JESSINIE 5Pcs 4x5 Matrix Array Membrane Switch 20 Key Keypad Membrane Switch 85*75mm Microcontroller Extended Keyboard 9Pin for Arduino

Category: PET silver paste printing circuit Circuit level: 35V (DC), 100mA, 1W Standard square resistance: ? 50mQ Contact resistance: 10-500Q (varies with lead length and material) Insulation impedance: 100MQ 100V Dielectric withstand voltage: 250VRms (50-60Hz1min) Contact jitter time: ? 5ms Operating pressure: Metal shrapnel type 220-350g Switch stroke: metal spring type 0.6-0.8mm Storage temperature:+15°C-35°C Storage humidity: 70% -90% Test temperature: 0°C -+60°C 16H Test humidity: 70%-90% Vibration: 20G's msx (10-200HZ, MIL-STD -202, M204, Condition B) Line thickness: ? 0.13MM Service life: Film button type less than 500000 times