FPC type Membrane Switch Description:

POLARIS-KEYPAD provides our customers flexible printed circuit board(FPC) type membrane switches. On this kind of product, the PET circuit layer replaced by the FPC. The FPC can be single layer, double sided or multi-layers. But POLARIS-KEYPAD suggests the FPC not over 4 layers. 

On the FPC type membrane switches, we also can solder resistors, capacitors, triodes and other electronic components on it. 

Sometimes the customers couldn't provide the Gerber file for the FPC circuit, then our engineers can help customer to design the Gerber file. 

The FPC circuit also can be assembled under the rubber keypads. If FPC assembled under the rubber keypad, there will be two methods to make the conductive connection. One is by the carbon pills and the other one is by metal domes;

When should we use FPC as membrane switch’s circuit?

Sometimes, the membrane switch size is small, but there are many buttons and LEDs, then by the single PET circuit layer couldn’t place so many components, then can consider to use double sided FPC as the circuit layer. By the way, the FPC circuit cost is higher than PET circuit, but it also has its advantages, for example, the FPC is more stable, tough. Especially when should assemble many LEDs on the circuit, then use FPC, the quality and stability will be much better then PET circuit. Of course, this depends on customer’s requirements and decisions. If the customer no requirements, then we suggest use FPC as circuit only when it couldn’t fulfill customer’s function by PET circuit.

If you have such kind of needs, please feel free to contact us and POLARIS-KEYPAD will be your best partner for these special products!