000\u003c\/td\u003e\n\u003ctd\u003e0.35 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR254G LFG\u003c\/td\u003e\n\u003ctd\u003e3.4 to 4.50 (450) to 5.6\u003c\/td\u003e\n\u003ctd\u003e200,000\u003c\/td\u003e\n\u003ctd\u003e0.5 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eEnvironmental Characteristics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003cth\u003eSilver\u003c\/th\u003e\n\u003cth\u003eGold\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-40˚C to 85˚C\u003c\/td\u003e\n\u003ctd\u003e-40˚C to 125˚C\u003c\/td\u003e\n\u003ctd\u003e-40˚C to 125˚C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage Temperature\u003c\/th\u003e\n\u003cth\u003eSilver\u003c\/th\u003e\n\u003cth\u003eGold\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-55˚C to 85˚C\u003c\/td\u003e\n\u003ctd\u003e-55˚C to 125˚C\u003c\/td\u003e\n\u003ctd\u003e-55˚C to 125˚C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor more detailed specifications, please refer to the \u003ca href=\"https:\/\/ckswitches.com\/media\/1466\/ksr.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This product is RoHS compliant and suitable for industrial electronics, medical equipment, and transportation applications. For custom options or specific requirements, contact your Littelfuse \/ C\u0026amp;K representative.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eDisclaimer: Specifications are subject to change without notice. Please evaluate the product for your specific application.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-16T01:57:19+05:30","created_at":"2025-08-16T01:57:19+05:30","vendor":"Waldom Electonics","type":"Switches","tags":["IMPORT_CSV","IMPORT_PT2","LITTE-CKCO","SMT","Switch","Tactile","WLDM"],"price":5405,"price_min":5405,"price_max":5405,"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":50625781694781,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"KSR221GLFS","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"KSR221GLFS","public_title":null,"options":["Default Title"],"price":5405,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"KSR221GLFS","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/11120696.png?v=1755289642"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11120696.png?v=1755289642","options":["Title"],"media":[{"alt":null,"id":45859746971965,"position":1,"preview_image":{"aspect_ratio":1.0,"height":400,"width":400,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11120696.png?v=1755289642"},"aspect_ratio":1.0,"height":400,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11120696.png?v=1755289642","width":400}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eCK KSR221GLFS Tactile Switch - Sub Min Tact SMT Switch\u003c\/h3\u003e\n\u003cp\u003eIntroducing the CK KSR221GLFS, a high-quality tactile switch manufactured by Littelfuse \/ C\u0026amp;K COMPONENTS. Designed for precision and reliability, this subminiature SMT tactile switch is ideal for industrial, medical, and automotive applications requiring emergency stop functionality. The switch features a rubber actuator and is RoHS compliant, ensuring environmental safety and compatibility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e KSR221GLFS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Littelfuse \/ C\u0026amp;K COMPONENTS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e France (FR)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure:\u003c\/strong\u003e Each (EA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Reel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/ckswitches.com\/media\/1466\/ksr.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures \u0026amp; Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDetect type available for enhanced safety applications\u003c\/li\u003e\n\u003cli\u003eRubber actuator for durability and tactile feedback\u003c\/li\u003e\n\u003cli\u003eRoHS compliant and environmentally friendly\u003c\/li\u003e\n\u003cli\u003eSuitable for industrial electronics, smart meters, transportation, and medical equipment\u003c\/li\u003e\n\u003cli\u003eIP50 sealed for protection against dust and moisture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical \u0026amp; Mechanical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eOperating Force (N)\u003c\/th\u003e\n\u003cth\u003eOperating Life (operations)\u003c\/th\u003e\n\u003cth\u003eTravel (mm)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR211G LFS \/ KSR213G LFG\u003c\/td\u003e\n\u003ctd\u003e1.5 to 1.85 (185) to 2.2\u003c\/td\u003e\n\u003ctd\u003e100,000\u003c\/td\u003e\n\u003ctd\u003e0.25 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR221G LFS \/ KSR223G LFG\u003c\/td\u003e\n\u003ctd\u003e1.9 to 2.25 (225) to 2.6\u003c\/td\u003e\n\u003ctd\u003e100,000\u003c\/td\u003e\n\u003ctd\u003e0.3 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR231G LFS \/ KSR233G LFG\u003c\/td\u003e\n\u003ctd\u003e2.25 to 3.00 (300) to 3.75\u003c\/td\u003e\n\u003ctd\u003e100,000\u003c\/td\u003e\n\u003ctd\u003e0.35 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR251G LFS \/ KSR253G LFG\u003c\/td\u003e\n\u003ctd\u003e3.4 to 4.50 (450) to 5.6\u003c\/td\u003e\n\u003ctd\u003e100,000\u003c\/td\u003e\n\u003ctd\u003e0.5 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR214G LFG\u003c\/td\u003e\n\u003ctd\u003e1.5 to 1.85 (185) to 2.2\u003c\/td\u003e\n\u003ctd\u003e200,000\u003c\/td\u003e\n\u003ctd\u003e0.25 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR224G LFG\u003c\/td\u003e\n\u003ctd\u003e1.9 to 2.25 (225) to 2.6\u003c\/td\u003e\n\u003ctd\u003e200,000\u003c\/td\u003e\n\u003ctd\u003e0.3 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR234G LFG\u003c\/td\u003e\n\u003ctd\u003e2.25 to 3.00 (300) to 3.75\u003c\/td\u003e\n\u003ctd\u003e200,000\u003c\/td\u003e\n\u003ctd\u003e0.35 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKSR254G LFG\u003c\/td\u003e\n\u003ctd\u003e3.4 to 4.50 (450) to 5.6\u003c\/td\u003e\n\u003ctd\u003e200,000\u003c\/td\u003e\n\u003ctd\u003e0.5 ± 0.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eEnvironmental Characteristics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003cth\u003eSilver\u003c\/th\u003e\n\u003cth\u003eGold\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-40˚C to 85˚C\u003c\/td\u003e\n\u003ctd\u003e-40˚C to 125˚C\u003c\/td\u003e\n\u003ctd\u003e-40˚C to 125˚C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage Temperature\u003c\/th\u003e\n\u003cth\u003eSilver\u003c\/th\u003e\n\u003cth\u003eGold\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-55˚C to 85˚C\u003c\/td\u003e\n\u003ctd\u003e-55˚C to 125˚C\u003c\/td\u003e\n\u003ctd\u003e-55˚C to 125˚C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor more detailed specifications, please refer to the \u003ca href=\"https:\/\/ckswitches.com\/media\/1466\/ksr.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This product is RoHS compliant and suitable for industrial electronics, medical equipment, and transportation applications. For custom options or specific requirements, contact your Littelfuse \/ C\u0026amp;K representative.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eDisclaimer: Specifications are subject to change without notice. Please evaluate the product for your specific application.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e"}
