With the introduction of new K5V4 series, Littelfuse announced the growth of its K5V Series illuminated tactile switch family. These include 2.1 mm Pin-in-Paste (PIP) and Gull Wing (GH) versions that work with reflow soldering.
The new K5V4 switches, which are made of high-temperature PAR (polyarylate) material with a thermal deformation threshold of 250°C, are perfect for manufacturers switching from wave to reflow soldering techniques.
For the first time, direct SMT assembly is made possible, removing the need for silicone sleeves or special handling while preserving durability and tactile performance. This lowers manufacturing costs, supports higher throughput, and improves end-product quality.
Key Features and Benefits
- Reflow soldering-compatible via PAR material—no sleeve required
- SPDT contact configuration with normally open and normally closed options
- Sharp tactile response with audible click and 4N operating force
- Integrated high-brightness LEDs in multiple color and bi-color options
- Compact, dust-resistant design for reliable operation in dense boards
- Gold-plated dome contacts for superior long-term contact performance
- Available in SMT (GH) and THT (PIP) versions for design flexibility
Markets & Application
- Data centers and servers: System control and diagnostic interface buttons
- Network infrastructure: Reset and feedback switches for routers and telecom devices
- Industrial equipment: Control panel interfaces, safety reset points, and signal input
- Pro audio/video systems: Tactile response for mixers, switchboards, and low-light interfaces
Littelfuse closes a significant market gap by providing the first long-travel, SPDT, lighted tactile switch in a reflow-capable SMT package. Wave soldering is usually needed for competing solutions, which complicates and raises the cost of the assembly process. The K5V4 Series is a small, sturdy solution that combines excellent ergonomics, visual feedback, and manufacturability.
This growth demonstrates Littelfuse’s dedication to developing tactile switch technology and providing OEMs with high-performance HMI components that are tailored for contemporary production settings.
Leadership Comments
“These new K5V4 series switches are designed to meet the demands of today’s dense electronic systems, where space efficiency, reliability, and user interface feedback are critical,” said Jeremy Hebras, VP, Switches & Sensors Engineering at Littelfuse. “The K5V switch product series has been created to answer unique customer device architectures where the main board and components are positioned at a 90° angle to the front panel. In combination with long travel, sharp tactile feel, and backlighting, the K5V is ideal when accurate device control is needed—especially where unwanted actuation or lack of immediate user feedback is not acceptable.”
Availability
The K5V Tactile Switches are available in tape and reel format, with quantities ranging from 1,000 to 2,000 units. Request samples through any authorized Littelfuse distributor worldwide.
For a listing of Littelfuse distributors, CLICK HERE.
To Know More About K5V Series illuminated Tactile Switch, CLICK HERE
