Silver Flex Circuits

Silver flex membrane switches represent the most popular electronic interface solutions due to their affordability. ThinSilver Flex Circuit flexible layers preserve a low profile without compromising versatility in design options.

Conductive silver inks are screen printed directly onto a flexible film substrate.  This process is more cost-effective than the chemically etched copper, and poses less potential threat to the environment.

Silver flex circuit options include:

  • Single-sided
  • Double-sided (thru-hole)
  • Heat stabilized polyester
  • Embedded SMD (LEDs)
  • Carbon overcoat
  • Printed resistors

Comparison Chart


Silver Ink


Printing vs. Etching

Conductive silver ink traces are screen printed onto the film substrate. 

Copper is chemically etched away, leaving conductive traces.  More expensive than screen-printing.


Silver traces are lightweight and more flexible than solid copper traces.

Solid copper traces are heavier and more durable than softer printed silver traces.


Resistivity approx 50 mOhms/sq
1mm x 80 mm trace = 4 Ohms
0.5mm x 80mm trace = 8 Ohms

Lower electrical resistance and higher conductivity.


Low to Moderate

Expensive to very expensive


No. Components are attached with conductive adhesive.

Ability to solder active and passive components into the switch design.


Minimum of 1.00mm.

Possible pitch 0.5mm and 0.3mm for ZIF connector