(1) Electrical performance
1. Working voltage: ≤50VDC
2. Working current: ≤100mA
3. Contact resistance: 0.5~10Ω
4. Insulation resistance: ≥100MΩ (100VDC)
5. Substrate withstand voltage: 2kDVC
6. Rebound time: ≤6ms
7. Loop resistance: three gears of 50Ω, 150Ω, 350Ω, or determined by the user's needs
8. Withstand voltage of insulating ink: 100VDC
(2) Mechanical properties
1. Reliability and service life: ＞1 million times
2. Closing displacement: 0.1~0.4mm (non-tactile type) 0.4~1.0mm
3. Strength of health standard: 15~750g
4. Silver paste migration: At 55℃, temperature 90%, after 56 hours, 10MΩ/50VDC between the second lines
5. No oxidation and no impurities on the silver paste line
6. Silver paste line width ≥ 0.3mm, minimum interval 0.3mm, line burrs <1/3, line gap <1/4 line width
7. Standard pin spacing 2.54 2.50 1.27 1.25mm
8. Lead wire anti-curvature, use d=10mm steel rod to roll the circuit continuously for 80 times.
(3) Environmental performance
1. Working temperature: -20℃～＋70℃
2. Storage temperature: -40℃～＋85℃ temperature 95%±5%
3. Atmospheric pressure: 86～106kDa
(4) Printing index
1. The printing size deviation is ±0.15mm, and the outline edge is unclear and the knitting difference is ≤0.1mm
2. The color deviation is ±0.11mm/100mm, and the insulating ink covers all the silver paste circuits
3. No ink scattered, no incomplete handwriting
4. The color difference is not greater than the second level
5. There must be no creases or peeling paint
6. The transparent window is transparent and clean, with uniform color and no scratches, impurities.
