Mini Electret Condenser Microphone 4.5 x 2.2 mm-High Quality 🎤

The Mini Electret Condenser Microphone is a compact, high‑quality audio pickup ideal for Arduino, Raspberry Pi, and other microcontroller projects. With a footprint of just 4.5 mm × 2.2 mm, it delivers reliable performance across a wide temperature range, making it a versatile choice for electronics components, audio modules, and embedded designs.

Key Features ✨

• Ultra-compact size: 4.5 mm diameter × 2.2 mm height for space-constrained designs
• Omnidirectional polar pattern for consistent sound capture from all directions
• Wide operating voltage range of 1–10 VDC for flexible biasing ⚡
• Low current consumption: ≤ 0.5 mA for battery-powered systems
• High signal-to-noise ratio: ≥ 40 dB for cleaner audio
• Sensitivity: −38 ± 3 dB for clear voice and ambient audio pickup
• Engineered for dependable operation from −25 °C to +70 °C 🌡️

Technical Specifications 📐

• Dimensions: 4.5 mm (diameter) × 2.2 mm (height)
• Operating temperature: −25 °C to +70 °C
• Operating voltage (bias): 1–10 VDC
• Output impedance (max): 2.2 kΩ
• Current consumption (max): 0.5 mA
• Sensitivity: −38 ± 3 dB
• Directivity: Omnidirectional
• Signal-to-noise ratio (min): 40 dB

Typical Applications 🔧

• Voice capture and audio detection in Arduino and Raspberry Pi projects
• Sound level monitoring, IoT nodes, and embedded microcontroller systems
• Wearables, compact recorders, and electronics modules requiring low power

Integration Tips ⚙️

• Bias the microphone using a suitable resistor and DC blocking capacitor for AC output coupling.
• For best results, route the microphone into a preamplifier (e.g., common electret mic preamp modules) before feeding an ADC on a microcontroller or SBC.
• Keep leads short and add local decoupling to minimize noise and preserve the specified SNR.