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Sealed Sub-Miniature Pushbutton Switches 8B Series

SMT

Model:
8B
Brand:
TACLEX

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Product Description

Product Overview

The 8B Series is a sealed sub‑miniature surface‑mount (SMT) pushbutton switch designed for compact electronic devices. Featuring an IP67 waterproof sealed construction and SMT process, the series measures only approximately 8.13 × 6.2 mm, making it one of the smallest sealed pushbutton switches currently available on the market. The 8B Series supports both momentary ON (normally open) and momentary OFF (normally closed) functions, with a current‑carrying capacity of up to 3A @ 120VAC / 28VDC. It is widely used in industrial automation, precision instruments, telecommunications equipment, consumer electronics, medical devices, and other applications.

Technical Parameters

Specification
MAX.CURRENT/VOLTAGE RATING WITH RESISTIVE LOAD	3A with resistant load @120 VAC or 28VDC 1A with resistant load @250 VAC
CONTACT RESISTANCE	20mΩ max. (initial value) @ 2-4VDC 100mA for both silver and gold plated contacts.
DIELECTRIC STRENGTH	1000 Vrms min.@sea level. (initial value)
MECHANICAL LIFE	50,000 make-and-break cycles
OPERATING TEMPERATURE	-30°C to 85°C
INSULATION RESISTANCE	1,000MΩ min./1000VDC

Material
CASE	Glass filled nylon 6/6, flame retardant, heat stabilized ( UL94V-0 )
PLUNGER	Thermoplastic polyester (UL 94V-0), internal o-ring sealed
SWITCH SUPPORT	Brass, tin plated.
CONTACT	Silver or gold plated copper

Key Features

1. Simple & Reliable Switching Functions： Provides both Momentary ON (normally open) and Momentary OFF (normally closed) functions to meet standard application requirements, with clear and positive tactile feedback.

2. Superior Waterproof Performance：The only opening is sealed with a rubber seal, achieving IP67 certification to ensure stable and reliable operation in humid or water‑exposed environments.

3. Flexible SMT Terminal Options：Available with MT terminals (straight SMT type) and standard MZ terminals to accommodate different surface‑mount process requirements.

4. High‑Temperature Materials & High Current Rating：Switch materials are rigorously tested to withstand standard reflow soldering temperatures. The silver‑contact version offers a current rating of up to 3A @ 120VAC or 28VDC, balancing process compatibility with electrical performance.

5. Ultra‑Compact Design：Measures only approximately 8.13 × 6.2 mm, significantly reducing rear‑panel footprint, making it ideal for high‑density mounting and space‑constrained equipment designs.

6. Contact Material Options：Available with silver‑plated contacts (high‑current applications) and gold‑plated contacts (low‑current signal‑level applications), meeting diverse application needs.

performance.

Applications

Industrial Automation & Control Equipment：
PLC control cabinet pushbuttons, sensor trigger switches, industrial handheld devices, robot control panels；

Precision Instruments & Meters：
Test and measurement instrument panels, laboratory equipment controls, analytical instrument operations；

Telecommunications Equipment：
Communication equipment panel pushbuttons, network device controls, base station equipment operations；

Consumer Electronics：
Smartwatch / fitness tracker side buttons, Bluetooth earphone charging case pushbuttons, portable speaker； controls, game controller buttons

Medical Equipment：
Portable medical instruments, diagnostic equipment controls, rehabilitation device operations, endoscope controls；

Transportation Equipment：
In‑vehicle control panels, marine electronics, avionics instrument controls；