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
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Matrix Layout: 12-key configuration arranged in 3 columns and 4 rows.
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Ultra-Thin & Flexible: Lightweight, low-profile design that seamlessly blends into enclosures.
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Easy Mounting: Built-in self-adhesive backing ensures effortless installation.
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Solderless Connection: Terminated with a standard 7-pin female DuPont header (2.54mm / 0.1″ pitch).
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High Durability: Sealed membrane design provides excellent resistance against water splashes, dust, and general wear.
Technical Specifications
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Key Configuration: 0–9, *, #
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Connector Type: 7-pin female header
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Pin Pitch: 2.54 mm (0.1″)
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Maximum Rating: 24V DC, 30mA
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Insulation Resistance: 100M Ω, 100V
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Dielectric Withstand: 250V Rms (50-60Hz, 1 min)
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Contact Bounce: ≤ 5ms
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Lifespan: Over 1 million closures per key
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Operating Temperature: 0°C to +50°C
Applications
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Arduino, Raspberry Pi, and DIY microcontroller projects.
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Access control systems, electronic locks, and security keypads.
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Data entry interfaces for industrial machinery or custom automation setups.
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