YouMi PET membrane keyboard AND manufacturer of printed circuit board

YouMi PET membrane keyboard AND manufacturer of printed circuit board YouMi PET membrane keyboard AND manufacturer of printed circuit board Standard specifications: Membrane switch technical conditions No JB/T-5405-91 Circuit rating 35V(DC),100mA,1W Loop resistance <200Ω Contact resistance 10~500Ω(According to the trace length and materials to confirm) Insulation resistance 100MΩ, 250V(DC) Medium pressure 250V Rms(50~60Hz 1min) Contact bounce <5m/s Life expectancy Flat type> 5 Million times; Tactile type>1 Million times  Operating pressure Flat type: 57~284g(2~10 Oz); Tactile type>170~397g(6~14 Oz)  Switch stroke Flat type: 0.1~0.5mm; Tactile type: 0.6~1.5mm  Environmental parameters:Operating temperature: -40℃~+80℃Storage temperature: -40℃~+85℃Humidity: 40℃, 90%~95%,240hoursVibration: 20G’ max, (10~200MHz, Mil-STD-202,M204, Condition B)Keypad Button Material: PC or PET (special requirements accepted )Back adhesive: 3M467,3M468 etc.Thickness: 0.8-1 mm