As a hybrid switch construction providing tactile response through a custom embossed overlay, Poly-Tac II is cost-effective in applications with highly populated key arrays or in smaller keypads with significant volume requirements. The overlay design permits key centers and key spacing to be closer together, which eliminates the need for dome spacers and dome landing pads in the switch layout.

Poly-Tac II is ideally suited for Memtron customers implementing either polyester membrane or printed circuit board backed switches.

Attributes

• Cost effective alternative to traditional stainless steel dome technology
• Typical actuation forces are 15 +/- 3 ounces
• 1,000,000 actuation life expectancy
• Highly effective in applications with dense key populations
• Can incorporate non-tactile hidden keys
• Operating temperature range of –20 to +50 C and storage temperature range of –40 to +75 C
• Conducive to adding embedded LEDs
• Easily incorporates ESD, RFI, EMI shielding without additional material layers
• Integration into both flex circuit and PCB constructions
• Suitable for polyester overlays
• Optional single layer tail accommodates ZIF or friction-fit connectors in addition to conventional connectors