New 3 x 4 12 Key Matrix Membrane Switch Keypad Keyboard

Description

3×4 Matrix Membrane Keypad (12-Key)

This ultra-thin 3×4 Matrix Membrane Keypad is a reliable and space-saving solution for adding user input to your electronics projects. Featuring 12 tactile keys arranged in a classic telephone-style matrix (0-9, *, and #), it easily interfaces with microcontrollers like Arduino, Raspberry Pi, PIC, and AVR.

The keypad comes equipped with a flexible ribbon cable and a pre-attached female header connector for quick, solderless breadboard or PCB integration. Thanks to its self-adhesive backing, it can be securely mounted to almost any flat surface or project enclosure.

Key Features

• Matrix Layout: 12-key configuration arranged in 3 columns and 4 rows.

• Ultra-Thin & Flexible: Lightweight, low-profile design that seamlessly blends into enclosures.

• Easy Mounting: Built-in self-adhesive backing ensures effortless installation.

• Solderless Connection: Terminated with a standard 7-pin female DuPont header (2.54mm / 0.1″ pitch).

• High Durability: Sealed membrane design provides excellent resistance against water splashes, dust, and general wear.

Technical Specifications

• Key Configuration: 0–9, *, #

• Connector Type: 7-pin female header

• Pin Pitch: 2.54 mm (0.1″)

• Maximum Rating: 24V DC, 30mA

• Insulation Resistance: 100M Ω, 100V

• Dielectric Withstand: 250V Rms (50-60Hz, 1 min)

• Contact Bounce: ≤ 5ms

• Lifespan: Over 1 million closures per key

• Operating Temperature: 0°C to +50°C

Applications

• Arduino, Raspberry Pi, and DIY microcontroller projects.

• Access control systems, electronic locks, and security keypads.

• Data entry interfaces for industrial machinery or custom automation setups.