In a silicone rubber keyboard, keys are surrounded by flexible walls that provide tactile feedback when pressed. These walls bend, resembling a spring mechanism, allowing the key’s center to make contact with the circuit upon full depression. Two common switch activation methods are dome switches and conductive carbon pills, the latter typically comprised of silicone infused with carbon. These pellets, available in various shapes and sizes, facilitate circuit closure upon contact with a printed circuit board or flexible circuit. Multiple carbon pellets may be utilized in larger keypads to ensure reliable contact.

Characteristics:

Silicone rubber keypads and keyboards, crafted from elastomeric, translucent silicone rubber via compression molding, serve as dependable and stable switch components across a wide range of electronic devices. Their applications span remote controls, medical instruments, wireless communication equipment, telephones, safes, and electronic calculators, highlighting their versatility and reliability in modern technology.

Applications of Conductive Carbon Pills:

Remote Controls

Conductive carbon pills in silicone rubber keypads ensure long-lasting, responsive buttons for various remote control devices, enhancing user experience and device reliability.

Medical Devices

These keypads offer durable, hygienic, and precise input solutions for medical equipment, ensuring consistent performance and ease of cleaning.

Wireless Communication Equipment

The robust nature of silicone rubber keypads with conductive carbon pills supports the demanding use of wireless communication devices, providing reliable and stable input.

Telephones

In telecommunication devices, these keypads deliver dependable performance with a comfortable tactile feel, crucial for frequent use.

Safes

Silicone rubber keypads with conductive carbon pills enhance the security and durability of electronic safes, ensuring reliable access control.

Electronic Calculators

These keypads provide accurate and long-lasting input for electronic calculators, essential for precise calculations and frequent use.