6mm Unidirectional Microphone Capsule for Lavalier and Conference Mics

Compact 6×2.7mm design with focused voice pickup—ideal for discreet lavalier and tabletop conference microphone integration.

🚫 Factory direct sales only – no retail.
Minimum order quantities (MOQs) apply.
For audio brands & OEMs
📞 Contact us for orders & inquiries.
🧪 Sample

Free (std. models) + shipping

🧭 Trial Order

From 200 pcs (1st order only)

📦 MOQ

5,000 pcs (mixed models allowed)

  • Model: ECM-B6027UL29-25674
  • Dimensions: 6 × 2.7 mm
  • Directivity: Unidirectional
  • Sensitivity: -29dB±2
  • Impedance: 2.2KΩ
  • S/N Ratio: 65dB
  • Max SPL: 115dB
  • Operating Voltage: 2Vdc
  • Frequency Response: 100Hz~16KHz
RoHS Certification UL Certification
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Technical Specifications

The ECM-B6027UL29-25674 microphone core is engineered for lavalier and conference applications, featuring a unidirectional pickup pattern and a voice-optimized frequency response. It delivers clear, natural speech reproduction with excellent off-axis noise rejection in professional environments. Its compact form factor allows for seamless integration, while stable performance ensures consistent quality in large-volume production.

Standard Test Circuit

Standard Test Circuit

Test Conditions: Load resistor (RL) = 2.2kΩ, Supply voltage (VS) = 2V, Coupling capacitor (C) = 1μF.

Typical Frequency Response

Typical Frequency Response

Frequency response spans from 100Hz to 16kHz, showing a steady rise throughout the range, with a gentle roll-off starting at 10kHz.

Dimensions (Unit: mm)

Appearance Dimension

Diameter: 6mm; Height: 2.7mm. The front features a dustproof mesh, and the back includes a sound inlet.

Packaging Overview

Electret Microphone Capsule Packaging
  • Standard packaging: 100 pcs per small box.
  • 10 small boxes (1,000 pcs) are combined into one medium carton.
  • Several medium cartons are further packed into a large outer carton.
  • Pin-type microphones are protected with foam inside the small box.
  • Other types are packed directly or sealed in anti-static bags.

Reliability Tests

Sampling Process

  1. 1
    Confirm customer requirements:
    Review product application, microphone capsule specifications, usage scenarios, and sound quality needs.
  2. 2
    Recommend and specify:
    Provide recommended microphone capsule models and detailed specifications for customer evaluation.
  3. 3
    Sample provision and testing:
    Deliver microphone samples for customer testing and feedback purposes.
  4. 4
    Optimize and finalize:
    Refine microphone design based on feedback, finalize samples, and proceed to mass production upon quality approval.

Our Certificates

ECMIC Microphone Manufacturer Certificates

Our production meets ISO 9001:2015 and ISO 14001:2015 standards and is tailored for automotive applications under the IATF 16949:2016 standard, ensuring comprehensive quality management. Additionally, our products comply with ROHS, CE, and FCC requirements.

Quality Assurance

Incoming Quality Control

Conducting sampling inspections of incoming materials to ensure compliance with standard requirements.

Process Quality Control

Performing inspection audits to ensure the stability and control of the entire manufacturing process.

Outgoing Quality Control

Conducting pre-shipment inspections to ensure that products meet established quality standards.

Acoustic Laboratory

B&K Audio Analyzer

Testing of background noise, sensitivity, frequency response curve, and directionality indicators.

Imaging Mapping Analyzer

Verification of the impact of different circuits, structural dimensions, materials, and processes on indicators.

XRF Analyzer

Reliability testing at both the new product design stage and the mass production regular stage.

Automatic Workshop

Automatic Workshop

Utilizing fully automated production lines to ensure high efficiency and consistency.

Automatic Workshop

Equipped with state-of-the-art facilities, including a 10,000-level dust-free workshop.

Automatic Workshop

Employing a rigorous 21-step process to guarantee product stability.

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6mm Unidirectional Microphone Capsule for Lavalier and Conference Mics 6mm Unidirectional Microphone Capsule for Lavalier and Conference Mics
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