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C&K COMPONENTS KMR421GULCLFS Microminiature Tact Switch

The KMR 4 Series microminiature SMT top-actuated tactile switch features a compact design with a small footprint and provides excellent tactile feedback. Engineered for ultra low current capabilities, it supports applications in automotive, industrial electronics, and medical equipment. With a rating of IP40, it offers reliable performance in demanding environments. The switch includes options with different actuation forces, contact materials, and terminal configurations. Its high cycle life and lead-free reflow soldering process ensure durability and ease of manufacturing. Designed for precise electronic control, it is ideal for space-constrained and high-reliability applications.

Authorized Distributors
Source:Newark
Part No:KMR421G ULC LFS
Stock:18886
Inv Date:06-15-2026
Price: Unit price: $0.157
Buy/RFQ:
Source:DigiKey
Part No:KMR421G ULC LFS
Stock:8328
Inv Date:06-15-2026
Price: Unit price: $0.78
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Source:DigiKey
Part No:KMR421GULCLFS
Stock:134600
Inv Date:06-15-2026
Price: Unit price: $0.36
Buy/RFQ:
Part No:KMR421G ULC LFS
Stock:32713
Inv Date:06-16-2026
Price: Unit price: $0.75
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Part No:KMR421GULCLFS
Stock:269200
Inv Date:06-15-2026
Price: Unit price: $0.3376
Buy/RFQ:
Part No:KMR421GULCLFS
Stock:269200
Inv Date:06-15-2026
Price: Unit price: $0.3376
Buy/RFQ:
Part No:KMR421G ULC LFS
Stock:7731
Inv Date:06-16-2026
Price: N/A
Buy/RFQ:

C&K COMPONENTS KMR421GULCLFS Microminiature Tact Switch Specifications:

  • Footprint: Small, suitable for SMT mounting
  • Actuation Forces: 1.2N, 2N, 3N, 4N options
  • Contact Material: Silver, Silver long life, Gold plated in LFG
  • Contact Arrangement: SPST, N.O.
  • Maximum Voltage: 32 VDC
  • Maximum Current: 50 mA
  • Travel: 0.20 mm to 0.30 mm depending on model
  • Bounce Time: <3ms
  • Operational Temperature: -40°C to 85°C, -40°C to 125°C for some variants
  • Storage Temperature: -55°C to 85°C or 125°C
  • Mechanical Life: 100,000 to 400,000 cycles depending on model
  • IP Rating: IP40
  • Dimensions Height: 2.5 mm
  • Package: Reels of 6,000 pieces, external diameter 380 mm + 2 mm
  • Soldering: Lead-free reflow compliant with IEC 61760-1
  • Terminal Type: Gullwing for SMT mounting

Buy the CK Switches KMR421GULCLFS – Reliable Microminiature Tactile Switch for Industrial Applications

Order the CK Switches KMR421GULCLFS online today and benefit from fast delivery and quality assurance. This compact, high-reliability tactile switch is ideal for space-constrained designs in automotive, industrial electronics, and medical equipment. Its excellent tactile feedback and low current capabilities ensure precise control in various applications. Designed for lead-free reflow soldering, it meets industry standards for durability and performance. Enhance your electronic assembly with this durable and easy-to-install switch, ensuring reliability and longevity in your products.

Buy CK Switches KMR421GULCLFS now and experience unmatched reliability, compact size, and high cycle life for your electronic projects.

Frequently Asked Questions

Where can I buy C&K COMPONENTS KMR421GULCLFS?

You can click on the BUY or RFQ button to purchase KMR421GULCLFS from an authorized C&K COMPONENTS distributor.

How do I troubleshoot issues or seek technical support for part KMR421GULCLFS?

You can download the KMR421GULCLFS datasheet or visit the C&K COMPONENTS website for support.

Who is the manufacturer of KMR421GULCLFS?

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