1 2 3 4 12 16 20 Key Button Membrane Switch 1x4 3x4 4x4 4x5 Keys Matrix Array Keyboard Keypad Control Panel DIY Kit For Arduino

1 2 3 4 12 16 20 Key Button Membrane Switch 1×4 3×4 4×4 4×5 Keys Matrix Array Keyboard Keypad Control Panel DIY Kit For Arduino

Product Description:

(1) Electrical properties

1. Working voltage: ≤ 50VDC
2. Working current: ≤ 100mA
3. Contact resistance: 0.5 ~ 10 Ω
4. Insulation resistance: ≥ 100m Ω (100VDC)
5. Substrate withstand voltage: 2kdvc
6. Rebound time: ≤ 6ms
7. Loop resistance: 50 Ω, 150 Ω, 350 Ω, or as required by the user
8. Insulation ink withstand voltage: 100VDC

(2) Mechanical properties

1. Reliability service life: ＞ 1 million times
2. Closing displacement: 0.1-0.4mm (non tactile type) 0.4-1.0mm
3. Standard working force: 15-750g
4. Silver slurry migration: 10M Ω / 50VDC between the two lines after 56 hours at 55 ℃, 90% temperature
5. There is no oxidation and impurity on the silver paste line
6. Silver paste line width ≥ 0.3mm, minimum interval 0.3mm, line burr < 1 / 3, line gap < 1 / 4 line width
7. Pin spacing standard 2.54 2.50 1.27 1.25mm
8. The curvature resistance of outgoing line is continuously rolled 80 times with d = 10 mm steel bar.

(3) Environmental performance

1. Working temperature: – 20 ℃ ~ + 70 ℃
2. Storage temperature: – 40 ℃ ~ + 85 ℃ 95% ± 5%
3. Atmospheric pressure: 86 ～ 106kda

(4) Printing index

1. Printing size deviation is ± 0.15mm, the shape edge line is unclear, and the deviation is ≤ 0.1mm
2. The chromatic deviation is ± 0.11mm/100mm, and the insulating ink is completely covered with silver paste line
3. No ink, no incomplete handwriting
4. Color difference is not greater than level II
5. No crease or paint peeling
6. The transparent window shall be transparent and clean, with uniform color, without scratches, impurities.