Membrane key switch (Standard Specification) |
Electronic properties | Working voltage:≤50V(DC) | Working current:≤100mA |
Contact resistance:0.5~10Ω | Insulation resistance:≥100MΩ(100V/DC) |
Substrate pressure resistance:2kV(DC) | Rebound time:≤6ms |
Loop resistance: 50 Ω, 150 Ω, 350 Ω, or determined according to the user's needs. | Insulation ink withstand voltage:100V/DC |
mechanical properties | Reliability service life:>One million times | Closure displacement: 0.1 ~ 0.4mm (tactile type) 0.4 ~ 1.0mm (tactile type) |
Working force: 15 ~ 750g | Migration of conductive silver paste: at 55 ℃, temperature 90%, after 56 hours, it is 10m Ω / 50VDC between two wires |
There is no oxidation and impurity on the silver paste line | The line width of silver paste is greater than or equal to 0.3mm, the minimum interval is 0.3mm, the rough edge of line is less than 1 / 3, and the line gap is less than 1 / 4 |
Pin spacing standard 2.54 2.50 1.27 1.25mm | The bending resistance of outgoing line is 80 times with d = 10 mm steel rod. |
Environmental parameters | Operating temperature:-20℃~+70℃ | Storage temperature: - 40 ℃ ~ + 85 ℃, 95% ± 5% |
Atmospheric pressure:86~106KPa | |
Printing index | The printing size deviation is ± 0.10 mm, the outline side line is not clear, and the weaving error is ± 0.1 mm | The chromatic deviation is ± 0.11mm/100mm, and the silver paste line is completely covered by the insulating ink |
No ink scattered, no incomplete handwriting | The color difference is not more than two levels |
There shall be no crease or paint peeling | The transparent window shall be transparent and clean, with uniform color, without scratches, pinholes and impurities. |