Microphone Inserts

Microphone Inserts

Sensors
MIC480
Part.No: 594-066
€1.75
In Stock
Immediate Dispatch
MPN 594-066 Omni-directional Electret Condenser Microphone Insert, 10mm diameter, 1.5–10V supply, 50 Hz–13 kHz frequency response. Compact, solderable capsule for DIY audio projects. RoHS compliant.

 

The 594-066 Electret Condenser Microphone Insert (OEM) is a compact, omni-directional capsule designed for embedding into custom audio circuits, sensor modules, and voice-detection projects. It captures sound equally from all directions (360°), operates from a wide 1.5–10V supply, and fits boards or enclosures thanks to its standard 10 mm × 7 mm form factor. RoHS compliant, it is a go-to choice for makers and engineers who need a reliable raw microphone element to solder directly onto a PCB or into a housing.

Key Features

  • Omni-directional polar pattern: picks up sound from all angles → ideal for voice detection and ambient sound sensing
  • Wide supply range 1.5–10V: works with a broad range of circuits, from battery-powered gadgets to 5V microcontroller boards
  • Low current drain <0.5 mA: negligible power consumption → suitable for battery-operated or always-on IoT devices
  • Frequency response 50 Hz–13 kHz: covers the full human speech band and beyond → clear voice and sound capture
  • Impedance 300 Ω: standard electret output impedance, compatible with typical preamp input stages
  • Maximum SPL 120 dB: handles loud environments without clipping
  • Compact 10 mm × 7 mm form factor: easy to fit into tight enclosures or custom PCB footprints
  • RoHS compliant: meets EU environmental regulations

Pinout & Wiring

TerminalSymbolDescription
+VCC / DrainConnect to positive supply (1.5–10V) through a bias resistor (typically 2.2 kΩ–10 kΩ)
−GND / SourceConnect to circuit ground; also the capsule body/case

Wiring note: The microphone insert has two solder pads on its base — the pad connected to the metal case is GND, the other is the signal/VCC drain. A bias resistor between VCC and the drain pad is required; the audio signal is taken from the drain pad via a coupling capacitor. The capsule ships without cables and must be soldered.

Compatibility

  • Arduino UNO/Nano (5V): fully compatible — supply the capsule from the 5V rail through a bias resistor and feed the signal into an analog input or a dedicated amplifier module (e.g. KY-038)
  • ESP32 / ESP8266 (3.3V): compatible — use the 3.3V rail with an appropriate bias resistor; add a preamp stage for best results on ADC inputs
  • Raspberry Pi (3.3V): compatible as a raw capsule; requires an external ADC or audio HAT for digital capture
  • Standalone circuits: works with any preamp or op-amp stage designed for electret capsules (e.g. LM386, MAX9814)

Typical Applications

  • Voice-activated projects: clap switches, sound-triggered relays, or wake-word detection with a microcontroller
  • DIY intercom & walkie-talkie circuits: raw capsule replacement or custom audio input stage
  • Noise level monitoring: measure ambient SPL in smart home or industrial IoT nodes
  • Custom microphone modules: build your own breakout board with amplification and filtering tailored to your project
  • Audio recording add-ons: embedded microphone in enclosures, musical instruments, or field recorders

Technical Specifications

ParameterValue
TypeElectret Condenser (Omni-directional)
Supply Voltage1.5 – 10 V
Current Drain< 0.5 mA
Frequency Response50 Hz – 13 kHz
Impedance300 Ω
Maximum Input SPL120 dB
Diameter10 mm
Height7 mm
RoHSCompliant
MPN594-066

FAQ

Q: Does the microphone insert come with cables or a connector?
A: No — it is a bare capsule with two solder pads on the base. You need to solder wires or mount it directly on a PCB.

Q: Do I need an amplifier to use this with an Arduino?
A: Yes, in most cases. The raw signal from an electret capsule is very small. A preamp stage (discrete transistor, LM386, or a ready-made module like the KY-038) is recommended before connecting to a microcontroller ADC.

Package contents: 1 × Electret Condenser Microphone Insert (594-066)

⚠ Note: This is a raw microphone capsule — no cables, no PCB, no connector included. Soldering required. A bias resistor and coupling capacitor are needed for correct operation.
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