MS-KP-MU0800
Membrane keyboard
Membrane keyboards are an example of the category of membrane switches. Membrane switches with many buttons and neatly arranged are commonly referred to as membrane keyboards. Membrane keyboard is a kind of keyboard that integrates decoration and functionality, which is popular internationally in recent years. Composed of four parts: panel, upper circuit, isolation layer, and lower circuit
Product description
◆ Beautiful and novel appearance;
◆ Small size, thin thickness, light weight, which is more conducive to the development of notebook computer keyboards to be light, thin, short, small and highly intelligent.
◆ Anti-moisture, dust, oil and harmful gases, strong sealing, acid and alkali resistance and shock resistance.
◆ Long service life and bending resistance.
◆ High cost performance, stable process
Electrical properties
◆ Working voltage: ≤50VDC
◆ Working current: ≤100mA
◆ Contact resistance: 0.5~10Ω
◆ Insulation resistance: ≥100MΩ (100VDC)
◆ Substrate withstand voltage: 2kDVC
◆ Rebound time: ≤6ms
◆ Loop resistance: three gears of 50Ω, 150Ω, 350Ω, or determined by the user's needs.
◆ Insulating ink withstand voltage: 100VDC
Mechanical behavior
◆ Reliability and service life: >1 million times
◆ Closing displacement: 0.1~0.4mm (non-tactile type)
◆ Healthy standard work force: 15~750g force
◆ There is no oxidation and no impurities on the silver paste line.
◆ Silver paste line width ≥ 0.3mm, minimum interval 0.3mm, line burrs <1/3, line gap <1/4 line width.
◆ Lead spacing standard 2.54 2.50 1.27 1.25mm
◆ Lead wire anti-curvature, use d=10mm steel rod to roll the circuit 80 times continuously.
Environmental performance
◆ Working temperature: -20℃～70℃
◆Storage temperature: -40℃～85℃ temperature 95%±5%
◆ Atmospheric pressure: 86～106KPa
Printing index
◆ Printing size deviation ±0.10mm, unclear outline and knitting deviation ±0.1mm
◆ The color deviation is ±0.11mm/100mm, and the insulating ink completely covers the silver paste circuit.
◆ No ink scattered, no handwriting incomplete.
◆ The color difference is not greater than the second level.
◆ There must be no creases or paint peeling.
◆ The transparent window is transparent and clean, with uniform color, free of scratches, pinholes, and impurities.
