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C&K COMPONENTS KST221JLFS Long Travel Tact Switch

The KST series long travel tact switch for SMT applications features a rubber actuator and silver contact material for reliable switching performance. With a J terminal configuration and an IP40 sealing rating, this switch is designed for front panels, automotive dashboards, telephone sets, and instrumentation. It supports pick and place manufacturing, operates within -40°C to +85°C (silver) and -40°C to +125°C (gold), and is compatible with lead-free reflow soldering processes. Its durable design ensures long-lasting, dependable operation in various demanding environments.

Authorized Distributors
Source:Newark
Part No:KST221J LFS
Stock:380
Inv Date:06-15-2026
Price: Unit price: $1.73
Buy/RFQ:
Source:DigiKey
Part No:KST221J LFS
Stock:7859
Inv Date:06-15-2026
Price: Unit price: $1.62
Buy/RFQ:
Part No:KST221J LFS
Stock:20639
Inv Date:06-16-2026
Price: Unit price: $1.53
Buy/RFQ:
Part No:KST221JLFS
Stock:39127
Inv Date:06-15-2026
Price: Unit price: $0.6477
Buy/RFQ:
Part No:KST221JLFS
Stock:39127
Inv Date:06-15-2026
Price: Unit price: $0.6477
Buy/RFQ:
Part No:KST221JLFS
Stock:0
Inv Date:06-15-2026
Price: Unit price: $0.755
Buy/RFQ:

C&K COMPONENTS KST221JLFS Long Travel Tact Switch Specifications:

  • FUNCTION: Momentary
  • CONTACT ARRANGEMENT: 1 make contact = SPST N.O.
  • TERMINALS: J BEND OR GULLWING TYPE FOR SMT
  • MAXIMUM APPLIED FORCE: 4 KG (4078GF)
  • OPERATING LIFE: 100,000 operations
  • TRAVEL TO MAKE: 1.3+0.3/-0.2 mm
  • SWITCHING POWER MAX.: 1.0 VA
  • MAXIMUM POWER: 1.0 VA
  • MAXIMUM VOLTAGE: 32 VDC
  • MINIMUM VOLTAGE: 20 MV
  • MAXIMUM CURRENT: 50 MA
  • MINIMUM CURRENT: 1 MA
  • DIELECTRIC STRENGTH: > 250 Vims
  • CONTACT RESISTANCE: < 100 mΩ
  • INSULATION RESISTANCE: > 1 GΩ initially, > 10 MΩ after damp heat
  • OPERATING TEMPERATURE: -40°C to +85°C (Silver), -40°C to +125°C (Gold)
  • STORAGE TEMPERATURE: -40°C to +85°C (Silver), -40°C to +125°C (Gold)
  • COMPATIBLE WITH LEAD-FREE REFLOW SOLDERING
  • PACKAGING: Continuous tape and reels of 1,000 pieces, external diameter 380 mm

Buy the KST Series Long Travel Tact Switch: KST221JLFS

Purchase the KST series long travel tact switch online today to ensure reliable switching performance in SMT applications. This switch features a rubber actuator, silver contact material, and J terminals. It is compatible with pick and place manufacturing and has an IP40 sealing rating, making it suitable for front panels, dashboards, telephone sets, and instrumentation. Designed for durability, it supports lead-free reflow soldering processes and operates reliably over a wide temperature range. Order now for fast delivery and expert support.

Buy KST221JLFS long travel tact switch now and experience reliable performance with IP40 sealing, ideal for front panels, dashboards, and instrumentation.

Frequently Asked Questions

Where can I buy C&K COMPONENTS KST221JLFS?

You can click on the BUY or RFQ button to purchase KST221JLFS from an authorized C&K COMPONENTS distributor.

How do I troubleshoot issues or seek technical support for part KST221JLFS?

You can download the KST221JLFS datasheet or visit the C&K COMPONENTS website for support.

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