Catalogue - Membrane Switch Specification - Sinodel Electronic

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Metal keyboard, Touch screen, Rubber keypad, Capacitive touch screen,

Text version of the page

Overlay material:


Item	PET	PC	PVC	Silicone
Life-time of bending	very good	good	bad	very good
Corrosion resistance	good	good	very good	good
Wear resistance	very good	very good	bad	good
Insulation	good	normal	very good	very good
Transparence	very good	very good	normal	bad
Temperature level	good	good	normal	good
UV resistance	bad	bad	normal	bad

0 Circuit layer:

There are 2 different material, FPC (Flexible Printed Circuit) and PET membrane circuit. PET membrane circuit is widely used for membrane switches because of its lower cost and good performance. If there are some SMD components and circuit is complex, it is better to select FPC.

Membrane switch standard specification:


	Electrical
	Maximum Circuit Rating	35VDC, 100mA, 1W
	Contact Resistance	10Q~ 500Q
	Insulation Resistance	100MQ at 100VDC 250Rms (50~60Hz per min)
	Dielectric Withstand	100MQ at 100VDC 250Rms (50~60Hz per min)
	Contact Bounce	<5ms
	Mechanical
	Actuation Force	a) Flat type 60 ~ 300g (2 ~ 10oz.) b) Tactile type: 150 ~ 400g (6 ~ 14oz.)
	Switch Stroke	a) Flat type 0.1 ~ 0.5mm b) Tactile type: 0.6 ~ 1.5mm
	Cable pitch	2.54mm, 2.50mm, 1.27mm, 1.25mm
	Tolerance	+/- 0.2mm
	Environment

Membrane Switch Specification - Sinodel Electronic - #1

Metal keyboard, Touch screen, Rubber keypad, Capacitive touch screen,