Introducing the LITTELFUSE / C&K COMPONENTS CK series Keylock Switches, a high-reliability, microminiature SPDT key switch designed for demanding electronic applications. Manufactured in China (COO: CN), these switches are RoHS compliant and suitable for a variety of industries including medical, instrumentation, industrial electronics, and audio electronics.
Part Number: SERUAUOA Manufacturer: LITTELFUSE / C&K COMPONENTS Country of Origin: CN UOM: EA ECCN: EAR99 Package Type: Not specified Datasheet:Download Datasheet
Key Features & Benefits
High reliability with long operational life
Designed for low-level switching applications
Ready to implement on PCB with soldering and centering pins
Latching function available for secure operation
Multiple button options and LED configurations for customization
RoHS compliant and compatible construction
Technical Specifications
Function
Momentary or push-push
Contact Arrangement
1 change over contact SPDT, NO
Mode of Switching
Non-shorting
Electrical
Switching Power Max.: 240 mW DC
Switching Voltage Max.: 24 V DC
Switching Current Max.: 10 mA DC
Carrying Current at 20°C (push-push): 100 mA
Dielectric Strength (50 Hz, 1 min): 500 V
Operating Life: ≥ 5 x 106 operations (momentary), ≥ 5 x 105 operations (push-push)
Contact Resistance: Initial ≤ 50 mΩ, after 5 x 106 operations ≤ 100 mΩ
Insulation Resistance: ≥ 1010 Ω
Capacitance at 10 kHz: ≤ 0.8 pF
Bounce Time: ≤ 2.5 ms
Mechanical
Total Travel: ≤ 3 mm
Switching Travel: 1.5 mm
Latch Travel: 1.8 mm
Operating Force: 1.5 ± 0.5 N (150 ± 50 grams)
Operating Temperature: -25°C to 85°C
Physical Dimensions
Horizontal Distance Between Button Centers: 12.7 mm (0.500 in) or 17.78 mm (0.700 in)
Vertical Distance Between Button Centers: 17.78 mm (0.700 in)
Dimensions shown in mm; specifications subject to change
Environmental & Mounting Details
Solderability: Compatible with wave soldering (lead-free profile) and hand soldering at 350°C for 3 seconds
Operating Temperature Range: -25°C to 85°C
Mounting: Soldering with centering pins
Additional Options & Customization
The switch features a build-your-own configuration system, allowing you to select options such as LED color (none, red, yellow, green), button color (black, gray, white, red, blue), body color, and function (latching or non-latching). Additional button and LED colors are available upon request.
Note
For detailed configurations and ordering options, please refer to the datasheet linked above. Some configurations may require development or may not be available. For more details, please search the internet for the part number SERUAUOA.
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{"id":10028071682365,"title":"SERUAUOA","handle":"seruauoa","description":"\u003ch3\u003eProduct Description for LITTELFUSE \/ C\u0026amp;K COMPONENTS Keylock Switches Microminiature SPDT\u003c\/h3\u003e\n\u003cp\u003eIntroducing the LITTELFUSE \/ C\u0026amp;K COMPONENTS CK series Keylock Switches, a high-reliability, microminiature SPDT key switch designed for demanding electronic applications. Manufactured in China (COO: CN), these switches are RoHS compliant and suitable for a variety of industries including medical, instrumentation, industrial electronics, and audio electronics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e SERUAUOA\u003cbr\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e LITTELFUSE \/ C\u0026amp;K COMPONENTS\u003cbr\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e CN\u003cbr\u003e\n\u003cstrong\u003eUOM:\u003c\/strong\u003e EA\u003cbr\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003cbr\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Not specified\u003cbr\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.ckswitches.com\/media\/1335\/digitast.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh reliability with long operational life\u003c\/li\u003e\n \u003cli\u003eDesigned for low-level switching applications\u003c\/li\u003e\n \u003cli\u003eReady to implement on PCB with soldering and centering pins\u003c\/li\u003e\n \u003cli\u003eLatching function available for secure operation\u003c\/li\u003e\n \u003cli\u003eMultiple button options and LED configurations for customization\u003c\/li\u003e\n \u003cli\u003eRoHS compliant and compatible construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eFunction\u003c\/th\u003e\n \u003ctd\u003eMomentary or push-push\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eContact Arrangement\u003c\/th\u003e\n \u003ctd\u003e1 change over contact SPDT, NO\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMode of Switching\u003c\/th\u003e\n \u003ctd\u003eNon-shorting\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eElectrical\u003c\/th\u003e\n \u003ctd\u003e\n \u003cul\u003e\n \u003cli\u003eSwitching Power Max.: 240 mW DC\u003c\/li\u003e\n \u003cli\u003eSwitching Voltage Max.: 24 V DC\u003c\/li\u003e\n \u003cli\u003eSwitching Current Max.: 10 mA DC\u003c\/li\u003e\n \u003cli\u003eCarrying Current at 20°C (push-push): 100 mA\u003c\/li\u003e\n \u003cli\u003eDielectric Strength (50 Hz, 1 min): 500 V\u003c\/li\u003e\n \u003cli\u003eOperating Life: ≥ 5 x 10\u003csup\u003e6\u003c\/sup\u003e operations (momentary), ≥ 5 x 10\u003csup\u003e5\u003c\/sup\u003e operations (push-push)\u003c\/li\u003e\n \u003cli\u003eContact Resistance: Initial ≤ 50 mΩ, after 5 x 10\u003csup\u003e6\u003c\/sup\u003e operations ≤ 100 mΩ\u003c\/li\u003e\n \u003cli\u003eInsulation Resistance: ≥ 10\u003csup\u003e10\u003c\/sup\u003e Ω\u003c\/li\u003e\n \u003cli\u003eCapacitance at 10 kHz: ≤ 0.8 pF\u003c\/li\u003e\n \u003cli\u003eBounce Time: ≤ 2.5 ms\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMechanical\u003c\/th\u003e\n \u003ctd\u003e\n \u003cul\u003e\n \u003cli\u003eTotal Travel: ≤ 3 mm\u003c\/li\u003e\n \u003cli\u003eSwitching Travel: 1.5 mm\u003c\/li\u003e\n \u003cli\u003eLatch Travel: 1.8 mm\u003c\/li\u003e\n \u003cli\u003eOperating Force: 1.5 ± 0.5 N (150 ± 50 grams)\u003c\/li\u003e\n \u003cli\u003eOperating Temperature: -25°C to 85°C\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePhysical Dimensions\u003c\/th\u003e\n \u003ctd\u003e\n \u003cul\u003e\n \u003cli\u003eHorizontal Distance Between Button Centers: 12.7 mm (0.500 in) or 17.78 mm (0.700 in)\u003c\/li\u003e\n \u003cli\u003eVertical Distance Between Button Centers: 17.78 mm (0.700 in)\u003c\/li\u003e\n \u003cli\u003eDimensions shown in mm; specifications subject to change\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eEnvironmental \u0026amp; Mounting Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eSolderability: Compatible with wave soldering (lead-free profile) and hand soldering at 350°C for 3 seconds\u003c\/li\u003e\n \u003cli\u003eOperating Temperature Range: -25°C to 85°C\u003c\/li\u003e\n \u003cli\u003eMounting: Soldering with centering pins\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Options \u0026amp; Customization\u003c\/h3\u003e\n\u003cp\u003eThe switch features a build-your-own configuration system, allowing you to select options such as LED color (none, red, yellow, green), button color (black, gray, white, red, blue), body color, and function (latching or non-latching). Additional button and LED colors are available upon request.\u003c\/p\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eFor detailed configurations and ordering options, please refer to the datasheet linked above. Some configurations may require development or may not be available. For more details, please search the internet for the part number \u003cstrong\u003eSERUAUOA\u003c\/strong\u003e.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-16T06:41:43+05:30","created_at":"2025-08-16T06:41:43+05:30","vendor":"Waldom Electonics","type":"Switches","tags":["IMPORT_CSV","IMPORT_PT2","Keylock","LITTE-CKCO","SPDT","Switch","WLDM"],"price":41439,"price_min":41439,"price_max":41439,"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":50626557641021,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"SERUAUOA","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SERUAUOA","public_title":null,"options":["Default Title"],"price":41439,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"SERUAUOA","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/SERUAUOA_11124563_60f246f1.jpg?v=1755306707"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/SERUAUOA_11124563_60f246f1.jpg?v=1755306707","options":["Title"],"media":[{"alt":null,"id":45863777894717,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/SERUAUOA_11124563_60f246f1.jpg?v=1755306707"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/SERUAUOA_11124563_60f246f1.jpg?v=1755306707","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eProduct Description for LITTELFUSE \/ C\u0026amp;K COMPONENTS Keylock Switches Microminiature SPDT\u003c\/h3\u003e\n\u003cp\u003eIntroducing the LITTELFUSE \/ C\u0026amp;K COMPONENTS CK series Keylock Switches, a high-reliability, microminiature SPDT key switch designed for demanding electronic applications. Manufactured in China (COO: CN), these switches are RoHS compliant and suitable for a variety of industries including medical, instrumentation, industrial electronics, and audio electronics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e SERUAUOA\u003cbr\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e LITTELFUSE \/ C\u0026amp;K COMPONENTS\u003cbr\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e CN\u003cbr\u003e\n\u003cstrong\u003eUOM:\u003c\/strong\u003e EA\u003cbr\u003e\n\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003cbr\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e Not specified\u003cbr\u003e\n\u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.ckswitches.com\/media\/1335\/digitast.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh reliability with long operational life\u003c\/li\u003e\n \u003cli\u003eDesigned for low-level switching applications\u003c\/li\u003e\n \u003cli\u003eReady to implement on PCB with soldering and centering pins\u003c\/li\u003e\n \u003cli\u003eLatching function available for secure operation\u003c\/li\u003e\n \u003cli\u003eMultiple button options and LED configurations for customization\u003c\/li\u003e\n \u003cli\u003eRoHS compliant and compatible construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n \u003ctr\u003e\n \u003cth\u003eFunction\u003c\/th\u003e\n \u003ctd\u003eMomentary or push-push\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eContact Arrangement\u003c\/th\u003e\n \u003ctd\u003e1 change over contact SPDT, NO\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMode of Switching\u003c\/th\u003e\n \u003ctd\u003eNon-shorting\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eElectrical\u003c\/th\u003e\n \u003ctd\u003e\n \u003cul\u003e\n \u003cli\u003eSwitching Power Max.: 240 mW DC\u003c\/li\u003e\n \u003cli\u003eSwitching Voltage Max.: 24 V DC\u003c\/li\u003e\n \u003cli\u003eSwitching Current Max.: 10 mA DC\u003c\/li\u003e\n \u003cli\u003eCarrying Current at 20°C (push-push): 100 mA\u003c\/li\u003e\n \u003cli\u003eDielectric Strength (50 Hz, 1 min): 500 V\u003c\/li\u003e\n \u003cli\u003eOperating Life: ≥ 5 x 10\u003csup\u003e6\u003c\/sup\u003e operations (momentary), ≥ 5 x 10\u003csup\u003e5\u003c\/sup\u003e operations (push-push)\u003c\/li\u003e\n \u003cli\u003eContact Resistance: Initial ≤ 50 mΩ, after 5 x 10\u003csup\u003e6\u003c\/sup\u003e operations ≤ 100 mΩ\u003c\/li\u003e\n \u003cli\u003eInsulation Resistance: ≥ 10\u003csup\u003e10\u003c\/sup\u003e Ω\u003c\/li\u003e\n \u003cli\u003eCapacitance at 10 kHz: ≤ 0.8 pF\u003c\/li\u003e\n \u003cli\u003eBounce Time: ≤ 2.5 ms\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMechanical\u003c\/th\u003e\n \u003ctd\u003e\n \u003cul\u003e\n \u003cli\u003eTotal Travel: ≤ 3 mm\u003c\/li\u003e\n \u003cli\u003eSwitching Travel: 1.5 mm\u003c\/li\u003e\n \u003cli\u003eLatch Travel: 1.8 mm\u003c\/li\u003e\n \u003cli\u003eOperating Force: 1.5 ± 0.5 N (150 ± 50 grams)\u003c\/li\u003e\n \u003cli\u003eOperating Temperature: -25°C to 85°C\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePhysical Dimensions\u003c\/th\u003e\n \u003ctd\u003e\n \u003cul\u003e\n \u003cli\u003eHorizontal Distance Between Button Centers: 12.7 mm (0.500 in) or 17.78 mm (0.700 in)\u003c\/li\u003e\n \u003cli\u003eVertical Distance Between Button Centers: 17.78 mm (0.700 in)\u003c\/li\u003e\n \u003cli\u003eDimensions shown in mm; specifications subject to change\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eEnvironmental \u0026amp; Mounting Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eSolderability: Compatible with wave soldering (lead-free profile) and hand soldering at 350°C for 3 seconds\u003c\/li\u003e\n \u003cli\u003eOperating Temperature Range: -25°C to 85°C\u003c\/li\u003e\n \u003cli\u003eMounting: Soldering with centering pins\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Options \u0026amp; Customization\u003c\/h3\u003e\n\u003cp\u003eThe switch features a build-your-own configuration system, allowing you to select options such as LED color (none, red, yellow, green), button color (black, gray, white, red, blue), body color, and function (latching or non-latching). Additional button and LED colors are available upon request.\u003c\/p\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eFor detailed configurations and ordering options, please refer to the datasheet linked above. Some configurations may require development or may not be available. For more details, please search the internet for the part number \u003cstrong\u003eSERUAUOA\u003c\/strong\u003e.\u003c\/p\u003e\u003cbr\u003e"}
