Littelfuse K5V4: Reflow-Compatible SPDT Long-Travel Illuminated Tactile Switch

Littelfuse K5V4: Reflow-Compatible SPDT Long-Travel Illuminated Tactile Switch

Littelfuse expands its K5V series with the K5V4 — the first reflow-compatible, long-travel, SPDT illuminated tactile switch designed for modern SMT assembly.

Key features

• Reflow-compatible PAR (polyarylate) material rated to 250°C for direct SMT assembly without sleeving.
• SPDT contact configuration offering both normally open and normally closed options.
• Long-travel tactile action with audible click and 4N actuation force for precise HMI feedback.
• Integrated high-brightness LEDs in multiple colors and bi-color options for clear backlight indication.
• Gold-plated dome contacts for durable long-term contact performance in a compact, dust-resistant package.
• Available SMT (GH) and THT PIP (2.1mm pin) versions; tape-and-reel packaging for OEM production.

Applications & availability

Ideal for data center and server controls, network infrastructure, industrial control panels, and professional AV HMIs where space, reliability, and tactile feedback matter.

K5V4 simplifies manufacturing by enabling a move from wave solder to reflow soldering, reducing cost and improving yield for OEMs and contract manufacturers.

Request samples and datasheets from Littelfuse authorized distributors. Visit Littelfuse.com for distributor listings and ordering information.

CTA: Evaluate the K5V4 tactile switch today to enhance your product's HMI, visual feedback, and manufacturability.