Electronic ruler

Service Hotline

Company landline: 86-755-2718 3721

Phone: 86 133-1296-3946 (WeChat also available) – Mr. Tang

Mobile: 86 133-7767-1903 (WeChat also available) — Ms. Zou

Mobile: 86 136 2235 2676 (WeChat also available) – Mr. Chen

Phone: 86 134 2392 7461 (WeChat also available) – Mr. Zhu

WeChat Consultation

Category

Testing, instrumentation, instruments

Product Inquiry

Product Introduction

Thin-film switch
The membrane switch is an integrated operating system that combines keypad functions, indicator elements, and instrument panels into a single unit. It consists of four key components: the panel, the upper circuit, the isolation layer, and the lower circuit. When the membrane switch is pressed, the contact points in the upper circuit deform downward, making contact with the electrode plates in the lower circuit to establish a conductive path. Once the finger is lifted, the upper circuit contacts snap back to their original position, breaking the circuit and triggering a signal. Membrane switches feature a robust design, sleek aesthetics, and excellent sealing properties. They offer outstanding resistance to moisture and boast a long service life. As a result, they are widely used in fields such as electronic communications, precision measurement instruments, industrial control systems, medical devices, the automotive industry, smart toys, and household appliances.

Technical specifications

Electrical performance
⒈ Operating voltage: ≤50V (DC)
⒉ Operating current: ≤100mA
3. Contact resistance: 0.5–10 Ω
⒋ Insulation resistance: ≥100 MΩ (100 V/DC)
⒌ Base material withstand voltage: 2 kV (DC)
⒍ Rebound time: ≤6 ms
7. Circuit Resistance: Three settings available—50Ω, 150Ω, and 350Ω—or can be customized based on user requirements.

⒏ Insulating ink dielectric strength: 100 V/DC
Mechanical Properties
⒈ Reliability and Service Life: Over 1 million cycles

⒉ Closed displacement: 0.1–0.4 mm (non-tactile type), 0.4–1.0 mm (tactile type)
3. Force Range: 15–750 g
⒋Conductive silver paste migration: At 55°C, 90% humidity, after 56 hours, the resistance between the two lines is 10 MΩ/50 V DC.
⒌ Silver paste is free from oxidation and impurities on the production line.
⒍ Silver paste line width ≥ 0.3 mm, minimum spacing 0.3 mm, line burrs < 1/3 of the line width, and line gaps < 1/4 of the line width.
⒎ Pin spacing standards: 2.54 mm, 2.50 mm, 1.27 mm, 1.25 mm, 1.0 mm, 0.5 mm
⒏ The lead wire exhibits excellent bending resistance—when pressed and rolled 80 times with a 10mm steel rod, the wire remains intact.
Environmental Performance
1. Operating temperature: -20°C to +70°C

2. Storage temperature: -40°C to +85°C, with humidity at 95% ±5%.
3. Atmospheric pressure: 86–106 kPa

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