button black 4.5x4.5 3pin side press

A compact 4.5 × 4.5 mm side-actuated tactile switch with a black button and 3-pin layout (2 electrical terminals + 1 mechanical anchor). Optimized for board-edge and tight-space operation, it delivers a crisp, stable feel with low bounce. Available in right-angle THT and side-actuated SMT versions, SPST-NO contact, optional gold plating for low noise and extended life. Typical signal rating 12 VDC/50 mA. Multiple actuation forces and actuator heights. Fully RoHS/REACH compliant.

Key Selling Points

• Side-actuated mechanism for edge-of-board use; preserves front-panel space
• Miniature 4.5 × 4.5 mm body; black button with clear tactile feedback and consistent return
• 3-pin design: 2 electrical terminals + 1 mechanical fixing pin for stronger retention
• Low contact resistance and low bounce; optional gold-plated contacts for low-noise and longevity
• Available in right-angle THT and SMT side-act versions; multiple forces and heights
• RoHS/REACH compliant, halogen-free; factory quality and environmental reports available

Applications

• Side keys on portable and wearable devices; board-edge reset/function keys
• Remote controls, digital cameras, voice recorders, MP3/players
• Automotive knobs/handles auxiliary side keys; industrial control panel edge buttons
• Medical handhelds, instruments/meters, security, smart home

Key Specifications

• Dimensions: body approx. 4.5 × 4.5 mm; side actuator protrusion ~1.5–2.0 mm
• Pin count: 3 pins (2 electrical + 1 mechanical anchor)
• Contact configuration: SPST-NO
• Electrical rating: 12 VDC, 50 mA recommended; max 24 VDC, 50 mA (signal use)
• Initial contact resistance: ≤100 mΩ
• Insulation resistance: ≥100 MΩ (at 100 VDC)
• Dielectric strength: 250 VAC, 1 min
• Travel: 0.25 ± 0.1 mm
• Actuation force options: 160 gf / 200 gf / 260 gf
• Rebound/bounce: rebound ≤6 ms, bounce ≤10 ms (typical)
• Mechanical life: 100,000 to 500,000 cycles (force/material dependent)
• Operating temperature: -40 to +85°C
• Protection: standard ~IP40; optional dust membrane available

Materials and Finish

• Housing: LCP/PA66, flame-retardant
• Button: POM/PA (black)
• Contacts: silver alloy or gold-plated (optional)
• Terminals: copper alloy, tin-plated or gold-plated (optional)

Mounting and Soldering Guidelines

• THT right-angle: recommended hole Ø0.9–1.0 mm; leave edge clearance and avoid lateral shear during assembly
• SMT: reflow-capable; peak ≤245°C with moderate ramp; do not press/actuate during reflow
• Wave solder: preheat 120–150°C; peak ≤260°C; total dwell ≤5 s
• Hand solder: 350°C iron, ≤3 s/pin; minimize thermal shock; use non-corrosive cleaning solvents
• PCB recommendations: add locating holes or mechanical reinforcement; board edge clearance ≥0.5 mm; follow the recommended footprint drawing

Reliability and Testing

• Thermal cycling: -40/+85°C, 10 cycles passed (typical)
• Vibration: 10–55 Hz, 1.5 mm amplitude, 2 h per axis
• Shock: 10 G, 6 ms, 6 times per axis
• Salt spray: 48 h (tin-plated terminals); higher corrosion resistance options available
• ESD: system-level protection recommended; tested up to ±8 kV air discharge with suitable panel design

Compliance and Certifications

• RoHS, REACH, halogen-free compliant
• Test methods reference: IEC 60512/61058
• Factory certified to ISO 9001
• UL/CE typically not applicable for low-voltage signal components; third-party testing available upon request

Ordering Information and Customization

• Example part number: TS-4R5-3P-[S/T]-[160/200/260]-BK
  • 4R5: 4.5 × 4.5 mm body
  • 3P: three pins (including mechanical anchor)
  • S/T: SMT or THT
  • 160/200/260: actuation force
  • BK: black button
• Packaging: SMT tape-and-reel; THT bulk or tube
• MOQ and lead time: stock/small-batch support; standard 1–2 weeks; customization 2–4 weeks
• Custom options: force, travel, height (e.g., 3.5–7.0 mm side actuator), terminal plating, contact material, dust membrane, high-temp materials, target life ≥1M cycles, custom appearance/marking

Documentation and Support

• Available: datasheet, 2D drawings, PCB footprint recommendations, 3D STEP, RoHS/REACH reports
• Samples: free/expedited samples; 24–72 h depending on inventory
• Design assistance: PCB layout optimization, tactile feel tuning, dust mitigation solutions

FAQ

• How are the 3 pins defined? Two pins are electrical (NO), one is a mechanical fixing pin; some variants have all three electrical—refer to the datasheet.
• Is it reflow-capable? SMT side-act version supports reflow; THT is recommended for wave or hand solder.
• Risk of accidental actuation? Use panel apertures with stops or select a higher force grade.
• Can it be waterproof? Standard part is non-waterproof; add silicone film/seals for splash resistance.
• Low-noise audio use? Choose gold-plated contacts, smooth spring design, and implement 10–20 ms MCU debouncing.
• Wiring guidance? MCU input current <10 mA; add RC or Schmitt trigger if stronger debounce is required.

Dimensions and PCB Footprint

• Body: approx. 4.5 × 4.5 mm; overall height and pin geometry vary by version
• Example THT pin pitch: ~2.5 mm × 4.0 mm (refer to formal drawings)
• Board edge clearance ≥0.5 mm; route per official footprint

Note
Specifications and dimensions are general. Refer to the specific part-number datasheet for exact values. Contact us for drawings, 3D files, and samples.