High-reliability sealed tactile switch for surface-mount applications, IP67 compliant

The B3S is a compact, sealed tactile switch designed for demanding applications that require high contact reliability and protection against environmental contaminants. Its IEC IP67-rated structure (excluding the terminal section) ensures resistance to dust and water, making it suitable for industrial devices, consumer electronics, and equipment exposed to harsh operating conditions.

The series includes versions with or without a ground terminal, standard height options (4.3 mm), and two operating forces:

• – 1.57 N (160 gf) – standard force
• – 2.26 N (230 gf) – high force

B3S switches are also offered in embossed taping for automated surface-mount production lines.

Key features:

• IP67-rated sealed construction; high protection against dust and moisture
• surface-mount terminals enabling high-density PCB layouts
• optional ground terminal for electrostatic protection
• available in embossed tape packaging for automatic mounting
• long mechanical life: up to 500,000 cycles (1.57 N) and 300,000 cycles (2.26 N)
• high shock and vibration resistance

washable after soldering

Electrical and environmental specifications:

• rated load: 1–50 mA, 3–24 VDC
• minimum applicable load: 10 µA at 1 VDC
• contact resistance: ≤100 mΩ
• insulation resistance: ≥100 MΩ (250 VDC)
• dielectric strength: 500 VAC for 1 min
• bounce time: ≤5 ms
• operating temperature: –25°C to +70°C
• operating humidity: 35–85% RH