Hot-Sale Tact Switch For Smart Thermostat Panels

A compact, low-profile SMD tactile switch engineered for smart thermostat front panels and home HVAC controllers. Delivers crisp, consistent feedback behind glass or plastic overlays, with quiet actuation, long mechanical life, and stable performance across typical residential environments. Ideal for power, mode, and +/- temperature keys, and menu navigation.

Key Features

• Ultra-compact SMD footprint: 3.0 × 2.0 × 1.5 mm
• Momentary SPST-NO circuit with precise tactile click
• Actuation force options: 130 gf (light), 180 gf (standard), 260 gf (firm)
• Short travel for fast response: 0.15 ± 0.05 mm
• Long life up to 300,000 cycles
• Electrical rating: 12 VDC, 50 mA (resistive load)
• Quiet operation suitable for living spaces
• Stable from -40 to +85°C; low contact resistance
• Tape-and-reel for automated SMT assembly; lead-free reflow compatible
• RoHS/REACH compliant; halogen-free

Typical Applications

• Smart thermostat panels and wall-mounted HVAC controllers
• Smart home control pads and room sensors
• Touch-plus-tactile hybrid HMIs under glass or membrane overlays

Electrical & Mechanical Specifications

• Circuit: SPST-NO, top actuation
• Dimensions: 3.0 × 2.0 × 1.5 mm
• Operating force: 130/180/260 gf (±20%)
• Travel: 0.15 mm (±0.05 mm)
• Rating: 12 VDC, 50 mA
• Contact resistance: ≤100 mΩ initial (≤200 mΩ after life)
• Insulation resistance: ≥100 MΩ at 100 VDC
• Dielectric strength: 250 VAC, 1 minute
• Bounce time: ≤10 ms
• Operating temperature: -40 to +85°C
• Storage temperature: -40 to +85°C
• Mechanical life: up to 300,000 actuations

Materials & Plating

• Cover: stainless steel
• Base: high-temperature LCP, UL94 V-0
• Dome/contact: stainless dome, silver alloy with localized gold plating
• Terminals: copper alloy, matte Sn over Ni for solderability

Reliability & Environmental

• Thermal shock: -40/85°C, 10 cycles, pass
• Humidity: 40°C, 95% RH, 96 h, pass
• Vibration: 10–55 Hz, 1.5 mm p‑p, 2 h per axis, pass
• ESD immunity: ±8 kV air, ±6 kV contact (IEC 61000‑4‑2)
• Solderability: ≥95% wetting per J‑STD‑002
• Salt spray: 48 h, terminals maintain solderability

Soldering & Assembly Guidelines

• Mounting: SMD; compatible with lead-free reflow
• Reflow profile: peak 245–255°C, ≤10 s above 230°C; max 2 reflow cycles
• Hand rework: ≤350°C tip, ≤3 s; avoid pressing the actuator during soldering
• Cleaning: avoid ultrasonic cleaning and aggressive solvents
• Recommended pad layout: two pads approx. 0.9 × 1.2 mm with 0.1 mm solder mask clearance (verify per your PCB design)
• Panel interface: use a plunger or emboss aligned to actuator; misalignment ≤0.2 mm; allow 0.1–0.2 mm over‑travel

Design Tips for Thermostat Panels

• Choose 180 gf for general consumer feel; 130 gf for light-touch glass overlays; 260 gf for glove use or outdoor controllers
• Use elastomer or foam plungers to accommodate tolerance stack and reduce click noise
• Maintain spacing from backlight LEDs to limit heat; consider light guide films for uniform illumination
• For hybrid touch designs, place tact switches as tactile backup under capacitive icons

Compliance

• RoHS and REACH compliant; halogen-free; conflict minerals policy available upon request

Packaging & Ordering

• Packaging: 8 mm embossed tape, 4,000 pcs/reel; lot traceability
• Moisture sensitivity level: MSL 1 (not moisture sensitive)
• Part number format: TSW-302015-Txx-Fyy (Txx = top actuation variant; Fyy = 130/180/260 gf)
• Example: TSW-302015-T01-F180

Support & Warranty

• Application engineering support and samples available
• 12-month limited warranty for manufacturing defects