Introducing the LITTELFUSE / C&K COMPONENTS Keylock Switches (Part Number: SERULRDAUOA), designed for high reliability and long service life in various electronic applications. These switches are RoHS compliant and suitable for PCB mounting, offering versatile options for your electronic projects.
Key Features & Benefits
High reliability and extended operational lifespan
Designed for low-level switching applications
Ready for easy implementation on PCB with soldering and centering pins
Available with latching function options
Multiple button styles and LED configurations available
RoHS compliant and environmentally friendly
Technical Specifications
Function: Momentary or push-push
Contact Arrangement: 1 change over contact SPDT, NO
Mode of Switching: Non-shorting
Electrical Ratings: Max switching power 240 mW DC, Max voltage 24 V DC, Max current 10 mA DC
Carrying Current: 100 mA at 20°C (push-push version)
Dielectric Strength: 500 V (50 Hz, 1 min)
Operating Life: ≥ 5 million (momentary), ≥ 500,000 (push-push) operations
Contact Resistance: Initial ≤ 50 mΩ, after life ≥ 100 mΩ
Insulation Resistance: ≥ 10^10 Ω
Capacitance: ≤ 0.8 pF at 10 kHz
Bounce Time: ≤ 2.5 ms
Operating Temperature: -25°C to 85°C
Mechanical & Process Details
Total Travel: ≤ 3 mm
Switching Travel: 1.5 mm
Operating Force: 1.5 ± 0.5 N (150 ± 50 grams)
Mounting: Soldering with centering pins, compatible with lead-free profiles
Physical Dimensions
Horizontal Distance Between Button Centers
12.7 mm (0.500 inches) or 17.78 mm (0.700 inches)
Vertical Distance Between Button Centers
17.78 mm (0.700 inches)
Total Travel
≤ 3 mm
Switching Travel
1.5 mm
Ordering Options & Customization
Our build-a-switch concept allows you to customize your switch by selecting options such as LED color, button color, function (latching or momentary), contact material, and body color. Some configurations may require development or may not be available.
Datasheet & Additional Resources
For detailed specifications and technical drawings, please refer to the datasheet.
Product Metadata
Part Number: SERULRDAUOA
Manufacturer: LITTELFUSE / C&K COMPONENTS
Country of Origin: CN
UOM: EA
ECCN: EAR99
Package Type: Not specified
Note: Datasheet was not processed, please search the internet for the part number for more details.
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These switches are RoHS compliant and suitable for PCB mounting, offering versatile options for your electronic projects.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh reliability and extended operational lifespan\u003c\/li\u003e\n \u003cli\u003eDesigned for low-level switching applications\u003c\/li\u003e\n \u003cli\u003eReady for easy implementation on PCB with soldering and centering pins\u003c\/li\u003e\n \u003cli\u003eAvailable with latching function options\u003c\/li\u003e\n \u003cli\u003eMultiple button styles and LED configurations available\u003c\/li\u003e\n \u003cli\u003eRoHS compliant and environmentally friendly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Momentary or push-push\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eContact Arrangement:\u003c\/strong\u003e 1 change over contact SPDT, NO\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMode of Switching:\u003c\/strong\u003e Non-shorting\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eElectrical Ratings:\u003c\/strong\u003e Max switching power 240 mW DC, Max voltage 24 V DC, Max current 10 mA DC\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCarrying Current:\u003c\/strong\u003e 100 mA at 20°C (push-push version)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDielectric Strength:\u003c\/strong\u003e 500 V (50 Hz, 1 min)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating Life:\u003c\/strong\u003e ≥ 5 million (momentary), ≥ 500,000 (push-push) operations\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eContact Resistance:\u003c\/strong\u003e Initial ≤ 50 mΩ, after life ≥ 100 mΩ\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInsulation Resistance:\u003c\/strong\u003e ≥ 10^10 Ω\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e ≤ 0.8 pF at 10 kHz\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eBounce Time:\u003c\/strong\u003e ≤ 2.5 ms\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -25°C to 85°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMechanical \u0026amp; Process Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eTotal Travel:\u003c\/strong\u003e ≤ 3 mm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSwitching Travel:\u003c\/strong\u003e 1.5 mm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating Force:\u003c\/strong\u003e 1.5 ± 0.5 N (150 ± 50 grams)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Soldering with centering pins, compatible with lead-free profiles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePhysical Dimensions\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eHorizontal Distance Between Button Centers\u003c\/th\u003e\n \u003ctd\u003e12.7 mm (0.500 inches) or 17.78 mm (0.700 inches)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eVertical Distance Between Button Centers\u003c\/th\u003e\n \u003ctd\u003e17.78 mm (0.700 inches)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTotal Travel\u003c\/th\u003e\n \u003ctd\u003e≤ 3 mm\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSwitching Travel\u003c\/th\u003e\n \u003ctd\u003e1.5 mm\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eOrdering Options \u0026amp; Customization\u003c\/h3\u003e\n\u003cp\u003eOur build-a-switch concept allows you to customize your switch by selecting options such as LED color, button color, function (latching or momentary), contact material, and body color. Some configurations may require development or may not be available.\u003c\/p\u003e\n\u003ch3\u003eDatasheet \u0026amp; Additional Resources\u003c\/h3\u003e\n\u003cp\u003eFor detailed specifications and technical drawings, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-ck\/ck-serulrdauoa.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eProduct Metadata\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SERULRDAUOA\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 CN\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUOM:\u003c\/strong\u003e 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 Not specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: Datasheet was not processed, please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-16T06:41:55+05:30","created_at":"2025-08-16T06:41:55+05:30","vendor":"Waldom Electonics","type":"Switches","tags":["IMPORT_CSV","IMPORT_PT2","Keylock","LITTE-CKCO","STD_IMG","Switch","WLDM"],"price":59317,"price_min":59317,"price_max":59317,"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":50626558263613,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"SERULRDAUOA","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SERULRDAUOA","public_title":null,"options":["Default Title"],"price":59317,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"SERULRDAUOA","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_9823bd5b-86c3-4a7a-8373-02054fd5ad25.jpg?v=1755306717"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_9823bd5b-86c3-4a7a-8373-02054fd5ad25.jpg?v=1755306717","options":["Title"],"media":[{"alt":null,"id":45863781925181,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1024,"width":1024,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_9823bd5b-86c3-4a7a-8373-02054fd5ad25.jpg?v=1755306717"},"aspect_ratio":1.0,"height":1024,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/fbe811dc-181f-41c1-ab5a-dc3410446d1d_9823bd5b-86c3-4a7a-8373-02054fd5ad25.jpg?v=1755306717","width":1024}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eProduct Description: Keylock Switches\u003c\/h3\u003e\n\u003cp\u003eIntroducing the LITTELFUSE \/ C\u0026amp;K COMPONENTS Keylock Switches (Part Number: SERULRDAUOA), designed for high reliability and long service life in various electronic applications. These switches are RoHS compliant and suitable for PCB mounting, offering versatile options for your electronic projects.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh reliability and extended operational lifespan\u003c\/li\u003e\n \u003cli\u003eDesigned for low-level switching applications\u003c\/li\u003e\n \u003cli\u003eReady for easy implementation on PCB with soldering and centering pins\u003c\/li\u003e\n \u003cli\u003eAvailable with latching function options\u003c\/li\u003e\n \u003cli\u003eMultiple button styles and LED configurations available\u003c\/li\u003e\n \u003cli\u003eRoHS compliant and environmentally friendly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Momentary or push-push\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eContact Arrangement:\u003c\/strong\u003e 1 change over contact SPDT, NO\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMode of Switching:\u003c\/strong\u003e Non-shorting\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eElectrical Ratings:\u003c\/strong\u003e Max switching power 240 mW DC, Max voltage 24 V DC, Max current 10 mA DC\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCarrying Current:\u003c\/strong\u003e 100 mA at 20°C (push-push version)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDielectric Strength:\u003c\/strong\u003e 500 V (50 Hz, 1 min)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating Life:\u003c\/strong\u003e ≥ 5 million (momentary), ≥ 500,000 (push-push) operations\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eContact Resistance:\u003c\/strong\u003e Initial ≤ 50 mΩ, after life ≥ 100 mΩ\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInsulation Resistance:\u003c\/strong\u003e ≥ 10^10 Ω\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCapacitance:\u003c\/strong\u003e ≤ 0.8 pF at 10 kHz\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eBounce Time:\u003c\/strong\u003e ≤ 2.5 ms\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -25°C to 85°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMechanical \u0026amp; Process Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eTotal Travel:\u003c\/strong\u003e ≤ 3 mm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSwitching Travel:\u003c\/strong\u003e 1.5 mm\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating Force:\u003c\/strong\u003e 1.5 ± 0.5 N (150 ± 50 grams)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Soldering with centering pins, compatible with lead-free profiles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePhysical Dimensions\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eHorizontal Distance Between Button Centers\u003c\/th\u003e\n \u003ctd\u003e12.7 mm (0.500 inches) or 17.78 mm (0.700 inches)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eVertical Distance Between Button Centers\u003c\/th\u003e\n \u003ctd\u003e17.78 mm (0.700 inches)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTotal Travel\u003c\/th\u003e\n \u003ctd\u003e≤ 3 mm\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSwitching Travel\u003c\/th\u003e\n \u003ctd\u003e1.5 mm\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eOrdering Options \u0026amp; Customization\u003c\/h3\u003e\n\u003cp\u003eOur build-a-switch concept allows you to customize your switch by selecting options such as LED color, button color, function (latching or momentary), contact material, and body color. Some configurations may require development or may not be available.\u003c\/p\u003e\n\u003ch3\u003eDatasheet \u0026amp; Additional Resources\u003c\/h3\u003e\n\u003cp\u003eFor detailed specifications and technical drawings, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-ck\/ck-serulrdauoa.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eProduct Metadata\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SERULRDAUOA\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 CN\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUOM:\u003c\/strong\u003e 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 Not specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: Datasheet was not processed, please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e"}
