Introducing the high-reliability SPDT (Single Pole Double Throw) illuminated pushbutton switch from LITTELFUSE / C&K COMPONENTS, designed for demanding electronic applications. This compact, microminiature switch features a durable construction suitable for medical, instrumentation, industrial electronics, audio electronics, and electrical systems.
Key Features & Benefits
High reliability and long operational life, capable of withstanding over 5 million operations in momentary mode and over 500,000 in push-push mode
Designed for low-level switching with a maximum switching power of 240 mW DC and voltage of 24 V DC
Ready for PCB implementation with soldering terminals and centering pins
Available with optional latching function and multiple button options
RoHS compliant, ensuring environmental safety and compliance
Technical Specifications
Function
Momentary or push-push
Contact Arrangement
1 change over contact SPDT, NO
Mode of Switching
Non-shorting
Contact Resistance
Initial ≤ 50 mΩ; after 5 million operations ≤ 100 mΩ
Insulation Resistance
≥ 10¹⁰ Ω
Dielectric Strength
500 V (50 Hz, 1 min)
Switching Power Max.
240 mW DC
Switching Voltage Max.
24 V DC
Switching Current Max.
10 mA DC
Carrying Current at 20°C
100 mA
Total Travel
≤ 3 mm
Switching Travel
1.5 mm
Operating Force
1.5 ± 0.5 N (150 ± 50 grams)
Operating Temperature
-25°C to 85°C
Mechanical & Process Details
Solderability: Compatible with wave soldering (lead-free profile) and hand soldering at 350°C for 3 seconds
Mounting: Soldering with centering pins
Mechanical travel: ≤ 3 mm; Switching travel: 1.5 mm
Operating speed: 400 mm/sec
Electrical & Environmental
RoHS compliant
Operating temperature range: -25°C to 85°C
Product Details
Part Number: SERLBKYEAUOA
Manufacturer: LITTELFUSE / C&K COMPONENTS
Country of Origin: CN
Unit of Measure: EA
ECCN: EAR99
Package Type: TRAY
Datasheet & Additional Resources
For detailed technical information, please refer to the datasheet.
Note
Datasheet was not processed please search the internet for the part number for more details.
{"id":10028071649597,"title":"SERLBKYEAUOA","handle":"serlbkyeauoa","description":"\u003ch3\u003eProduct Description for LITTELFUSE \/ C\u0026amp;K COMPONENTS Pushbutton Switch SPDT Keyswitch Illuminated Thro\u003c\/h3\u003e\n\n\u003cp\u003eIntroducing the high-reliability SPDT (Single Pole Double Throw) illuminated pushbutton switch from LITTELFUSE \/ C\u0026amp;K COMPONENTS, designed for demanding electronic applications. This compact, microminiature switch features a durable construction suitable for medical, instrumentation, industrial electronics, audio electronics, and electrical systems.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh reliability and long operational life, capable of withstanding over 5 million operations in momentary mode and over 500,000 in push-push mode\u003c\/li\u003e\n \u003cli\u003eDesigned for low-level switching with a maximum switching power of 240 mW DC and voltage of 24 V DC\u003c\/li\u003e\n \u003cli\u003eReady for PCB implementation with soldering terminals and centering pins\u003c\/li\u003e\n \u003cli\u003eAvailable with optional latching function and multiple button options\u003c\/li\u003e\n \u003cli\u003eRoHS compliant, ensuring environmental safety and compliance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\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\u003eContact Resistance\u003c\/th\u003e\n \u003ctd\u003eInitial ≤ 50 mΩ; after 5 million operations ≤ 100 mΩ\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInsulation Resistance\u003c\/th\u003e\n \u003ctd\u003e≥ 10¹⁰ Ω\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eDielectric Strength\u003c\/th\u003e\n \u003ctd\u003e500 V (50 Hz, 1 min)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSwitching Power Max.\u003c\/th\u003e\n \u003ctd\u003e240 mW DC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSwitching Voltage Max.\u003c\/th\u003e\n \u003ctd\u003e24 V DC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSwitching Current Max.\u003c\/th\u003e\n \u003ctd\u003e10 mA DC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCarrying Current at 20°C\u003c\/th\u003e\n \u003ctd\u003e100 mA\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 \u003ctr\u003e\n \u003cth\u003eOperating Force\u003c\/th\u003e\n \u003ctd\u003e1.5 ± 0.5 N (150 ± 50 grams)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating Temperature\u003c\/th\u003e\n \u003ctd\u003e-25°C to 85°C\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMechanical \u0026amp; Process 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\u003eMounting: Soldering with centering pins\u003c\/li\u003e\n \u003cli\u003eMechanical travel: ≤ 3 mm; Switching travel: 1.5 mm\u003c\/li\u003e\n \u003cli\u003eOperating speed: 400 mm\/sec\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Environmental\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eRoHS compliant\u003c\/li\u003e\n \u003cli\u003eOperating temperature range: -25°C to 85°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: SERLBKYEAUOA\u003c\/li\u003e\n \u003cli\u003eManufacturer: LITTELFUSE \/ C\u0026amp;K COMPONENTS\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: CN\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: EA\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003ePackage Type: TRAY\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDatasheet \u0026amp; Additional Resources\u003c\/h3\u003e\n\u003cp\u003eFor detailed technical information, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-ck\/ck-serlbkyeauoa.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eDatasheet was not processed please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-16T06:41:41+05:30","created_at":"2025-08-16T06:41:41+05:30","vendor":"Waldom Electonics","type":"Switches","tags":["IMPORT_CSV","IMPORT_PT2","LITTE-CKCO","Pushbutton","SPDT","Switch","WLDM"],"price":65831,"price_min":65831,"price_max":65831,"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":50626557608253,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"SERLBKYEAUOA","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SERLBKYEAUOA","public_title":null,"options":["Default Title"],"price":65831,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"SERLBKYEAUOA","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/43640103.jpg?v=1755306704"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/43640103.jpg?v=1755306704","options":["Title"],"media":[{"alt":null,"id":45863777599805,"position":1,"preview_image":{"aspect_ratio":1.0,"height":640,"width":640,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/43640103.jpg?v=1755306704"},"aspect_ratio":1.0,"height":640,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/43640103.jpg?v=1755306704","width":640}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eProduct Description for LITTELFUSE \/ C\u0026amp;K COMPONENTS Pushbutton Switch SPDT Keyswitch Illuminated Thro\u003c\/h3\u003e\n\n\u003cp\u003eIntroducing the high-reliability SPDT (Single Pole Double Throw) illuminated pushbutton switch from LITTELFUSE \/ C\u0026amp;K COMPONENTS, designed for demanding electronic applications. This compact, microminiature switch features a durable construction suitable for medical, instrumentation, industrial electronics, audio electronics, and electrical systems.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eHigh reliability and long operational life, capable of withstanding over 5 million operations in momentary mode and over 500,000 in push-push mode\u003c\/li\u003e\n \u003cli\u003eDesigned for low-level switching with a maximum switching power of 240 mW DC and voltage of 24 V DC\u003c\/li\u003e\n \u003cli\u003eReady for PCB implementation with soldering terminals and centering pins\u003c\/li\u003e\n \u003cli\u003eAvailable with optional latching function and multiple button options\u003c\/li\u003e\n \u003cli\u003eRoHS compliant, ensuring environmental safety and compliance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\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\u003eContact Resistance\u003c\/th\u003e\n \u003ctd\u003eInitial ≤ 50 mΩ; after 5 million operations ≤ 100 mΩ\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInsulation Resistance\u003c\/th\u003e\n \u003ctd\u003e≥ 10¹⁰ Ω\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eDielectric Strength\u003c\/th\u003e\n \u003ctd\u003e500 V (50 Hz, 1 min)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSwitching Power Max.\u003c\/th\u003e\n \u003ctd\u003e240 mW DC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSwitching Voltage Max.\u003c\/th\u003e\n \u003ctd\u003e24 V DC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSwitching Current Max.\u003c\/th\u003e\n \u003ctd\u003e10 mA DC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eCarrying Current at 20°C\u003c\/th\u003e\n \u003ctd\u003e100 mA\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 \u003ctr\u003e\n \u003cth\u003eOperating Force\u003c\/th\u003e\n \u003ctd\u003e1.5 ± 0.5 N (150 ± 50 grams)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating Temperature\u003c\/th\u003e\n \u003ctd\u003e-25°C to 85°C\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMechanical \u0026amp; Process 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\u003eMounting: Soldering with centering pins\u003c\/li\u003e\n \u003cli\u003eMechanical travel: ≤ 3 mm; Switching travel: 1.5 mm\u003c\/li\u003e\n \u003cli\u003eOperating speed: 400 mm\/sec\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Environmental\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eRoHS compliant\u003c\/li\u003e\n \u003cli\u003eOperating temperature range: -25°C to 85°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: SERLBKYEAUOA\u003c\/li\u003e\n \u003cli\u003eManufacturer: LITTELFUSE \/ C\u0026amp;K COMPONENTS\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: CN\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: EA\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003ePackage Type: TRAY\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDatasheet \u0026amp; Additional Resources\u003c\/h3\u003e\n\u003cp\u003eFor detailed technical information, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-ck\/ck-serlbkyeauoa.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eDatasheet was not processed please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e"}
