Long-Travel Tactile Switch 4x5 For Keyboard Input Devices

A compact 4×5 mm SMT long‑travel tactile switch engineered for keyboard input devices. Delivers a smooth, quiet keystroke with extended travel for improved ergonomics and typing accuracy, while maintaining tight force consistency and long service life. Ideal for notebook keyboards, numeric pads, handheld remotes, and low‑profile macro keys.

Key Features

• Long travel: 0.9–1.6 mm for comfortable, fatigue‑free typing
• Low‑noise, smooth tactile feel with a clean actuation point
• Consistent force tolerance for uniform key response across the matrix
• Compact 4×5 mm footprint; low‑profile body heights available
• High durability: up to 5 million cycles (application dependent)
• SMT gull‑wing terminals, tape‑and‑reel, reflow‑safe (JEDEC profile)
• Optional dust cover and reinforced plunger for keycap stability
• RoHS/REACH compliant materials

Applications

• Laptop and ultra‑thin keyboards
• Gaming keypads and macro keys
• Industrial HMI panels and numeric input
• Remote controllers, media keys, portable instruments
• Wearables and compact handhelds requiring quiet tactile input

Technical Specifications

• Dimensions: 4 × 5 mm body footprint; heights 2.0–5.0 mm (options)
• Travel: 0.9–1.6 mm; tactile drop 10–25% of peak force
• Actuation force options: 120/160/200/260/320 gf (custom on request)
• Electrical rating: 12 VDC, 50 mA (logic level)
• Contact resistance: ≤100 mΩ (initial)
• Insulation resistance: ≥100 MΩ at 100 VDC
• Dielectric strength: 250 VAC, 1 min
• Bounce time: ≤5 ms
• Life: 1–5 million actuations depending on force/travel and use case
• Operating temperature: −40 to +85 °C
• Storage temperature: −40 to +85 °C
• ESD robustness: up to 8 kV air discharge (system dependent)
• Environmental: RoHS/REACH compliant
• Packaging: tape & reel, 2,000–3,000 pcs/reel (height dependent)

Materials & Finish

• Plunger/stem: POM or PA66 (low friction, wear‑resistant)
• Top cover: SUS304 stainless steel
• Base: LCP, UL94 V‑0
• Dome spring: stainless steel
• Terminals: copper alloy, Sn or Ag plating; Au flash optional
• Optional dust membrane: silicone

Assembly & Handling

• Mounting: SMT reflow; follow JEDEC J‑STD‑020 reflow profile
• Recommended peak reflow: ≤260 °C; ≤3 passes
• PCB layout: provided land pattern for 4×5 mm body; keepout for plunger travel
• Cleaning: no ultrasonic cleaning; avoid flux ingress
• Keycap integration: use flat adapter or molded cap; limit side load and off‑axis actuation
• Storage: keep sealed; ≤30 °C and ≤60% RH to preserve solderability

Reliability & Testing

• Cycle endurance validated under IEC‑style duty; report available
• Force consistency and tactile curve tested across batches
• Salt spray, thermal shock, and vibration tests available on request
• Optional pre‑aging and 100% outgoing tactile inspection for premium lots

Customization & Options

• Force tuning: 100–400 gf in 20–40 gf steps
• Travel profile: standard long‑travel or softer pre‑travel
• Height: multiple actuator heights for low‑profile keyboards
• Sound profile: low‑noise dome variants for office/gaming
• Plating: silver, matte tin, or gold flash for high‑reliability contacts
• Dust protection: optional membrane or semi‑sealed cover
• Marking: custom lot/date codes for traceability
• Documentation: PCB land pattern, 2D drawing, STEP/IGES 3D files

Ordering Information

• Base part code: LTS‑4x5‑LT‑[Force]‑[Height]‑[Plating]
• Example: LTS‑4x5‑LT‑200gf‑3.0H‑Ag
• Samples: 5–20 pcs standard; ships with PCB pad drawing and reflow guide
• Lead time: 2–4 weeks standard; expedited options available
• MOQ: prototyping friendly; production MOQ per variant provided upon request

Documentation & Support

• Datasheet, recommended PCB lands, reflow profile
• STEP/IGES 3D models for enclosure/keycap design
• Evaluation boards for keyboard matrix testing
• Application notes on low‑noise keystroke tuning

FAQ

• Is it suitable for laptop keyboards? Yes, the 4×5 mm long‑travel design targets low‑profile laptop and compact keyboards with quiet operation.
• Can I tune force and travel? Yes, both actuation force and travel profile can be customized within stated ranges.
• What about reflow soldering? The switch is reflow‑safe under JEDEC profiles; avoid exceeding 260 °C peak and limit to three passes.
• Do you offer samples and 3D files? Yes, samples, PCB land patterns, and STEP/IGES models are available.
• Is it sealed? Standard versions are non‑sealed (IP40). Optional dust membranes improve resistance to debris for keyboard environments.
• How long is the lifetime? Typical 1–5 million cycles depending on force, travel, and keycap mechanics; contact us with your duty cycle for a tailored estimate.