Key module 4 * 4 / 1 * 4 / 3 * 4 / 4 * 5 matrix keyboard single chip microcomputer extended keyboard membrane keyboard
Product parameters
Category
Pet silver paste printing circuit
Circuit class: 35 (DC), 100mA, 1W
Standard square resistance: ? 50mq/ ? /mi1
Electronic characteristics
Contact resistance: 10-5000 (varies with lead length and material)
Absolute green impedance: 100m2100v
Dielectric withstand voltage: 250vrs (50-60hz1min)
Contact jitter time: ? MS
Mechanical properties
Operating pressure: metal shrapnel type 220-350g
Switch stroke: metal sheet type 0.60.8m
Recommended temperature: + 15 ? - 35 ?
Environmental parameters
Storage humidity 7% - 90%
Test temperature: -0 ? - +60 ? 16h
Test humidity: 70%-90%
] : 20G' smsx. (10-200HZ, MIL-STD-202, M204 Condi tion B)
Material properties
Line thickness: ? 0.13M
Service life: piece key type less than 500000 times