4 x 4 Matrix Keypad

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51.58 51.58 ZAR 60.67 VAT Included

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Component Prototyping

Internal Reference: ACC-005

4 x 4 Matrix Keypad

 

Membrane keypads are an excellent starting point for adding key input to a project because they are inexpensive, long-lasting, and resistant to water. And knowing how to interface them with an Arduino is extremely useful for building a variety of projects that require user input for menu selection, password entry, or robot operation.

Graphic Overlay – Graphic overlays are typically made of polyester because it has better flex life than polycarbonate.

Metal Domes – This layer houses metal domes or polydomes that provide tactile feedback.

Top Circuit Layer – This is typically a polyester printed layer with silver-filled electrically conductive inks. This layer terminates as a flexible tail that connects to the outside world.

Spacer – This layer separates the top and bottom circuits, allowing the switch to remain normally open until the keypad is pressed.

Bottom Circuit Layer – This is typically a polyester printed layer with silver-filled electrically conductive inks. This layer also terminates as a flexible tail.

Rear Adhesive Layer – This layer sticks the keypad to almost anything, which is convenient.

 

Specifications:

  • Contact resistance of 500 (Ω)
  • Insulation resistance 100M (Ω)
  • Key Operating Force 150-200N
  • Rebound time 1 (ms)
  • Life of 100 million (times)
  • Operating Temperature 60 (℃)
  • Circuit Rating: 35V (DC), 100mA, 1W
  • Contact resistance: 10Ω ~ 500Ω
  • Insulation resistance: 100MΩ 100V
  • Dielectric Strength: 250VRms (50 ~ 60Hz 1min)
  • Electric shock jitter: <5ms

Pinout: